ELHADI Kenane

MOKRANI Meriem , BAOUCHE Marwa

Conception et analyse d’une antenne tag RFID pour les applications UHF

Radjaa NOUIBAT

Conception et analyse d’antennes à résonateur diélectrique pour les applications sans fil

Rezgui yamina nour elhouda

Cell planning and optimization for 4G and 5G mobile networks

HADJI Abdallah , & HABACI Imadeddine

Etude et conception d’une antenne MIMO avec des structures EBG pour les applications mobiles modernes

BENKHALED Asma

Evaluation and optimization of cellular mobile networks in M’sila city

Abir DAIRA , Fadwa BENMEBAREK

Analysis of Some CFAR Processors for High-Resolution Radar Systems

benadel sawsen , Benchebha yasmine

Planification et optimisation d’un réseau mobile dans la wilaya de Msila.

Djaidjaa Tariq

Etude et conception d’un diviseur de Gysel Reconfigurable pour les applications mobiles

Bachiri Rachid

Conception d’un filtre reconfigurable pour les applications de la 5eme génération

Boukherouba Saada , Mebarki Samia

Optimisation d'un modèle de propagation approprié pour la communication mobile

Bouafia Hanane , Ouali Karima

STUDY AND DESIGN OF A RECONFIGURABLE ANTENNA WITH EBG STRUCTURE

Boudraa Aymen , Bouhali Rabah

Etude et conception d’un diviseur de puissance reconfigurable pour les applications mobiles

Kawkech Madjd , Saadallah Ali

STUDY AND DESIGN OF A RECONFIGURABLE ANTENNA USING DEFECTIVE GROUND STRUCTURE FOR MOBILE COMMUNICATION

Roumir Imane

Synthèse d’un réseau d’antennes adaptatif pour une topologie circulaire

Mohamed chikouche Ikram , Guagui Imane

Etude et conception d’une lentille planaire de Rotman pour les réseaux mobiles

Abdelhadi, TITTAFI , Saïd, MOULAY

Etude et conception d’un diviseur de puissance bi-bande à quatre ports 

CHAIMA, Amel

Etude et conception d’une antenne reconfigurable pour les applications WLAN

Hemza, BACHIR , Hicham, BENRABEH

Conception d’une antenne multi-bandes pour les terminaux mobile LTE

Fatima Zahra, FEGRICHE , Houssem eddine, LEBOUKH

Etude Etude et simulation d’un contrôleur de puissance dans la troisième génération du réseau mobile.

Rachid, BACHIR

Etude des performances de la méthode BCO sur la réponse d’un réseau d’antennes adaptatif dans un environnement dynamique

Yacine, HADLI

LA CONCEPTION D’UNE ANTENNE PATCH POUR LES APPLICATIONS MOBILE LTE

oualid, bouslah

Estimation de la direction d’arrivé par une méthode à haute résolution pour un réseau d’antennes

Atika, TALEB HACINE

Etude et conception d’un réseau d’antennes à pointage en utilisant les réseaux de neurones apprenti par IWO

HELMI, SHAMSAN

L’optimisation d’un coupleur directionnel par l ’ADS Momentum

KHALED, LOGRAB

une nouvelle conception de la matrice de Butler en utilisant la taille optimisée du coupleur branch-line

DERRAR, FARES

La synthèse d’un réseau d’antennes linéaire par la méthode des mauvaises herbes

MARROK, Adel

LA CONCEPTION D’UNE ANTENNE PATCH POUR LES SYSTEMES DE TROISIEME GENERATION PAR L’ANSOFT HFSS

ROUIBEH, badreddine

Etude et simulation de la technique d’alimentation d’un réseau micro-ruban

Nowadays, Electrocardiogram (ECG) diagnosis stills to be very useful to inform about the cardiac health status of humans. However, acquiring an ECG signal in a correct manner requires that all noise sources should be reduced proficiently. Among such noise types, we attract the attention to the baseline wander (BW) that can be instigated, usually, by unreliable electrode contact placement, patient breathing, unclean skin and so on. In this context, three strategies dedicated to diminish BW contribution that are: Discrete Wavelet Transform (DWT), Discrete Cosine Transform (DCT), Fast Walsh-Hadamard Transform (FWHT) based algorithms, were experimented comparatively. Achieved simulations demonstrate, qualitatively and quantitatively, the high-performance capacity of the DWTbased strategy compared to the DCT-based technique and FWHT-based method.

Citation

ELhadi KENANE , Zaki Aissam Khezzar, Redha Benzid, ,(2025-12-10), Transform-based algorithms dedicated to ECG baseline drift cancellation: A comparative study,2nd International Conference of Advanced Technology in Electronic and Electrical Engineering (ICATEEE2025)),University of Msila

This paper presents a novel design of a Wilkinson power divider for dual-band operation. In the proposed design, the conventional two quarter-wavelength transmission lines are replaced with two stubs connected by a single coupled line. Additionally, an isolation resistor is connected between the two output ports. Using even-odd mode analysis and the ABCD matrix method, the design equations for the proposed circuit are derived. The divider is fabricated on an FR-4 substrate with a dielectric constant of 4.3 and a thickness of 0.8 mm. Simulation results show that the divider achieves good performance at both design frequencies, 0.85 GHz and 2.3 GHz, with low return loss at all ports (Sn1, S22, and S33), good transmission coefficients (S21 and S3), and high isolation (S23) between the two output ports

Citation

ELhadi KENANE , Messaoud GARAH , Amal SILA , Bureau de la stratégie de numérisation , ,(2025-11-02), A Novel Design of a Wilkinson Power Divider for Dual-Band Operation,2025 ieee international multi conference on smart systems & green process 2025,Hammamat-Tunisia

Reconfigurable antennas are suitable for modern wireless andportable devices, as they can operate across multiplefrequency bands and aajust radiation patterns based on user requirements. This paper introduces a simple frequeny reconfigurable antenna. By employing frequeny reconfigurability, a single antenna can accommodate various «pplications by switching between dyferent bands. To enable this functionality, PIN diodes are used strategically placing these diodes within the antenna structure allowsfor the adjustment of the resonancefrequency with minimalpower consumption. The suggested antenna canfunction in two dijferentfrequency bands, depending on the PJN diode's switching state. It operates at 5.2GHz and 2.7 GHz duringforward bias fthe diode, 2.4 GHz and 2.5 GHz during reverse bias f the diode. The antenna (41x44x1.6 mm3) is designed on FR4 substrate with permittivity .f4.3 andtangentiallossf0.02 usingthe CSTMicrowave studio simulator. The resulting antenna is suitablefor 5G applications.

Citation

ELhadi KENANE , Rima SEGHIOUR , Ali KHALFA , Rania GUERNINE , ,(2025-07-05), Design of a Frequency-Reconfigurable Antenna for 5G Applications,1st National Conference on Renewable Energies and Advanced Electrical Engineering (NC-REAEE'25),University of Msila

In this paper, a high isolation GYSEL power divider (GPD) with fixed characteristic impedance is proposed. It was designed using electromagnetic simulators and then implemented for the low band of 5G applications, covering 2.3GHz. The proposed GPD consists of three transmission line sections with fixed characteristic impedances and two isolation resistors to dissipate power. The proposed design was printed on a Rogers's RO4003C substrate with a dielectric constant of 3.55 and a thickness of 0.813mm. To validate the performance of the GPD, simulation results are presented in terms of return losses (Si1, S22), transmission coefficient (S31), and isolation loss (S3). The simulation results show that good matching, good transmission coefficient and high isolation between the two output ports at the operating frequency band

Citation

ELhadi KENANE , Amal SILA , Messaoud GARAH , Rania GUERNINE , Rima SEGHIOUR , ,(2025-05-07), High Isolation GYSEL Power Divider with fixed characteristic Impedance,1st National Conference on Renewable Energies and Advanced Electrical Engineering (NC-REAEE'25),University of Msila

In this paper, a high isolation GYSEL power divider (GPD) with fixed characteristic impedance is proposed. It was designed using electromagnetic simulators and then implemented for the low band of 5G applications, covering 2.3GHz. The proposed GPD consists of three transmission line sections with fixed characteristic impedances and two isolation resistors to dissipate power. The proposed design was printed on a Rogers's RO4003C substrate with a dielectric constant of 3.55 and a thickness of 0.813mm. To validate the performance of the GPD, simulation results are presented in terms of return losses (Si1, S22), transmission coefficient (S31), and isolation loss (S3). The simulation results show that good matching, good transmission coefficient and high isolation between the two output ports at the operating frequency band

Citation

Amal SILA , Messaoud GARAH , ELhadi KENANE , Rania GUERNINE , Rima SEGHIOUR , ,(2025-05-07), High Isolation GYSEL Power Divider with fixed characteristic Impedance,1st National Conference on Renewable Energies and Advanced Electrical Engineering (NC-REAEE'25),University of Msila

Reconfigurable antennas are suitable for modern wireless andportable devices, as they can operate across multiplefrequency bands and aajust radiation patterns based on user requirements. This paper introduces a simple frequeny reconfigurable antenna. By employing frequeny reconfigurability, a single antenna can accommodate various «pplications by switching between dyferent bands. To enable this functionality, PIN diodes are used strategically placing these diodes within the antenna structure allowsfor the adjustment of the resonancefrequency with minimalpower consumption. The suggested antenna canfunction in two dijferentfrequency bands, depending on the PJN diode's switching state. It operates at 5.2GHz and 2.7 GHz duringforward bias fthe diode, 2.4 GHz and 2.5 GHz during reverse bias f the diode. The antenna (41x44x1.6 mm3) is designed on FR4 substrate with permittivity .f4.3 andtangentiallossf0.02 usingthe CSTMicrowave studio simulator. The resulting antenna is suitablefor 5G applications.

Citation

Rima SEGHIOUR , ELhadi KENANE , Ali KHALFA , Rania GUERNINE , Amal SILA , ,(2025-05-07), Design of a Frequency-Reconfigurable Antenna for 5G Applications,1st National Conference on Renewable Energies and Advanced Electrical Engineering (NC-REAEE'25),University of Msila

This paper presents a design and simulation of a novel wideband Vivaldi antenna, which is obtained using exponential curves to achieve optimal performance across multiple frequencies. The proposed antenna operates at four frequency bands 1.14 GHz, 2.84 GHz, 3.5 GHz, and 5 GHz, which makes it suitable for a wide range of 5G applications. The tapered slot Vivaldi antenna, with compact dimensions of 49 × 48.4 × 1.6 mm3, integrates a 3 mm microstrip feed and is designed on an FR4 substrate, which has a dielectric constant of 4.4 with a tangent loss of 0.02. To enhance operational efficiency of our Vivaldi antenna, a circular cut has been introduced in the ground plane, which improving significantly the antenna's radiation characteristics and impedance matching. The design was carried out and analyzed using CST studio simulator. The simulation results indicate a significant improvement in the performance across various stages of the design process. This iterative design process underscores the adaptability of the antenna for a wide frequency band, including 5G bands. Due to its compact size, wideband capabilities, and improved gain and directivity, our proposed enhanced Vivaldi antenna demonstrates considerable promise for integration into modern communication systems, particularly in 5G applications, where wide bandwidth and multi-frequency operations are very important.

Citation

Rima SEGHIOUR , ELhadi KENANE , Ali KHALFA , Rania GUERNINE , Amal SILA , ,(2024-12-17), Analysis and Design of Wideband Vivaldi Antenna for 5G Applications,1st International Conference on Electrical, Computer, Telecommunication and Energy Technologies (ECTE-Tech),Oum El Bouaghi, Algeria

This work presents a simple stacked rectangular dielectric resonator antenna (RDRA), which is dedicated for ISM band applications. To design this RDRA antenna, an EM simulator has been used. The proposed structure consists of a dielectric resonator, which is mounted on plastic substrate. This resonator is fed using a simple aperture-coupled feed line over a rectangular feeding slot made on a copper ground plane. The substrate has a relative permittivity 𝜀𝜀𝑟𝑟 of 2.65 and tan 𝛿𝛿 0.025. The proposed antenna has a compact size of 49.5x49.5x1.6𝑚𝑚𝑚𝑚3. The physical dimensions of the dielectric resonator are 30mm, 30mm, and 35mm for the length, width, and height, respectively. The dielectric resonator of the pro posed stacked RDRA has two layers. The first layer is constructed using plastic dielectric, which is used for the construction of our substrate. However, the sec ond layer is fabricated using FR-4, which has a relative permittivity 𝜀𝜀𝑟𝑟 of 4.4 and tan 𝛿𝛿 0.025. Due to the using of the second layer in our proposed stacked RDRA, an enhancement in the gain has been obtained, with a peak gain up to 5 dB and an efficiency up to 95% over the desired ISM band. In Addition, the obtained radiation pattern presents high stability over the operating frequency band.

Citation

Rania GUERNINE , ELhadi KENANE , Mohamed SAHED , Amal SILA , Rima SEGHIOUR , ,(2024-11-20), Tunable DRA with parasitic elements for ISM band applications,6th International Conference on Electrical engineering and control applications,Khenchela, Algeria.

Power dividers, including rat-race divider, play a crucial role in wireless communication systems. The rat-race divider has been known in microwave engineering for many decades, which is used in numerous applications such as Mixers, power dividers/combiners, phase shifters, and baluns. To use this rat-race coupler as a power divider, an input signal is applied at one port, the outputs at two other ports are equal in magnitude, but 180 degrees out of phase. This work presents a parametric study of a conventional rat-race coupler, which is intended for 5G lower band applications, using the CST simulator. The parametric study aims to demonstrate the impact of certain parameters such as physical dimensions and electrical properties on the characteristics of our designed rat-race in terms of bandwidth, power ratio, and isolation. The proposed structure of standard rat-race power divider with its four ports operates at the frequency of 3.5 GHz.

Citation

Amal SILA , Messaoud GARAH , ELhadi KENANE , ,(2024-10-31), Design and Parametric Analysis of a Rat-Race Power Divider for 5G Applications,2024 IEEE International Multi-Conference on Smart System & Green Process,Djerba, Tunisia

A power divider is a critical passive device, which is commonly used in microwave systems. This microwave component splits the input power, evenly or unevenly, into several smaller output powers. In this paper, we present a design of a coupled-line Wilkinson power divider (WPD) for UMTS mobiles applications. This divider consist two (λ/4) transmission lines and an isolation resistor R, which is connected between output ports. The main disadvantage of this structure is large size and narrow band, especially at lower frequencies. The proposed design composed a signal coupled line to replace the two (λ/4) transmission lines in conventional WPD and one isolation resistor R. The use of a coupled line, in our WPD, offers many advantages compared to the standard WPD including compact size, wide bandwidth, low profile and high isolation. The design was printed on a Rogers RO4003C with an ɛᵣ=3.55 and a thickness of 0.813 mm. Simulations results indicate that the proposed WPD presents low return losses in all ports and high isolation between output ports over the third-generation mobile band.

Citation

Amal SILA , Messaoud GARAH , ELhadi KENANE , Rania GUERNINE , Rima SEGHIOUR , ,(2024-10-01), Design of Coupled-Line Wilkinson Power Divider for UMTS mobile applications,2024 International Conference on Advances in Electrical and Communication Technologies (ICAECOT),Setif, Algeria

This paper introduces a design of CPW-fed Fshaped textile wearable antenna with miniaturized structure, designed to operate at 2.45 GHz for medical applications. The antenna substrate is constructed from jeans material, while the radiating element is comprised of a copper tape. The design is simple, compact and easy to manufacture with only fabric material. Using CST Microwave Studio, the antenna’s behavior has been evaluated, and stable performance has been achieved. The proposed antenna shows promising results, which are compared with similar work.

Citation

ELhadi KENANE , Chahrazad Bensid, ,(2024-10-01), Miniaturized CPW-fed F-Shaped Textile Jeans Antenna Wearable for Medical Applications,International Conference on Advances in Electrical and Communication Technologies (ICAECOT),University of Setif

In this paper, a novel and exact mathematical formulation of three mean level constant false alarm rate (CFAR) detectors has been developed considering a homogeneous gamma-distributed (GM) clutter. These detectors include the cell averaging (CA), the greatest-of (GO), and the smallest-of (SO)-CFAR detection schemes. To do so, we derived closed-form expressions for the probability density function (pdf), and the cumulative distribution function (cdf) of the sum of an exponential fluctuating target submerged in gamma-distributed sea clutter. Then, we developed exact and explicit expressions for the probability of false alarm (Pfa) and probability of detection (Pd) of the optimal fixed threshold detector and the three considered CFAR detectors. The correctness of our expressions is then examined and validated via numerical simulations. Assuming a homogeneous GM background, the detection performance of these three detectors is carried out, discussed, and compared with that of the optimal detector. Experimental results with Sentinel-1 synthetic aperture radar (SAR) data demonstrate the effectiveness of the proposed closed-form expressions and show that the considered CFAR schemes are efficient for ship detection in sea clutter backgrounds.

Citation

Mohamed SAHED , ELhadi KENANE , Ali KHALFA , , (2024-09-18), Performance analysis of mean level CFAR detectors in homogeneous gamma-distributed radar clutter, International Journal of Remote Sensing, Vol:45, Issue:24, pages:9338-9358, Taylor & Francis

This work proposes a simple rectenna system operating at 2.45 Ghz ISM bands, using the 50Ω antenna impedance followed by matching impedance and a voltage rectifier circuit. An L-section impedance matching circuit has been designed Depend on RF capacitor and inductor.it was placed between the antenna and the rectifier circuit to reduce the mismatch loss and to ensure maximum power transfer to enhance the rectifier efficiency. Then The rectifier circuit is constructed using voltage doubler configuration with Schottky diode SMS7630−005𝐿F. The proposed design has been simulated and optimized in an advanced design system (ADS ) software. It has been seen in the results that: the proposed system is performing very well at 2.45 𝐺Hz. The proposed rectenna is having a maximum efficiency up to 60% at 2.45 𝐺Hz with an input power of 0 𝑑Bm. Furthermore, with variations in the load resistance across a wide range of values from 5 𝑡o 10 𝑘 Ω with low input power equal to 0 𝑑Bm, the rectenna maintains an efficient power conversion. The output voltage value at 0 𝑑Bm is nearly 1.5 𝑉 with an optimum load 𝑅L = 5 𝐾Ω. The implemented system can be used efficiently for the RF energy harvesting applications.

Citation

Mohamed SAHED , ELhadi KENANE , ,(2024-06-30), Design of efficient 2.45GHz single-band rectenna system for ISM applications,International Conference on Applied Sciences (ICAS - 2024),Travnik, Bosnia and Herzegovina

This work proposes a simple rectenna system operating at 2.45 Ghz ISM bands, using the 50Ω antenna impedance followed by matching impedance and a voltage rectifier circuit. An L-section impedance matching circuit has been designed Depend on RF capacitor and inductor.it was placed between the antenna and the rectifier circuit to reduce the mismatch loss and to ensure maximum power transfer to enhance the rectifier efficiency. Then The rectifier circuit is constructed using voltage doubler configuration with Schottky diode SMS7630−005𝐿F. The proposed design has been simulated and optimized in an advanced design system (ADS ) software. It has been seen in the results that: the proposed system is performing very well at 2.45 𝐺Hz. The proposed rectenna is having a maximum efficiency up to 60% at 2.45 𝐺Hz with an input power of 0 𝑑Bm. Furthermore, with variations in the load resistance across a wide range of values from 5 𝑡o 10 𝑘 Ω with low input power equal to 0 𝑑Bm, the rectenna maintains an efficient power conversion. The output voltage value at 0 𝑑Bm is nearly 1.5 𝑉 with an optimum load 𝑅L = 5 𝐾Ω. The implemented system can be used efficiently for the RF energy harvesting applications.

Citation

Rania GUERNINE , ELhadi KENANE , Mohamed SAHED , Amal SILA , Rima SEGHIOUR , ,(2024-05-31), Design of efficient 2.45GHz single-band rectenna system for ISM applications,the International Conference on Applied Sciences (ICAS - 2024),Bosnia and Herzegovina

in this paper presents recent advancements in the design and implementation of reconfigurable antennas, focusing on their potential to enhance performance metrics such as bandwidth, gain, and radiation pattern agility. Reconfigurable antennas offer attractive potential solutions to solve the problem of the need to use multiple antennas for different applications, such as Bluetooth, Wi-Fi, WiMAX, WLAN, etc. In this paper, a novel frequency reconfigurable, the antenna design using p-i-n diode is proposed. The antenna switches at two different frequencies between 2.4 GHz and 5.2GHz. The design includes a PIN diode in the feeder to achieve frequency reconfiguration. The antenna (41×44×1.6 mm3) is designed on FR4 substrate with permittivity of 4.4 and tangential loss of 0.02 using the CST Microwave studio simulator. The resulting antenna is suitable for applications wireless local-area network (WLAN) technologies.

Citation

Rima SEGHIOUR , ELhadi KENANE , Ali KHALFA , Rania GUERNINE , Amal SILA , ,(2024-05-30), Design of a Reconfigurable Antenna for WLAN Applications,the International Conference on Applied Sciences (ICAS - 2024),Bosnia and Herzegovina

Power divider/combiners are among the most commonly used passive devices in the microwave and millimeter wave systems for modern communication. This paper presents simulation of a wideband GYSEL power divider for wireless applications. The GYSEL PD is a three-port device with matched ports and isolated outputs, suitable for high power applications through the use of two shunt-terminated resistors. The proposed power divider consists of transmission line sections with different characteristic impedances and two grounded resistors. The electrical lengths of all the TLs sections are 90º at the design frequency. The divider network is designed using Computer Simulation Technology software by applying proposed GPD design. The GPD was designed on a Rogers’s RO4003C substrate with dielectric constant of 3.55. The thickness of the substrate is 0.508 mm and loss tangent of 0.0027. The proposed GYSEL power divider is printed on a substrate with a size of 35 x 30 mm2. The simulated results of the proposed divider show good return loss, insertion loss and isolation performance across the band from 3.4 to 3.6 GHz; with central frequency at 3.5 GHz. GYSEL power divider can split an incoming signal into two parts successfully. The measured input return loss (S11) are better than -15 dB, and output return loss (S22, S33 ) is better than -20 dB across the wide-band range. The isolation is greater than -30 dB with a very wide band, from 3.4 to 3.6 GHz. In addition, the power is divided equally between output ports with the same phase. This new structure is suitable for wideband, high isolation, and high power applications.

Citation

Amal SILA , Messaoud GARAH , ELhadi KENANE , Rania GUERNINE , Rima SEGHIOUR , ,(2024-05-30), A Wideband and High Isolation GYSEL Power Divider for Wireless communication,International Conference on Applied Sciences (ICAS - 2024),Travnik, Bosnia and Herzegovina

Due to technological advances, dielectric resonators antennas (DRA) have received an extensive interest for wireless communication applications. In this paper, a simple rectangular dielectric resonator antenna (RDRA) for ISM applications is proposed. The designed DRA operates at ISM frequency band covers the 2.45 𝐺𝐻𝑧. Our RDRA antenna is printed on plastic substrate, which has a thickness of 1.575 𝑚𝑚 with a relative permittivity 𝜀𝑟 of 2.65, and a dielectric loss tangent of 0.025. the proposed RDRA is fed using an aperture-coupled microstrip line. The proposed compact DRA has a size of 49.5 𝑥 49.5 𝑥 1.575 𝑚𝑚3. The dielectric patch has physical dimensions of 30𝑥30𝑥30 𝑚𝑚. The results of the proposed DRA is designed, analyzed and simulated using an EM simulator. The simulated results of indicates that the obtained DRA present a gain of 4.45 𝑑𝐵 and a total efficiency of 93%. In addition, this DRA presents a reflection coefficient S11 less than -10 dB (VSWR<2) over a frequency band of 315.2 𝑀𝐻𝑧 from 2.302 to 2.6171 𝐺𝐻𝑧, which covers the 2.45 𝐺𝐻𝑧 which is dedicated for ISM applications.

Citation

Mohamed SAHED , ELhadi KENANE , ,(2024-05-16), A novel Design of Dielectric Resonator Antenna at 2.45 Ghz for ISM Applications,3rd International Conference on Engineering, Natural and Social Sciences ICENSOS 2024,Konya, Turkey

Dielectric resonator antennas have become widely used in many applications due to their several advantages such as small size, low profile, low loss, and high gain. This work presents a parametric study of a simple rectangular dielectric resonator antenna (RDRA), which is dedicated for ISM applications. To design this antenna, an EM simulation has been used. The proposed structure consists of plastic substrate and a simple Aperture-coupled feed line over a rectangular feeding slot made at the ground plane. The substrate has a relative permittivity 𝜀𝑟 of 2.65. The proposed antenna has a compact size of 49.5 𝑥 49.5 𝑥 1.6 𝑚𝑚3. During this parametric study, our goal is to show the effect of some DRA parameters on some antenna characteristics in terms of resonance frequency and reflection coefficients. Among the DRA parameters which are used in our parametric study, we can cite the physical dimensions of the resonator and the dimensions of the slot. The physical dimensions of the dielectric patch are 30 𝑚𝑚, 30 𝑚𝑚 and 30 𝑚𝑚 for the length, width, and height, respectively. As a results, the parametric study on the different DRA parameters indicates that the dimension of the dielectric patch and the length of the slot have a considerable effect on the resonance frequency value and the adaptation of the DRA.

Citation

Mohamed SAHED , ELhadi KENANE , ,(2024-05-16), Parametric Study of a Dielectric Resonator Antenna for ISM Applications,3rd International Conference on Engineering, Natural and Social Sciences ICENSOS 2024,Konya, Turkey

Due to technological advances, dielectric resonators antennas (DRA) have received an extensive interest for wireless communication applications. In this paper, a simple rectangular dielectric resonator antenna (RDRA) for ISM applications is proposed. The designed DRA operates at ISM frequency band covers the 2.45 𝐺𝐻𝑧. Our RDRA antenna is printed on plastic substrate, which has a thickness of 1.575 𝑚𝑚 with a relative permittivity 𝜀𝑟 of 2.65, and a dielectric loss tangent of 0.025. the proposed RDRA is fed using an aperture-coupled microstrip line. The proposed compact DRA has a size of 49.5 𝑥 49.5 𝑥 1.575 𝑚𝑚3. The dielectric patch has physical dimensions of 30𝑥30𝑥30 𝑚𝑚. The results of the proposed DRA is designed, analyzed and simulated using an EM simulator. The simulated results of indicates that the obtained DRA present a gain of 4.45 𝑑𝐵 and a total efficiency of 93%. In addition, this DRA presents a reflection coefficient S11 less than -10 dB (VSWR<2) over a frequency band of 315.2 𝑀𝐻𝑧 from 2.302 to 2.6171 𝐺𝐻𝑧, which covers the 2.45 𝐺𝐻𝑧 which is dedicated for ISM applications.

Citation

Rania GUERNINE , ELhadi KENANE , Mohamed SAHED , Amal SILA , Rima SEGHIOUR , ,(2024-05-16), A novel Design of Dielectric Resonator Antenna at 2.45 Ghz for ISM Applications,3rd International Conference on Engineering, Natural and Social Sciences, ICENSOS 2024,Konya Turkey

Dielectric resonator antennas have become widely used in many applications due to their several advantages such as small size, low profile, low loss, and high gain. This work presents a parametric study of a simple rectangular dielectric resonator antenna (RDRA), which is dedicated for ISM applications. To design this antenna, an EM simulation has been used. The proposed structure consists of plastic substrate and a simple Aperture-coupled feed line over a rectangular feeding slot made at the ground plane. The substrate has a relative permittivity 𝜀𝑟 of 2.65. The proposed antenna has a compact size of 49.5 𝑥 49.5 𝑥 1.6 𝑚𝑚3. During this parametric study, our goal is to show the effect of some DRA parameters on some antenna characteristics in terms of resonance frequency and reflection coefficients. Among the DRA parameters which are used in our parametric study, we can cite the physical dimensions of the resonator and the dimensions of the slot. The physical dimensions of the dielectric patch are 30 𝑚𝑚, 30 𝑚𝑚 and 30 𝑚𝑚 for the length, width, and height, respectively. As a results, the parametric study on the different DRA parameters indicates that the dimension of the dielectric patch and the length of the slot have a considerable effect on the resonance frequency value and the adaptation of the DRA.

Citation

Rania GUERNINE , ELhadi KENANE , Mohamed SAHED , Amal SILA , Rima SEGHIOUR , ,(2024-05-16), Parametric Study of a Dielectric Resonator Antenna for ISM Applications,3rd International Conference on Engineering, Natural and Social Sciences (ICENSOS 2024),Konya Turkey

Reconfigurable antennas can be used in contemporary wireless and portable devices to work across many frequency bands and scan radiation patterns in accordance with user requirements. In this paper, we present a simple frequency reconfigurable antenna. Using frequency reconfigurability, one antenna can be used for many applications only by switching between the selected bands. To do the reconfigurability, PIN diodes will be used, by strategically placing these diodes within the antenna structure, the resonance frequency can be adjusted with minimal power consumption. The proposed antenna consists of two asymmetric L-shaped rectangular patches electrically connected by a single PIN diode. The suggested antenna can function in two different frequency bands, depending on the PIN diode's switching state. It operates at 2.1GHz (3G) and 3.5 GHz (5G) during forward bias of the diode, 5.3 GHz (WiMAX) and 2.1 GHz (3G) during reverse bias of the diode. The antenna (32×44×1.6 mm3) is designed on FR4 substrate with permittivity of 4.4 and tangential loss of 0.02 using the CST Microwave studio simulator. this antenna presents a high gain and favorable radiation characteristics in the operating range which is required for fifth-generation networks (5G), and microwave connectivity worldwide interoperability (WiMAX) applications.

Citation

Rima SEGHIOUR , ELhadi KENANE , Ali KHALFA , Rania GUERNINE , Amal SILA , ,(2024-05-16), A novel Frequency Reconfigurable L-shaped Antenna for WiMAX and 5G Application,3rd International Conference on Engineering, Natural and Social Sciences ICENSOS 2024,Konya, Turkey

A power divider (PD) is a fundamental component in wireless communication systems. This microwave component divides the input power equally or unequally into several smaller outputs. There are many types of PDs in microwave domain such as Wilkinson power divider (WPD), GYSEL power divider (GPD) and others, however, WPDs are commonly used in microwave electronics. These dividers typically operate at a single frequency band and utilize two quarter-wavelength (λ/4) transmission lines and one isolation resistor. The standard WPD distributes power equally with minimal loss, presents reciprocity as it behaves similarly in both directions, and provides high isolation between the output ports. This paper presents the design of a WPD with coupled lines for wireless applications. The coupled lines offer many advantages to the standard WPD in terms of wide operating frequency range, compact size, and low profile. The proposed WPD operates at 2.1 GHz third generation mobile applications. The designed Wilkinson PD was printed on a Rogers' RO4003C substrate with a dielectric constant of 3.55. The substrate thickness is 0.813 mm, and a copper thickness of 35 μm. Based on the simulation results, it is shown that the proposed WPD presents low return losses in all the ports and high isolation over the third-generation mobile band.

Citation

Amal SILA , Messaoud GARAH , ELhadi KENANE , Rania GUERNINE , Rima SEGHIOUR , ,(2024-05-16), Design of Coupled-Line Wilkinson Power Divider for Wireless Communications,3rd International Conference on Engineering, Natural and Social Sciences ICENSOS 2024,Turkey

Power dividers are widely used in antenna arrays feeding, radar systems, communication systems, and medical imaging systems, which makes it indispensable microwave components. These power dividers have several design advantages such as low cost, lightweight and manufacturability. Among these power dividers, one can cite Gysel power dividers which are used for antenna array feeding with high power-handling capability. This work presents a parametric study of a standard design of a Gysel divider intended for mobile applications. To design this power divider, the ADS Momentum simulator has been used. During this parametric study, our goal is to show the effect of some design parameters such as physical dimensions and electrical properties on some GPD characteristics in terms of bandwidth, power ratio, and isolation. The proposed structure consists of standard Gysel power divider of three ports and operating at the frequency of 2.4 GHz.

Citation

Amal SILA , ELhadi KENANE , Messaoud GARAH , ,(2023-10-21), Design and Parametric Study of a GYSEL Power Divider for Mobile Applications,NILES 2023,Nile university Egypt

This letter presents an analytical study of the performance of the maximum-likelihood gamma constant false alarm rate (MLG-CFAR) detector operating over a homogenous gamma-distributed (GM) clutter. To accomplish this task, a novel closed-form expression for the probability of false alarm and a highly accurate approximation for the probability of detection are derived. Specifically, this proposed approximation is also given in a closed form. These expressions, which can be of great interest to the radar community, are given in terms of the Gauss hypergeometric function and the Tricomi function. Besides, the proposed expressions can be easily implemented and computed using most popular scientific software packages such as MATLAB, Maple, and Mathematica. Our propositions are then tested and validated using numerical computing and Monte Carlo simulations. The obtained results demonstrate a high accuracy and significant computational advantages of the proposed expressions compared to the alternative ones. Moreover, the detection performance of the MLG-CFAR detector is also conducted assuming a homogenous clutter with a known shape parameter.

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Mohamed SAHED , ELhadi KENANE , Ali KHALFA , fdjahli@yahoo.fr, , (2023-08-07), Performance Analysis of the MLG-CFAR Detector in Homogenous Gamma-Distributed Sea Clutter, IEEE Geoscience and Remote Sensing Letters, Vol:20, Issue:2023, pages:1-5, IEEE

In this correspondence, two exact closed-form expressions for the probability of false alarm have been derived assuming a homogeneous Gamma distributed clutter. These expressions concern both the cell averaging CFAR (CA-CFAR) and the greatest of CFAR (GO-CFAR) detectors. As it will be shown, the proposed expressions are given in terms of the Gauss hypergeometric function and the second Appell function. Our expressions are then examined and validated numerically, by comparing them to their counterparts computed using numerical integrals and Monte-Carlo simulations, considering various scenarios.

Citation

ELhadi KENANE , Mohamed SAHED , Ali KHALFA , Farid Djahli, , (2023-08-01), Exact Closed-Form Pfa Expressions for CA- and GO-CFAR Detectors in Gamma-Distributed Radar Clutter, IEEE Transactions on Aerospace and Electronic Systems, Vol:59, Issue:4, pages:4674 - 4679, IEEE

Among the most used power dividers in the field of telecommunications (antenna networks, mobile networks, radar system, satellite communications,military applications and even missile guidance) we can mention the Wilkinson power divider.In the present paper, a dual band Wilkinson power divider with four ways will be designed. In order to investigate the relationship between the physical dimensions of the Wilkinson power divide rwith its characteristics in terms of operational frequency and bandwidth, a parametric study of a Wilkinson power divider will be presented.To design the dual band four-way Wilkinson power divider (WPD), ADS Momentum simulator is used. The simulator uses a genetic algorithm (GA) algorithm to optimize the structure of the proposed WPD.The proposed power divider is developed to achieve dual bands requirements of WLAN applications. To obtain these frequency specifications in the proposed WPD, many transmission lines sections are added. The transmission lines are printed on FR4 (Flame Resistant 4) substrate of dielectric constant εr of3.4 with loss tangent of 0.0023. The proposed circuit exhibits good characteristics at WLAN frequencies (2.45GHz & 5.8 GHZ) in terms of return loss and isolation.

Citation

Messaoud GARAH , ELhadi KENANE , Fadila BENMEDDOUR , , (2022-02-01), Parametric Study and Optimization of a Dual-BandFour Port Wilkinson Power Divider, International Journal of Information Science & Technology, Vol:6, Issue:1, pages:2550-5114, https://innove.org/ijist/index.php/ijist/article/view/176

Signal and image separation are extensively used in numerous imaging applications and communication systems. In this paper, a novel Blind Source Separation (BSS) approach, based on the Hybrid Firefly Particle Swarm Optimization (HFPSO), is proposed for separating mixed images. This approach processes the observed source without any prior knowledge about the model and the statistics of the source signal. The proposed method presents high robustness against local minima and converges quickly to the global minimum. Via numerical simulations, the proposed approach is tested and validated in comparison with standard Particle Swarm Optimization (PSO), Robust Independent Component Analysis (RobustICA), and Artificial Bee Colony (ABC) algorithms. The obtained results show that the presented technique outperforms the existing ones in terms of quality of image separation, the Signal-to-Noise Ratio (PSNR), and Structural Similarity Index Measure (SSIM). Moreover, the obtained results demonstrate that our approach provides also promising results in image separation from noisy mixtures.

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ELhadi KENANE , Ali KHALFA , Mohamed SAHED , Farid Djahli, , (2022), A Novel Blind Image Source Separation Using Hybrid Firefly Particle Swarm Optimization Algorithm, Engineering, Technology & Applied Science Research, Vol:12, Issue:6, pages:9680-9686, ETASR

Nowadays, the world knows a huge revolution in telecommunications, which has led to the need to integrate many services, such as long-term evolution (LTE), 5G, wireless local area network (WLAN), and Bluetooth, in one receiving and transmitting device. In the same way, all active and passive microwave circuits must be compatible with the integration of services, including the power divider, which is the subject of our work. This passive component is used in several fields such as medicine, surveillance, radar systems and others applications. Wilkinson divider is one of the most prominent power dividers, it is classified as narrow-band power divider and it is a very useful component in mobile applications (2.4 and 5.8 GHz). In this work, a reconfigurable 4-ports Wilkinson divider is designed using PIN diodes and simulated using connected speech test (CST) simulator software. This designed divider can easily modify the operation mode by activating or disabling the PIN diodes.

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ELhadi KENANE , Messaoud GARAH , Farid Djahli, , (2022), A novel design of a reconfigurable power divider with stubs for mobile applications, Indonesian Journal of Electrical Engineering and Computer Science, Vol:26, Issue:2, pages:846-853, ijeecs

Blind source separation (BSS) concerns the signal processing techniques that aim to find several elementary components of sources from linear combinations of these sources received on several sensors. This paper presents a method for the extraction of these independent components. It is called Joint Approximate Diagonalization of Eigenmatrices (JADE) and uses fourth-order cumulants. A simulation example shows the performance of the proposed algorithm by displaying its high separation accuracy. The proposed technique is compared to the Equivariant Adaptive Source Separation Algorithm (EASI).

Citation

ELhadi KENANE , Ali KHALFA , Amardjia Noureddine, , (2022), Blind Image Separation Using the JADE Method, engproc, Vol:14, Issue:1, pages:1-7, MDPI Tongzhou Office, Beijing

This paper examines a downlink multi-hop user relays assisted non-orthogonal multiple access (NOMA). The system is used to combat channel disorders, extend the coverage area, and improve the quality of service (QoS). Both imperfect successive interference cancellation (SIC) and channel state information (CSI) are taken into consideration. Under imperfect SIC and CSI, we obtain the bit error rate (BER) and outage probability (OP) expressions for the helper user. Then, when imperfect CSI is available at all hops, we compute the end-toend BER and OP for far user message at each hop. Theoretical analyses are validated by computer simulations. The findings indicate that the BER and OP performance deteriorate as the hops increase. Additionally, at the high signal-to-noise ratio (SNR), the erroneous SIC and CSI create an error floor and impact the BER and OP performance at all hops

Citation

ELhadi KENANE , ,(2022), BER and Outage Performance for Multi-hop User-Relays NOMA with Imperfect SIC and CSI,ICATEEE22,University of Msila

The use of invasive weeds optimization in the synthesis of antenna arrays has become popular in the last few years. This optimization method is robust, simple and can be easily improved. Like other stochastic algorithms, IWO suffers from premature convergence and other drawbacks. To overcome these problems, a dynamic IWO is proposed and used for synthesizing two antenna array topologies (linear and circular array). This proposed method tries to achieve an optimal array pattern by acting on the amplitude excitation of elements in the non-uniform circular array and their positions on the array to obtain an array pattern with deep nulls in some directions of interferences and low side lobe level. For the linear array, the nulls control can be achieved by acting on the relative amplitude excitation of each element in the array for an optimal inter-element spacing. This proposed method improves the performance greatly and allows to achieve a maximum reduction in side lobe level in band Nulls with an acceptable dynamic range ratio (DRR). To show the performance of the proposed method, for each topology, our results are compared to other results of the literature.

Citation

ELhadi KENANE , Fadila BENMEDDOUR , Farid Djahli, , (2021-03-24), Nonuniform Circular Array Synthesis for Low Side Lobe Level Using Dynamic Invasive Weeds Optimization., Progress In Electromagnetics Research C, Vol:111, Issue:1, pages:147-162, PIER

The use of invasive weeds optimization in the synthesis of antenna arrays has become popular in the last few years. This optimization method is robust, simple and can be easily improved. Like other stochastic algorithms, IWO suffers from premature convergence and other drawbacks. To overcome these problems, a dynamic IWO is proposed and used for synthesizing two antenna array topologies (linear and circular array). This proposed method tries to achieve an optimal array pattern by acting on the amplitude excitation of elements in the non-uniform circular array and their positions on the array to obtain an array pattern with deep nulls in some directions of interferences and low side lobe level. For the linear array, the nulls control can be achieved by acting on the relative amplitude excitation of each element in the array for an optimal inter-element spacing. This proposed method improves the performance greatly and allows to achieve a maximum reduction in side lobe level in band Nulls with an acceptable dynamic range ratio (DRR). To show the performance of the proposed method, for each topology, our results are compared to other results of the literature.

Citation

Fadila BENMEDDOUR , ELhadi KENANE , Farid Djahli, , (2021-02-04), Parametric Study and Optimization of a Dual-BandFour Port Wilkinson Power Divider, Progress In Electromagnetics Research C, Vol:111, Issue:111, pages:147-162, Progress In Electromagnetics Research

In the present work, a dynamic stochastic method is proposed and used for the synthesis of uniform linear antenna arrays. The proposed method combines the classical invasive weeds (IWO) and the mutation process, which makes it robust, simple and shows flexibility to be adapted. The dynamic IWO applies the mutation process in the calculation of standard deviation during the spatial dispersal process of produced seeds while keeping the mean at the parent plants. In the mutation process, if special conditions were achieved, the standard deviation would be re-initialized. This proposed method tries to achieve an optimal array pattern by acting on the relative amplitude excitation of each element in the linear array for an optimal inter-element spacing. The optimal array pattern has deep or broad nulls in some directions of interferences with low sidelobes level. The objective of the synthesis is to get amplitude excitations with low dynamic range ratio (DRR), which facilitates the design of beamforming feed network. To illustrate the robustness of the proposed method, numerical examples are presented and compared with the obtained results using bees algorithm (BA), bacterial foraging algorithm (BFA), real genetic algorithm (RGA), and the corresponding reference array pattern for each example.

Citation

ELhadi KENANE , Haddi BAKHTI , Haddi BAKHTI , Farid Djahli, , (2021), A Dynamic Invasive Weeds Optimization Applied to Null Control of Linear Antenna Arrays with Constrained DRR, Advanced Electromagnetics, Vol:10, Issue:1, pages:52-60, Advanced Electromagnetics

Blind source separation (BSS) concerns the signal processing techniques that aim to find several elementary components of sources from linear combinations of these sources received on several sensors. This paper presents a method for the extraction of these independent components. It is called Joint Approximate Diagonalization of Eigenmatrices (JADE) and uses fourth-order cumulants. A simulation example shows the performance of the proposed algorithm by displaying its high separation accuracy. The proposed technique is compared to the Equivariant Adaptive Source Separation Algorithm (EASI)

Citation

ELhadi KENANE , Ali KHALFA , Amardjia Noureddine, ,(2021), Blind Image Separation Using Joint Approximate Diagonalization of Eigenmatrices (JADE) Method,ICCEIS2021,University of Boumerdes

In the present paper, a dual band four-way Wilkinson power divider (WPD) using a genetic algorithm (GA) optimization is designed and simulated using ADS Momentum simulator. The proposed power divider is developed to support dual bands of WLAN applications. The present power divider is formed by many transmission lines sections. The transmission lines are printed on FR4 (Flame Resistant 4) substrate of dielectric constant εr of3.4 with loss tangent of 0.0023. The proposed circuit exhibits good characteristics at WLAN frequencies (2.45GHz & 5.8 GHZ) in terms of return loss and isolation.

Citation

Messaoud GARAH , ELhadi KENANE , Fadila BENMEDDOUR , ,(2020-12-12), A Dual Band Four Ports WILKINSON Power Divider Design,IEEE 6th International Congress on Information Science and Technology (CiSt), Morocco,Morocco

In this paper, a tri-band inverted F antenna was proposed for wireless data telemetry and power transmission operation. This antenna will be implanted in human body. This surrounding medium witch having the properties of biological tissues will be considered. The proposed antenna covers three bands: MedRadio (401 – 405)MHz, and ISM (902.8 – 928)MHz, and ISM (2.4 – 2.5) GHz. The antenna is inserted in the biological tissue, The dimensions of the proposed antenna are 16 × 11 × 1:27mm3. The presented antenna is printed on Roger RO3210 substrate with dielectric constant "r = 10:2 and tan δ = 0:003

Citation

ELhadi KENANE , ASMA Djellid , ,(2020), Design of implanted tri-band PIFA antenna for MedRadio and ISM bands,IC3E2020,University of Buira

The spectral Domain approach is extensively used in microstrip analysis and domain. In such approach, the spectral dyadic Green's function which relates the tangential electric field and currents at various conductor planes should be determined. Many techniques have been proposed to derive the Green's function. The effect of both uniaxially anisotropy in the substrate on the resonant frequency and bandwidth of circular microstrip patch are investigated. The problem is regorously formulated using integral equation, the Kernel of which in the full wave spectral domain dyadic Green's function for multilayer dielectric substrates.

Citation

Fadila BENMEDDOUR , ELhadi KENANE , Dib Samira, Christophe Dumon, ,(2019-12-17), spectral domain analysis of circular printed antenna on uniaxially anisotrop substrate,ICAME2019,Istanbul, Turkey

In practice, it was found that the choice of the substrate or superstrate material of printed antennas is of a great importance and plays a significant role in achieving the optimum resonant characteristics of the antenna; Uniaxial dielectrics have drawn more attention due to their availability in materials such as sapphire, boron nitride and Epsilam-10 ceramic-impregnated Tefon. Previous studies of anisotropic materials used in microwave devices indicate that the effects of anisotropy on the performance of such structures particularly in high frequencies cannot be ignored. Three very popular full wave methods that can be used to characterise microstrip patch antennas are: the finite element method, the finite difference time domain method, and the moment method. The last one also known as the full-wave method is arguably the most popular method for the analysis of microstrip antennas. In this work, resonant characteristics (the resonant frequency, the Half-power bandwidth) of an annular microstrip patch printed on uniaxially anisotropic substrate and covered with an anisotropic superstrate layer are studied using an electric field integral equation and the spectral domain Green’s function. In order to validate the present method, we have confronted our results with theoretical and experimental data from the literature and very Good agreements were obtained between our computed data and measurements, and the convergence of the method is proven.

Citation

Fadila BENMEDDOUR , ELhadi KENANE , DUMOND Christophe, ,(2019-10-26), Effects of Superstrate Layer on the Resonant Characteristics of Annular-Ring printed Antenna,International Conference on Technology, Engineering and Science (IConTES 2019),Antalya, Turkey

In practice, it was found that the choice of the substrate or superstrate material of printed antennas is of a great importance and plays a significant role in achieving the optimum resonant characteristics of the antenna; Uniaxial dielectrics have drawn more attention due to their availability in materials such as sapphire, boron nitride and Epsilam-10 ceramic-impregnated Tefon. Previous studies of anisotropic materials used in microwave devices indicate that the effects of anisotropy on the performance of such structures particularly in high frequencies cannot be ignored. Three very popular full wave methods that can be used to characterise microstrip patch antennas are: the finite element method, the finite difference time domain method, and the moment method. The last one also known as the full-wave method is arguably the most popular method for the analysis of microstrip antennas. In this work, resonant characteristics (the resonant frequency, the Half-power bandwidth) of an annular microstrip patch printed on uniaxially anisotropic substrate and covered with an anisotropic superstrate layer are studied using an electric field integral equation and the spectral domain Green’s function. In order to validate the present method, we have confronted our results with theoretical and experimental data from the literature and very Good agreements were obtained between our computed data and measurements, and the convergence of the method is proven.

Citation

Fadila BENMEDDOUR , ELhadi KENANE , DUMOND Christophe, , (2019-10-26), Effects of Superstrate Layer on the Resonant Characteristics of Annular-Ring printed Antenna, The Eurasia Proceedings of Science, Technology, Engineering & Mathematics (EPSTEM), Vol:7, Issue:2019, pages:147 - 154, ISRES Publishing

Blind Source Separation (BSS) is a technique used to separate supposed independent sources of signals from a given set of observations. In this paper, the High Exploration Particle Swarm Optimization (HEPSO) algorithm, which is an enhancement of the Particle Swarm Optimization (PSO) algorithm, has been used to separate a set of source signals. Compared to PSO algorithm, HEPSO algorithm depends on two additional operators. The first operator is based on the multi-crossover mechanism of the genetic algorithm while the second one relies on the bee colony mechanism. Both operators have been employed to update the velocity and the position of the particles respectively. Thus, they are used to find the optimal separating matrix. The proposed method enhances the overall efficiency of the standard PSO in terms of good exploration and performance. Based on many tests realized on speech and music signals supplied by the BSS demo, experimental results confirm the robustness and the accuracy of the introduced BSS technique.

Citation

Ali KHALFA , ELhadi KENANE , Nourredine AMARDJIA, Djamel chikouche, Abdelouahab Attia, , (2019), Blind Audio Source Separation Based On High Exploration Particle Swarm Optimization, KSII Transactions on Internet and Information Systems, Vol:13, Issue:5, pages:2574-2587, TIIS

Water is a vital resource for life as well as for the majority of energy industries. Finding a way to manage this water sustainably is essential at a time when the world’s water resources are already under increasing stress due to population growth and global warming. As a direct implication, saving water is coming very crucial. This work deals with the application of the empirical mode decomposition method to the detection and the localization of the leaks using acoustic signals issued from STM32F4 acquisition card. Firstly, the empirical mode decomposition method has been applied in the denoising of acquired signals leading to two estimated components on which we apply secondly the correlation method to detect and localize the leakage in water distribution network. Experimental obtained results using a developed hydraulic plant as well as the acquisition system confirm the efficiency of the proposed method to detect accurately the leaks compared to conventional leaks detection methods.

Citation

Haddi BAKHTI , Miloud BENTOUMI , ELhadi KENANE , Abdelghani Harrrag, , (2019), Experimental Validation of Hybrid EMD-Correlation Acoustic Digital Leaks Detector in Water Distribution Network System, Instrumentation Mesure Métrologie, Vol:18, Issue:6, pages:535-545, IIETA

Effects of a superstrate layer on the resonant frequency and bandwidth of a high Tc superconducting (HTS) circular printed patch are investigated in this paper. For that, a rigorous full-wave spectral analysis of superconducting patch in multilayer configuration is described. In such an approach, the spectral dyadic Green's function which relates the tangential electric field and currents at various conductor planes should be determined. Integral equations are solved by a Galerkin's moment method procedure, and the complex resonance frequencies are studied with basis functions involving Chebyshev polynomials in conjunction with the complex resistive boundary condition. To include the superconductivity of the disc, its complex surface impedance is determined by using London's equation and the model of Gorter and Casimir. Numerical results are compared with experimental results of literature as well as with the most recent published calculations using different methods. A very good agreement is obtained. Finally, superstrate loading effects are presented and discussed showing interesting enhancement on the resonant characteristics of the superconducting antenna using combinations of Chebyshev polynomials as set of basis functions.

Citation

Fadila BENMEDDOUR , ELhadi KENANE , Christophe Dumon, , (2018-07-23), Resonant Characteristics of Circular HTC Superconducting Printed AntennaCoveredwith a Dielectric Layer, Progress In Electromagnetics Research M, Vol:71, Issue:9, pages:9-18, PIER

Dans cet ouvrage, nous proposons une méthode d'optimisation qui permet de faire la synthèse d'un réseau d'antennes linéaires en contrôlant les poids d'alimentations et/ou la distance inter-éléments d'un réseau d'antennes adaptatif, afin de maximiser le rapport signal à bruit plus interférences (SINR) et minimiser le niveau de lobes secondaires (NLS). Cette méthode est basée sur une méthode récente, dite méthode des mauvaises herbes (invasive weed optimization), inspirée du comportement intelligent de la colonisation des mauvaises herbes dans la nature. Elle a été développée pour la première fois en 2006, puis modifiée afin d'augmenter la vitesse de convergence et améliorer l'exploration de l'espace de recherche. Le choix de l'écart type affecte souvent les deux caractéristiques précédentes (la vitesse de convergence et l'exploration de l'espace de recherche). Pour évaluer la robustesse et les performances de cette méthode par rapport à d'autres méthodes équivalentes telles que l'algorithme génétique, l'essaim de particule et l'algorithme d'évolution différentielle (DE), plusieurs exemples de synthèse sont présentés.

Citation

ELhadiKENANE , Farid Djahli, ,(2018); Techniques d'optimisation des réseaux d'antennes intelligentes : utilisées en téléphonie mobile,,Noor Publishing

The main goal of the present paper is the study of transmitted power control (TPC) algorithms for mobile cellular systems (UMTS). A novel power control algorithm and some already existing ones have been studied focusing on resolving the near-far problem that affects the performance of the system a whole. Unlike the other existing power control algorithms, and besides the dynamic step size, our Modified Adaptive Power Control algorithm (MAPC) shows its uniqueness in the intelligence added to restrict the oscillations of the estimated signal to interference ratio (SIR) around its target value by using a stabilization zone. Simulations were carried out to evaluate the robustness of the novel algorithm. The results show that the proposed algorithm outperforms the other existing power control algorithms.

Citation

ELhadi KENANE , Haddi BAKHTI , Miloud BENTOUMI , Fegriche Fatima zahra, Farid Djahli, ,(2018), An Adaptive Power Control Algorithm For 3G Cellular Networks,International Conference on Communications and Electrical Engineering,El Oued, Algeria

This paper presents a new modified method for the synthesis of non-uniform linear antenna arrays. Based on the recently developed invasive weeds optimization technique (IWO), the modified invasive weeds optimization method (MIWO) uses the mutation process for the calculation of standard deviation (SD). Since the good choice of SD is particularly important in such algorithm, MIWO uses new values of this parameter to optimize the spacing between the array elements, which can improve the overall efficiency of the classical IWO method in terms of side lobe level (SLL) suppression and nulls control. Numerical examples are presented and compared to the existing array designs found in the literature, such as ant colony optimization (ACO), particle swarm optimization (PSO), and comprehensive learning PSO (CLPSO). Results show that MIWO method can be a good alternative in the design of non-uniform linear antenna array.

Citation

ELhadi KENANE , Farid Djahli, , (2016), Optimum design of non-uniform symmetrical linear antenna arrays using a novel modified invasive weeds optimization, Archives of electrical engineering, Vol:65, Issue:1, pages:5-18, De Gruyter

In this paper, a novel modified invasive weeds optimization (MIWO) is used for the synthesis of linear array antennas. The synthesis problem discussed in this paper is to find the amplitude excitation of the antenna array elements that are optimum to provide radiation pattern with symmetric wide nulls in both sides of the main beam. The Dynamic Range Ratio (DRR) is taken into account in this study. Unlike other simple algorithms, the Modified Invasive Weeds Optimization (MIWO) uses the mutation in the calculation of standard deviation, which changes the step of search in many directions and positions, from the parent plant, to produce new seeds. This proposed algorithm improves the performance greatly and allows to achieve a maximum reduction in side lobe level in band Nulls and with an acceptable DRR value. To show the performance of the proposed method, our results are compared to other results in the literature. They are also compared to a uniform excited linear.

Citation

ELhadi KENANE , Djahli Farid, Christophe Dumond, ,(2015), A Novel Modified Invasive Weeds Optimization for Linear Array Antennas Nulls Control,4th IEEE International Conference on Electrical Engineering (ICEE 2015),Boumerdes, Algeria

In this paper, a new modified method is presented for the synthesis of a linear antenna array to obtain a desired array pattern (shaped or pencil) with low side lobe level. Based on the original invasive weeds optimization (IWO), our modified IWO (MIWO) uses the process of mutation for the calculation of standard deviation. The shaped beam pattern is synthesized by respecting a desired cosecant pattern and supressing side lobe level to -25 dB. To achieve the desired pattern, both amplitude and phase of each element in the array are optimized when the spacing between the elements is fixed to the half wavelength. For the desired pencil beam pattern, the inter-element spacing’s are controlled while maintaining uniform excitations. Selected examples, for both shaped and pencil beam, are presented to show the effectiveness and flexibility of the proposed method

Citation

ELhadi KENANE , Farid Djahli, Bartil Arres, , (2015), Synthesis of Cosecant Linear Antenna Array Pattern using a Novel Modified Invasive Weeds Optimization, Elektronika IR Elektrotechnika, Vol:21, Issue:5, pages:86-89, Elektronika ir Elektrotechnika