RIMA Seghiour
ريمة صغيور
rima.seghiour@univ-msila.dz
0668080567
- Departement of ELECTRONICS
- Faculty of Technology
- Grade PHd
About Me
Master. in university Msila
DomainScience et Technologies
Research Domains
Rotman Lens 5G antennas
FiliereElectronique
Location
Msila, Msila
Msila, ALGERIA
Code RFIDE- 12-11-2020
- 26-06-2018
- 1995-03-23 00:00:00
-
RIMA Seghiour birthday
- 2025-07-05
-
2025-07-05
Design of a Frequency-Reconfigurable Antenna for 5G Applications
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
- 2025-05-07
-
2025-05-07
High Isolation GYSEL Power Divider with fixed characteristic Impedance
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
- 2025-05-07
-
2025-05-07
High Isolation GYSEL Power Divider with fixed characteristic Impedance
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
- 2025-05-07
-
2025-05-07
Design of a Frequency-Reconfigurable Antenna for 5G Applications
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
- 2024-12-17
-
2024-12-17
Analysis and Design of Wideband Vivaldi Antenna for 5G Applications
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
- 2024-11-20
-
2024-11-20
Tunable DRA with parasitic elements for ISM band applications
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.
- 2024-10-01
-
2024-10-01
Design of Coupled-Line Wilkinson Power Divider for UMTS mobile applications
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
- 2024-05-31
-
2024-05-31
Design of efficient 2.45GHz single-band rectenna system for ISM applications
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
- 2024-05-30
-
2024-05-30
Design of a Reconfigurable Antenna for WLAN Applications
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
- 2024-05-30
-
2024-05-30
A Wideband and High Isolation GYSEL Power Divider for Wireless communication
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
- 2024-05-16
-
2024-05-16
A novel Design of Dielectric Resonator Antenna at 2.45 Ghz for ISM Applications
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
- 2024-05-16
-
2024-05-16
Parametric Study of a Dielectric Resonator Antenna for ISM Applications
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
- 2024-05-16
-
2024-05-16
A novel Frequency Reconfigurable L-shaped Antenna for WiMAX and 5G Application
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
- 2024-05-16
-
2024-05-16
Design of Coupled-Line Wilkinson Power Divider for Wireless Communications
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