MESSAOUD Garah

BEN ALLIA FARES ELAMINE , REGUIEG YOUNES, /

Réalisation d’une carte de commande universel pour une lave-linge

BEN ALLIA FARES ELAMINE , REGUIEG YOUNES

Réalisation d’une carte de commande universel pour une lave-linge

Boussakra Yasmine , Ben Aiche Abde Raouf

Conception et réalisation d'une station météorologique à base de l'arduino uno

Manel Safer , El-Hassen Tahi

Réalisation d’un Suiveur Solaire Bi-axial à Base de capteurs de lumière

CHIKH Bader Eddine , BARKA Abdelwahab

Système de verrouillage de la porte avec un système d’alarme basé sur la technologie RFID et le clavier en utilisant Arduino

Touatit Badreddine , Benzaoui Ismail

Etude comparative pour l’optimisation d’un modèle de propagation approprié pour la communication mobile

Takha AIMEN , Charif OKBA

Traqueur de localisation en utilisant GSM SIM800 et Arduino

meguirche nor eddine , ghadban abd errazzak, /

realisation d'une carte d'aquisition et supervision en utilisant un module GSM

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

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

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.

Citation

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

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, the most widely used empirical path loss models are compared to real data; the most appropriate one (COST-231) has been optimized using three different algorithms to fit measured data for mobile communication system. The performance of the adjusted Cost-231 model obtained by the proposed methods is then compared to the experimental data. The concert criteria selected for the comparison of various empirical path loss models is the Root Mean Square Error (RMSE). From numerical simulations, it was noticed a significant improvement in the prediction made by the proposed algorithm with a slight superiority of Invasive weed Optimization algorithm in term of lower RMSE value in one hand and in term of convergence speed on the other hand compared to PSO and ABC algorithm

Citation

Houcine OUDIRA , Messaoud GARAH , djouane lotfi, , (2019), Optimization of Suitable Propagation Model for Mobile Communication in Different Area, International Journal of Information Science & Technology, Vol:3, Issue:3, pages:10-19, http://www.innove.org/

Due to the motion of mobile station with respect to the base station, the handover is required frequently in the communication process. In this paper, assuming that the user location and speed can be determined, we propose a suitable scheme for managing a queuing of handover requestes in wireless cellular network. The principle of the proposed method is the use of a separate queue for each transceiver in the cell (3TRX per cell) instead of using a single one and we consider that handover request to cell is queued with dynamic priority discipline; highest priority (head of the queue), least priority (joins the end of the queue). Fixed channel allocation is considered and call blocking probability (CBP), handover failure probability (HFP) are obtained as a results. In order to choose the best model which reduces significantly the handover failure probability, a comparison between the proposed model and the classical one is considered. Simulation results highlight that the newly proposed architecture can guarantee superior performance with respect to its competitor.

Citation

Messaoud GARAH , Houcine OUDIRA , , (2019), Priority Management of the Handoff Requests in Mobile Cellular Networks, Procedia Computer Science, Vol:158, Issue:158, pages:295-302, elsevier

In this paper, the most widely used empirical path loss models are compared to real data; the most appropriate one (COST-231) has been optimized using three different algorithms to fit measured data for mobile communication system. The performance of the adjusted Cost-231 model obtained by the proposed methods is then compared to the experimental data. The concert criteria selected for the comparison of various empirical path loss models is the Root Mean Square Error (RMSE). From numerical simulations, it was noticed a significant improvement in the prediction made by the proposed algorithm with a slight superiority of PSO algorithm in term of lower RMSE value in one hand and in term of convergence speed in the other hand compared to GA and N-M method.

Citation

Houcine OUDIRA , Messaoud GARAH , lotfi djouane, ,(2018), Empirical Path Loss Models Optimization for Mobile Communication,2018 IEEE 5th International Congress on Information Science and Technology (CiSt),Marrakech, Morocco