Browsing by Author "MELOUKI, Noureddine"

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    Contribution to the analysis and design of a microstrip antenna based on EBG structures for modern wireless communication systems « Contribution à l’analyse et à la conception d’une antenne microstrip à base de structures EBG pour les systèmes de communication sans fil modernes. »
    (university of M'sila, 2021-07-17) MELOUKI, Noureddine; Enca/HOCINI, Abdesselam
    This thesis focuses on the analysis and design of microstrip antennas working in a wide range of frequency bands (WiMAX, UWB, Ku-band, mm-Wave), and based on electromagnetic band gap (EBG) structures. A mushroom-like EBG structurebased substrate is designed, analyzed and optimized using a technique based on the combination of an evolutionary heuristic optimization algorithm (genetic algorithm) with the Computer Simulation Technology (CST) Microwave Studio, for WiMAX applications. Next, a topology optimized ultra wideband antenna alongside a compact FSS layer, covering the UWB spectrum of frequencies, are designed and analyzed. The simulation results and measurements obtained are compared with various works in the open literature. Finally, Fabry-Pérot resonator antennas based on the proposed PRS structures, generated and optimized using an automatic synthesis system, based on a VBA link between MATLAB and CST Microwave studio, were designed, analyzed and fabricated. The obtained results are compared with other research in the open literature, where it is clearly indicated that the proposed designs could be potential candidates for high gain and wideband systems in Ku-band and mm-wave applications, such as the 5G.