Parametric Study of UC-PBG Structure in Terms of Simultaneous AMC and EBG Properties and its Applications in Proximity-coupled Fractal Patch Antenna
作者： MM Fakharian , P Rezaei
DOI: 10.5829/IDOSI.IJE.2012.25.04A.06
关键词: Fractal antenna 、 Bandwidth (signal processing) 、 Physics 、 Acoustics 、 Finite-difference time-domain method 、 Microstrip 、 Frequency band 、 Electronic engineering 、 HFSS 、 Reference antenna 、 Patch antenna
摘要: In this paper, a parametric study of conventional Uniplanar Compact Photonic Band Gap (UC-PBG) structures, with different dimensions, is investigated. The studied structure operates as an Artificial Magnetic Conductor (AMC) in which the performance mainly characterized by resonant frequency and bandwidth. Simulation numerical analysis have been carried out using CST Microwave Studio software, based on Finite Difference Time Domain (FDTD), Ansoft HFSS Element Method (FEM). Results show that dimensions affect AMC\'s performance. increase length width UC-PBG slot will result lower frequencies bandwidth degradation, while band position when branch increased. Furthermore, prototype microstrip line proximity-fed to fractal patch antenna substrate designed simulated. Computed results mounted has over 9.2% wider impedance than same etched grounded dielectric slab characteristics, due in-phase reflection phase structure. Compared reference at 7.2 GHz, back lobe reduced 7.86 dB E plane 7.68 H plane. Cross-polarization level remains below -10 both planes.
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