Improving the bandwidth of high gain Fabry-Perot antenna using EBG substrate
Abstract views: 140 / PDF downloads: 114Keywords:
High-Gain Antenna, Fabry-Perot Antenna, Electromagnetic Band Gap (EBG), High Impedance Surface (HIS).Abstract
In this paper, design of high gain antenna with electromagnetic resonances of Fabry-Perot (FP) cavity is presented. FP Resonator antenna
generally consists of primary radiator backed with a metal ground plane and a partially reflective surface (PRS). FP cavities are mainly used as
energy-focusing elements to enhance the antenna directivity but at the same time leads to bandwidth reduction. This reduction of bandwidth in
FP antenna is compensated by the use of EBG substrate. The proposed structure consists of SRR array that is implemented as a PRS and an
EBG substrate. This antenna is designed to operate at a frequency around 10 GHz. The structure increases the gain from 6.11 dB up to about 12
dB or more and improves the bandwidth 0.82%. For validation of purposes, the antenna is designed and simulated through using of two
different 3D full-wave electromagnetic simulation tools; CST Microwave Studio and Ansoft’s High Frequency Structure Simulator (HFSS).
