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On the Design of Effective EBG Structures to Model Highly Efficient Rectangular Patch Antenna for Wireless Applications

The paper deals with relative analysis of radiation parameters of various rectangular patch antennas with quarter wave feed line. Star shaped and fan shaped Electromagnetic Band Gap (EBG) are incorporated separately on base plane of each antenna. Resonant frequency apprehended for the designed antennas is 5.25 GHz. The proposed fan shaped EBG based antenna exhibits a wide bandwidth of 244 MHz covering wireless applications like IEEE 802.11a Wireless Local Area Network (WLAN) (5.125–5.395 GHz) and High Performance Local Area Network type 1 (HIPERLAN/1) (5.150 GHz– 5.350 GHz). The antenna also covers a well portion of Worldwide interoperability for Microwave Access (Wi-MAX) (5.25-5.85GHz) with comparatively healthy gain of 7.15 dB and noteworthy radiation efficiency. Size reduction of patch with the installation of EBG structures has also been brought forward in this work. The design and simulation has been carried out using FDTD method based transient solver of CST MWS software.