Microstrip Low Pass Filter with Improved Rejection Bandwidth

Abstract

A novel implementation of microstrip low pass filter is proposed on the EBG structured ground plane. A high rejection bandwidth is achieved by etching the circular shaped EBG pattern on the ground plane. The offset introduced in the EBG pattern further improves the rejection bandwidth. The simulation is performed using the full wave Method of Moments based IE3D simulator. The characteristics of the filter determined in terms of S-parameters depict an improved rejection bandwidth over a much higher range of frequencies.