Study on Compact UWB Filter Composed of Defected Parallel Plates and Meander Line

摘要

In this study, we propose a compact ultra-wideband bandpass filter that is composed of a pair of defected parallel plates and a meander line. We analyzed the filtering characteristics by using a full-wave EM-simulator Ansoft HFSS Ver. 11 based on the finite element method. The results show that the wide passband from about 2.0 GHz to 11.0 GHz is obtained and attenuation poles are created at both sides of the passband. It is also shown that the flat group delay characteristics are achieved in the wide frequency range.