ULTRA-NARROW BAND BAND-PASS FILTER USING OPEN LOOP RESONATOR

摘要

An ultra-narrow band band-pass filter with Square open loop resonator (SOLR) is reported in this article. The designed OLR cell demonstrates compact size, broad band-stop and good slow-wave effect. An ultra-narrow band band-pass filter, incorporated with three SOLR cells, is simulated and measured to show low-insertion loss and high-selectivity. Good agreements between simulation and experiment are achieved.