Design and analysis of micro strip circular ring band stop filter

Abstract

A Microstrip circular ring band stop filter has been designed by using An-soft HFSS. This filter has five controllable stopbands at different frequencies 5.2GHz, 7.5GHz, 8.9GHz, 11.4GHz, 12.5GHz respectively. The return loss of the band stop filter are-37.1499,-25.0593,-32.1480,-22.9698 and-33.3195 dB while the insertion loss of the band stop filter are-0.5600,-0.4747,-0.6096,-.05885 and-0.6745 dB at the separate stop bands. This Filter is designed by using RT/Duroid 6002 with a thickness of 0.508mm. Band stop channels are structured from numerous points of view, yet we are utilizing micro strip because of the least assembling expense and weight.