Title :
Bandstop filter design using evanescent mode resonators
Author :
Snyder, R.V. ; Sanghoon Shin ; Keck, K.
Author_Institution :
RS Microwave Inc., Butler, NJ, USA
Abstract :
A new bandstop filter design is proposed using evanescent mode cavities consisting of short-circuited lengths of cylindrical waveguide operated below cutoff frequency. The proposed bandstop filter shows a very high Q bandstop response at lower frequencies, unavailable with a lumped element approach, and with smaller physical size than can be achieved with coaxial structures.
Keywords :
Q-factor; UHF filters; band-stop filters; cavity resonator filters; circular waveguides; waveguide filters; 1 GHz; 1.29 GHz; bandstop filter design; center frequency; cutoff frequency; cylindrical waveguide; evanescent mode cavities; evanescent mode resonators; high dielectric loaded coplanar waveguide feed line; notch filter; resonance frequency; short-circuited lengths; very high Q bandstop response; Circuits; Coaxial components; Coplanar waveguides; Cutoff frequency; Dielectric substrates; Feeds; Inductors; Microwave filters; Resonance; Resonator filters;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1212554
