Title :
Mode-selective negative coupling for implementing multiple attenuation poles in evanescent-mode waveguide filters
Author :
Iguchi, Kenichi ; Tsuji, Mineo ; Shigesawa, H.
Author_Institution :
Dept. of Electron., Doshisha Univ., Kyoto, Japan
Abstract :
This paper presents interesting improvements on evanescent-mode-waveguide bandpass filters reported by the authors at the 1994 IEEE International Microwave Symposium. Those improvements are now successful for newly introducing both the mode-selective negative coupling and the L-angled corner coupling scheme. Experimental results that we took prove the effectiveness of our improvements.<>
Keywords :
band-pass filters; electromagnetic wave absorption; microwave filters; pole assignment; rectangular waveguides; waveguide couplers; waveguide filters; L-angled corner coupling; bandpass filters; evanescent-mode waveguide filters; mode-selective negative coupling; multiple attenuation poles; Attenuation; Band pass filters; Bifurcation; Cutoff frequency; Filtering theory; Impedance; Insertion loss; Inverters; Microwave filters; Passband;
Conference_Titel :
Microwave Symposium Digest, 1995., IEEE MTT-S International
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-2581-8
DOI :
10.1109/MWSYM.1995.406034
