DocumentCode
2677344
Title
Improved Selectivity in Cylindrical TE / sub 011/ Filters by TE/ sub 211/ TE/ sub311/ Mode Control
Author
Kreinheder, D.E. ; Lingren, T.D.
fYear
1982
fDate
15-17 June 1982
Firstpage
396
Lastpage
398
Abstract
A new method is presented for the design of low loss cylindrical TE/sub 011/ mode resonators whereby transmission nulls can be placed near the TE/sub 011/ resonance by controlling the TE/sub 211/ and TE/sub 311/ modes that are naturally excited in the same resonator. The frequency of the nulls are controlled by the angular offset of the sidewall coupling apertures and the relative amplitude of the TE/sub 011/ mode compared with the TE/sub 211/ and TE/sub 311/ modes. It is also shown that a lumped constant circuit model can be used to accurately represent the multimode response of the resonator.
Keywords
Apertures; Control systems; Couplings; Microwave filters; Propagation losses; Resonance; Resonant frequency; Resonator filters; Shape control; Tellurium;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Symposium Digest, 1982 IEEE MTT-S International
Conference_Location
Dallas, TX, USA
ISSN
0149-645X
Type
conf
DOI
10.1109/MWSYM.1982.1130734
Filename
1130734
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