Ka-band slot-fed higher order-mode low-loss Fabry-Perot filters

Author

McCleary, James ; Li, Ming-yi ; Chang, Kai

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

42

Issue

7

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

1423

Lastpage

1426

Abstract

Low-loss bandpass filters consisting of Fabry-Perot resonators excited by slots which couple to higher order resonator modes are demonstrated. For close reflector spacings, the slots efficiently couple power from rectangular waveguide to the TEM₄₀₀ and TEM₃₀₀ modes of the resonator. At Ka-band the filters have insertion losses less than 1 dB in general and less than 0.5 dB in some cases. The unloaded Q values of the filters range from 1500 to 3000. The filters are mechanically tunable over a 25% bandwidth

Keywords

Q-factor; band-pass filters; cavity resonators; losses; microwave filters; passive filters; tuning; waveguide components; 1 dB; 27 to 36 GHz; Fabry-Perot filters; Fabry-Perot resonators; Ka-band; TEM₃₀₀ mode; TEM₄₀₀ mode; bandpass filters; higher order-mode; low-loss type; mechanically tunable filters; reflector spacings; slot-fed filters; Band pass filters; Dielectrics; Fabry-Perot; Frequency; Insertion loss; Optical coupling; Oscillators; Rectangular waveguides; Resonator filters; Submillimeter wave filters;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.299740

Filename

299740