Multi-mode cavity for waveguide filters

Details Multi-mode cavity for waveguide filters Multi-mode cavity for waveguide filters

1996-12-26

1998-10-13

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333212, H01P 1208

Patent

active

058218378

ABSTRACT:
A multi-mode, typically triple-mode, cavity (1), for waveguide band-pass filters is disclosed, which cavity requires no tuning or coupling screws and rounded. The cavity comprises a waveguide element such as an iris (IR1) or a waveguide segment (CR2) arranged in a generically eccentric position with respect to the general development of the cavity and in particular to the main axis (Z) of the same. The cavity may be used to make narrowband filters for satellite communications. A filter comprising cavities (1) of the type described can be designed entirely using an electronic computer and requires no calibration procedure.

REFERENCES:
patent: 3235822 (1966-02-01), De Loach
patent: 4513264 (1985-04-01), Dorey
patent: 4630009 (1986-12-01), Tang
patent: 4734665 (1988-03-01), Rosenberg et al.
Kuhn, "Microwave bandpass filters . . . with 1-dimensional offsets", Circuit theory & applications, vol. 6, No. 1, pp. 13-29, Jan. 1978.

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