U-shaped microwave and millimeter wave resonator filter

Details U-shaped microwave and millimeter wave resonator filter U-shaped microwave and millimeter wave resonator filter

2007-12-04

2007-12-04

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S08100R, C333S135000, C333S208000, C333S239000, C333S249000

Reexamination Certificate

active

11135930

ABSTRACT:
A filter including a body on which a waveguide groove, whose one surface is open, is formed in a U-shape and a plurarity of inductive resonant windows are provided along a longitudinal direction of the waveguide groove at a predetermined interval in the waveguide groove; and a cover being provided on a top surface of the body so as to cover the surface being open, wherein the plurality of inductive resonant windows are provided in such a manner that a cavity, which is enclosed by two of the plurality of inductive resonant windows being adjacent, the body and cover, resonates at a predetermined frequency and passes a electromagnetic wave in a predetermined frequency band and wherein one end of the U-shaped waveguide groove is an input terminal and other end is an output terminal, and the input terminal and output terminal are formed on a same surface.

REFERENCES:
patent: 5608363 (1997-03-01), Cameron et al.
patent: 6181224 (2001-01-01), Glinder
patent: 6191670 (2001-02-01), Nguyen
patent: 6710678 (2004-03-01), Thormar
patent: 6876277 (2005-04-01), Cooper
patent: 1294502 (1972-11-01), None
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patent: 2003209406 (2003-07-01), None
patent: 2004-147001 (2004-05-01), None
*Patent Abstracts of Japan, Publication No. 2004-147001, Band Pass Filter, published May 20, 2004.

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