Band-pass filter comprising series coupled split gap resonators

Details Band-pass filter comprising series coupled split gap resonators Band-pass filter comprising series coupled split gap resonators

1998-05-27

2000-10-10

Lee, Benny

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333219, 333 99S, 505210, 505701, 505866, H01P 1203, H01B 1202

Patent

active

06130591&

ABSTRACT:
Herein disclosed is a band-pass filter for a radio wave having a wavelength range of a high frequency, such as a microwave and a milliwave. The band-pass filter comprises: a dielectric substrate; input and output terminals; and a plurality of conductive strip line resonators being capable of resonating with a predetermined wavelength. Each of the strip line resonators has two ends and bent line extending from one end to the other end with a predetermined length corresponding to the wavelength. The one end and the other end are placed face to face with each other to provide a gap therebetween. In the band-pass filter, the plurality as arranged on the dielectric substrate in series and spaced apart from each other at predetermined intervals along a predetermined position line and coupled with each other through the inductive and capacitive coupling to transfer the signal between the resonators one after another. Each of the adjoining resonators has a predetermined intensity of the coupling between them in accordance with a relationship between the positions of the gaps of the adjoining resonators. As a result, the band-pass filter can be miniaturized as regulating a desired intensity of coupling between resonators.

REFERENCES:
patent: 5055809 (1991-10-01), Sagawa et al.
patent: 5888942 (1999-03-01), Matthaei

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