Band-pass filter having two loop-shaped electrodes

Details Band-pass filter having two loop-shaped electrodes Band-pass filter having two loop-shaped electrodes

1993-08-26

1995-03-21

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333185, 333202, H03H 700

Patent

active

054000009

ABSTRACT:
Two coil electrode patterns are formed on one surface of a plate containing a dielectric material. These coil electrode patterns are formed in a loop shape, and disposed in a magnetically connected state with each other. Input/output terminal patterns and earth terminal patterns are drawn out from the coil electrode patterns toward edges on different sides of the plate. The input/output terminal pattern and the earth terminal pattern of one coil electrode pattern are disposed at a selected distance from each other so as to provide a predetermined impedance. An earth electrode pattern is formed opposite the coil electrode patterns with the plate between them. Earth terminal patterns are connected to the earth electrode pattern. The earth terminal patterns of the earth electrode pattern are connected to the earth terminal patterns of the coil electrode patterns. A trimming electrode may be formed for adjusting the passing band frequency of the band-pass filter optionally.

REFERENCES:
patent: 4894629 (1990-01-01), Okamura et al.
patent: 5075650 (1991-12-01), Okamura et al.

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