High frequency filter assembly for electric instrument

Details High frequency filter assembly for electric instrument High frequency filter assembly for electric instrument

1986-09-26

1988-11-01

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333 12, 333181, 333185, 361303, 361312, H03H 701

Patent

active

047823100

ABSTRACT:
A high frequency filter assembly for an electric instrument including an internal electric circuit element arranged within a casing of metallic conductive material, and a connector mounted on a peripheral wall of the casing for connecting an external electric circuit to the internal electric circuit element. The filter assembly comprises at least a pair of overlapped insulation thin plates to be arranged between the connector and a connection terminal of the circuit element, and an earth electrode strip disposed between the insulation thin plates and being connected to a portion of the casing. One of the insulation thin plates is integrally provided with a first signal electrode strip which has one end for connection to the connector and is associated with the earth electrode strip to form a first plate condenser, and the other insulation thin plate is integrally provided with a second signal electrode strip which is connected structurally in series with the first signal electrode strip for connection to the connection terminal of the circuit element and associated with the earth electrode strip to form a second plate condenser electrically in parallel connection with the first plate condenser.

REFERENCES:
patent: 2558748 (1951-07-01), Haeff
patent: 4203081 (1980-05-01), Braeckelmann
patent: 4589720 (1986-05-01), Aujla et al.
Abstract of Jpn. No. 57-140047 vol. 6, #238, 11/26/82.

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