Transfer impedance testing fixture for electromagnetic wave shie

Details Transfer impedance testing fixture for electromagnetic wave shie Transfer impedance testing fixture for electromagnetic wave shie

1990-02-21

1991-10-29

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Parameter related to the reproduction or fidelity of a...

174 35MS, G01R 2700

Patent

active

050618997

ABSTRACT:
A testing fixture for testing a transfer impedance of an electromagnetic wave shielding material including a pair of coaxial reducers opposed to each other, each of the coaxial reducers including a cylindrical outer conductor and an inner conductor disposed therein. Each of the outer conductors is provided with a flange at the outer side for engaging the pair of coaxial reducers. Contacting parts are positioned at an end of the opposing outer conductors. Outer connectors are positoned at the other end of the opposing outer conductors. Each of the inner conductors includes head parts positioned at the inside portions thereof and inner connectors positioned at the outside portions thereof. The contacting parts of the outer conductors and the head parts of the inner conductors support the electromagnetic wave shielding material. The outer connectors of the outer conductors and the inner connectors of the inner conductors couple coaxial cable to the testing fixture. Inner contacts are provided between the head parts and the inner connectors in at least one of the inner conductors so that the inner contacts are slidably engaged against the head part to ensure a reliable test measurement.

REFERENCES:
patent: 2446195 (1948-08-01), Shive
patent: 2462106 (1949-02-01), Kram
patent: 3839672 (1974-10-01), Anderson
patent: 3952245 (1976-04-01), Miller
patent: 4281284 (1981-07-01), Stutz et al.

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