Bridge for measuring the reflection coefficient

Details Bridge for measuring the reflection coefficient Bridge for measuring the reflection coefficient

1991-07-03

1992-09-22

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Distributive type parameters

324648, G01R 2728

Patent

active

051500639

ABSTRACT:
In a reflection-coefficient bridge, the voltage drop across a neutral arm of the bridge is supplied to the indicator via a coaxial cable. The center conductor of the coaxial cable is coupled to the one connecting point of the neutral arm of the bridge while the outer conductor thereof is coupled to the other connecting point thereof. The coaxial cable and a parallel-connected line portion constitute a balanced converter or balun. Both the coaxial cable and the line portion are wound onto at least one ferrite core. A d.c. voltage is fed to a test object, which is connected to the bridge by way of a coaxial line, through a compensating winding wound on at least one of said ferrite cores to the end of the line portion which is r.f. coupled to the frame.

REFERENCES:
patent: 3227953 (1966-01-01), Cerveny
patent: 3860218 (1974-03-01), Shekel
patent: 4962359 (1990-10-01), Dunsmore
Siemens Aktiengesellschaft, "Funk-Entstoer-Bauelemente", 1977/78.
Rohde & Schwarz GmbH & Co. K.G. SWR Bridge ZRB 2.

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