Dual directional bridge and balun used as reflectometer test set

Details Dual directional bridge and balun used as reflectometer test set Dual directional bridge and balun used as reflectometer test set

1989-06-29

1990-10-09

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Distributive type parameters

324637, 324642, 324646, 324648, G01R 2728, G01N 2200

Patent

active

049623591

ABSTRACT:
A test set for use in measuring S-parameters with a network analyzer includes a first directional bridge, a second directional bridge and a single balun with two outputs mounted in an RF housing. A test signal from an RF signal source is transmitted through the test set to a device under test. The first directional bridge separates a signal from the device under test and the test signal, and provides the signal from the device under test to a coupled port. The second directional bridge separates the test signal and the signal from the device under test and provides the test signal to a reference port. The balun includes a coaxial transmission line with its outer conductor grounded at an intermediate location to define first and second balun sections. Ferrite beads are mounted on each of the balun sections. The ends of the first and second balun sections are coupled to the first and second directional bridges, respectively.

REFERENCES:
patent: 3800218 (1974-03-01), Shekel
patent: 4495807 (1985-01-01), Field et al.
patent: 4588970 (1986-05-01), Donecker et al.

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