Automatic impedance adjusting apparatus for microwave load and a

Details Automatic impedance adjusting apparatus for microwave load and a Automatic impedance adjusting apparatus for microwave load and a

1990-01-29

1992-01-07

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Distributive type parameters

324637, G01R 2704

Patent

active

050795074

ABSTRACT:
There are disclosed an automatic microwave impedance adjusting apparatus for a microwave load connected to a microwave oscillator through a microwave transmission line, and an automatic microwave impedance adjusting method therefor. In the apparatus and method, there is measured either an impedance seen looking toward a microwave load at a predetermined reference point of a microwave transmission line connected between a microwave oscillator and the microwave load or a reflection coefficient thereat by detecting a voltage standing wave of a microwave propagating on the microwave transmission line. Thereafter, a controller controls variable impedance means mounted on the microwave load side of the reference point on the microwave transmission line responsive to the value measured at the first step, so as to adjust the impedance seen looking toward the microwave load to a predteremined value.

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patent: 4866346 (1989-09-01), Gaudreau et al.
patent: 4897281 (1990-01-01), Arai et al.

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