RF power monitor utilizing bi-directional coupler

Details RF power monitor utilizing bi-directional coupler RF power monitor utilizing bi-directional coupler

1976-01-05

1977-07-05

Rolinec, Rudolph V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With waveguide or long line

324105, 324126, 333 10, G01R 2104, H01P 514

Patent

active

040342891

ABSTRACT:
The coupler inserts in an RF transmission line and produces a pair of DC signals whose level is representative of the magnitude of forward or reverse power flow therethrough.
Power flow is sensed via a pair of non resonant loops, each of which is terminated and oriented such that AC signals, whose amplitudes correspond to the forward or reverse power flow magnitude, are produced. Since the RF signals produced by the loops are dependent on the RF power flow frequency, unique circuitry processes the RF signals and compensates for this frequency dependence whereby the processed AC signals are substantially frequency independent.
Also disclosed are improved rectification circuitry, and a means to compensate the coupler against error due to thermal drift of coupler components.

REFERENCES:
patent: 2416977 (1947-03-01), Brown et al.
patent: 3626290 (1971-12-01), Aslan
patent: 3760271 (1973-09-01), Bach, Jr. et al.
patent: 3829770 (1974-08-01), Stevens

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