Standing wave ratio detecting apparatus

Details Standing wave ratio detecting apparatus Standing wave ratio detecting apparatus

1979-01-22

1981-04-14

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 58A, 324 58B, 455115, G01R 2702, H04B 1700

Patent

active

042622468

ABSTRACT:
A standing wave ratio detecting apparatus comprising a first comparator for comparing a traveling wave detection signal with a sawtooth or triangular wave signal having an amplitude proportional to the traveling wave detection signal to generate a first pulse signal, a generator receiving the first pulse signal to generate the sawtooth or triangular wave signal, a second comparator for comparing the sawtooth or triangular wave signal with a reflected wave detection signal to generate a second pulse signal having a duty cycle representative of the standing wave ratio and a meter device for averaging out the second pulse signal and indicating the averaged value. By this construction determination of the standing wave ratio is facilitated without troublesome operation.

REFERENCES:
patent: 3789197 (1974-01-01), Games
patent: 4041395 (1977-08-01), Hill

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