Device for monitoring the performance of a transmitter

Details Device for monitoring the performance of a transmitter Device for monitoring the performance of a transmitter

1979-04-24

1981-03-17

Britton, Howard W.

Telecommunications

Transmitter

Measuring, testing, or monitoring of transmitter

455 67, 455117, 324142, H04B 1700

Patent

active

042571235

ABSTRACT:
A device for monitoring the performance of a transmitter, comprising a first input connected to receive a signal representative of transmitter output current, a second input connected to receive a signal representative of transmitter output voltage, a multiplier, a comparator connected to the output of the multiplier, and a switch controllable either to connect the first and second inputs to the multiplier such that the multiplier output is representative of the transmitter output power, or to connect one of the two inputs to the multiplier and the other to the comparator and to connect the comparator output to the multiplier such that the comparator remains in balance and the comparator output is representative of the transmitter output impedance. The first input may be connected directly to the multiplier and the second input can be selectively connected to either the multiplier or the comparator by the switching means.

REFERENCES:
patent: 3919643 (1975-11-01), Templin
patent: 4023104 (1977-05-01), Rheinfelder
patent: 4048564 (1977-09-01), Gleeson, Jr.
patent: 4072900 (1978-02-01), Ray
patent: 4096441 (1978-06-01), Schwartz
DC Measurement Circuit, The Radio Amateur's Handbook, pp. 528-529, 1971.
An In-Line RF Wattmeter, The Radio Amateur's Handbook, pp. 554-555, 1971.
The Operational Amplifier, Engineering Electronics, by Ryder, McGraw-Hill Book Company, Inc., 1957, pp. 226-231.

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