Test instrument for transmitters

Details Test instrument for transmitters Test instrument for transmitters

1976-10-12

1978-06-20

Griffin, Robert L.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 58B, 324 95, 325 67, H04B 104, H04B 1700

Patent

active

040964418

ABSTRACT:
The herein disclosed test instrument includes an arrangement for measuring the standing wave ratio of a transmitter, antenna combination which comprises a printed circuit board having a first conductive path thereon adapted for connection in series with the energy flowing between a transmitter and its associated antenna, a second conductive path contiguously disposed on the printed circuit board such that energy is electro-magnetically coupled from the first to the second conductive paths; circuit means for sequentially measuring the energy flowing in opposite directions along the second conductive path; and meter means for displaying the ratio of the measured energy. The test instrument further includes a circuit for measuring the transmitter's output power wherein the "loading" of the metering circuit on the transmitter is substantially reduced.

REFERENCES:
patent: 3179884 (1965-04-01), Szajerski
patent: 3848189 (1974-11-01), Pope

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