Pocket size antenna match indicator for VSWR measurement

Details Pocket size antenna match indicator for VSWR measurement Pocket size antenna match indicator for VSWR measurement

1983-06-22

1986-04-01

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 58B, G01R 2700, G01R 2704

Patent

active

045800928

ABSTRACT:
A pocket size antenna match indicator is described having a self contained modulated low level RF signal source which is applied to an antenna or other load under test through a dual directional coupler. Sampled RF reflected signals are detected, filtered and amplified to provide a DC voltage directly proportional to antenna mismatch. Easy to read measurement of VSWR is derived from the DC voltage by means of a dot display driver connected to a LED display.

REFERENCES:
patent: 3031615 (1962-04-01), Chase et al.
patent: 4034289 (1977-07-01), Rozylowicz et al.
patent: 4110685 (1978-08-01), Leenerts
patent: 4196394 (1980-04-01), Adams
patent: 4290009 (1981-09-01), Sanpei et al.
patent: 4479087 (1984-10-01), Althouse
Shurmer, A Direct-Reading Waveguide Standing-Wave Detector for Use at Low Power Levels, Proc. of IEE, vol. 102, No. 2, Part C, Sep. 1955, pp. 176-180.

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