VSWR meter arrangement with a display output having a linear sca

Details VSWR meter arrangement with a display output having a linear sca VSWR meter arrangement with a display output having a linear sca

1989-08-25

1991-01-29

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

324646, 455115, G01R 704

Patent

active

049889435

ABSTRACT:
A VSWR meter arrangement with a linear scale. The VSWR display is made linear by inputting the V.sub.forward and V.sub.reverse signals to a first op amp-based circuit to provide a first output=K(V.sub.f -V.sub.r). The signals are also input to a second op amp-based circuit to provide a second output=V.sub.f +V.sub.r. The first output is then coupled to the V.sub.reference input of a conventional voltmeter. The second output is then coupled to the V.sub.signal input of the voltmeter. The voltmeter's display output will then indicate the VSWR as a linear percentage of scale.

REFERENCES:
patent: 3870957 (1975-03-01), Straw
patent: 4041395 (1977-08-01), Hill
patent: 4110685 (1978-08-01), Leenerts
patent: 4262246 (1981-04-01), Fujii
patent: 4479087 (1984-10-01), Althouse

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