Spectrum analyzer

Details Spectrum analyzer Spectrum analyzer

1981-10-06

1984-05-29

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

324 77H, 324 83A, 324 83R, G01R 2316

Patent

active

044517823

ABSTRACT:
In a spectrum analyzer, an intermediate-frequency oscillator and the outputs from a sweep oscillator are frequency mixed to obtain a measuring signal, which is provided to a device under test. The intermediate-frequency signal and the output from the intermediate-frequency oscillator are supplied to a phase detector to detect a phase difference between them. A signal representing the detected phase difference and the output from a detector are selectively applied by a switch to a display.

REFERENCES:
patent: 3986113 (1976-10-01), Vifian
patent: 4325023 (1982-04-01), Zirwick

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