Spectrum analyzers

Details Spectrum analyzers Spectrum analyzers

1984-03-19

1986-02-04

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

364485, 324 79R, G01R 2316

Patent

active

045688788

ABSTRACT:
Spurious responses generated by operation of a spectrum analyzer are eliminated from the analyzer's display by selecting a feature of the displayed signal for testing, adjusting the analyzer controls to display the feature of interest at the center of the screen and with a predetermined span, adjusting the second L.O. frequency by a predetermined amount, and comparing the amplitude of the signal in the analyzer's storage location corresponding to a point on the screen at a predetermined position different from the center of the screen with the amplitude of the signal previously in the storage location corresponding to the center of the screen. If the comparison does not yield substantial equality, the selected feature is eliminated from the display.

REFERENCES:
patent: 3634760 (1972-01-01), Murtin
patent: 3876946 (1975-04-01), LaClair et al.
patent: 3913013 (1975-10-01), Barley
patent: 3978403 (1976-08-01), Mansfield
patent: 3984770 (1976-10-01), Chu
patent: 3992666 (1976-11-01), Edwards
patent: 4317206 (1982-02-01), Nossen

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