Signal detector

Details Signal detector Signal detector

1984-02-16

1986-10-28

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

455243, G01R 2316

Patent

active

046201475

ABSTRACT:
A signal detector identifies a desired frequency component having the greatest amplitude in an input signal containing other frequency components of smaller amplitude such as spurious noise, etc. This allows measuring for instance the frequency of the desired frequency component. The envelope of an intermediate frequency signal corresponding to the desired frequency component is set to be above a desired level in a single sweep of a local oscillator by comparing the envelope with a predetermined value for controlling the attenuation of the input signal. After the attenuation is thusly set, only the desired frequency component has an envelope larger than the predetermined value, so that the desired frequency component is easily identified thereby in the next sweep.

REFERENCES:
patent: 2283523 (1942-05-01), White
patent: 3124746 (1964-03-01), Strathman
patent: 3452278 (1969-06-01), Myers
patent: 3605014 (1971-09-01), McCracken
patent: 4186351 (1980-01-01), Brefini

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