Radio frequency signals analyzer

Details Radio frequency signals analyzer Radio frequency signals analyzer

1977-09-01

1981-02-03

Ng, Jin F.

Telecommunications

Transmitter

Measuring, testing, or monitoring of transmitter

324 76R, 324 78Z, 329124, H04B 102, H04B 1700

Patent

active

042492572

ABSTRACT:
An analyzer for analyzing radio frequency signals from an FM/PM transmitter ithout prior knowledge of the transmitting frequency. The RF signal is sampled and fed to a mixer where it is mixed with the output from a comb generator having a PRF equal to the transmitter channel spacing. The signal out of the mixer is filtered to remove all but the desired frequency components. The filtered signal is fed to a frequency discriminator which provides a demodulated form of the transmitted RF signal and is fed to various parameter indicators.

REFERENCES:
patent: 2309481 (1943-01-01), Summerhayes, Jr.
patent: 3487313 (1969-12-01), Cushman et al.
patent: 3649909 (1972-03-01), Ort et al.
patent: 3914693 (1975-10-01), Ohlen
patent: 3992670 (1976-11-01), Gittins
patent: 4047121 (1977-09-01), Campbell

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