FSK or FM burst signal generating apparatus

Details FSK or FM burst signal generating apparatus FSK or FM burst signal generating apparatus

1985-03-26

1987-11-10

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 68, 332 37D, 455116, 455126, H04L 2549

Patent

active

047062622

ABSTRACT:
A burst signal generating apparatus and related method includes a modulator circuit for modulating a carrier wave of an intermediate frequency signal with a modulating signal. The output of the modulator having a carrier wave frequency is converted to a radio frequency which is amplitude controlled in response to a burst control signal. The carrier wave of the intermediate frequency is switched in response to a burst control signal. Thus, a carrier wave of the radio frequency signal has a desired envelope, permitting ready suppression of the carrier wave during pauses between burst signals.

REFERENCES:
patent: 2808569 (1957-10-01), Morrison
patent: 3649918 (1972-03-01), Freedman et al.
patent: 3662290 (1972-05-01), Elliott
patent: 3667049 (1972-05-01), Ostroff et al.
patent: 4090138 (1978-05-01), Voorman et al.
patent: 4485478 (1984-11-01), Takada

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