Communications – electrical: acoustic wave systems and devices – Transponders – Sonobuoys and sonobuoy systems
Patent
1984-06-20
1987-04-21
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Transponders
Sonobuoys and sonobuoy systems
455112, 455119, H04B 700
Patent
active
046601821
ABSTRACT:
A programmable phase-locked loop frequency synthesizer for a multi-channel onobuoy transmitter is disclosed. The phase-locked loop, including a counter/divider utilizing variable modulus prescaling techniques, is modulated at its voltage-controlled oscillator (VCO) by an external signal which is preemphasized by a compensation network in order to correct for the roll-off characteristic response of the loop below its natural frequency.
REFERENCES:
patent: 3701088 (1972-10-01), Hasse et al.
patent: 3860874 (1975-01-01), Malone et al.
patent: 4068198 (1978-01-01), Otto
patent: 4114110 (1978-09-01), Nossen
patent: 4259744 (1981-03-01), Junod et al.
patent: 4494090 (1985-01-01), Popek et al.
patent: 4501019 (1985-02-01), Matsukura et al.
Bates Albert M.
Junod Michael T.
Sandford, Jr. Wayne H.
Beers Robert F.
Hansen Henry
Pihulic Daniel T.
Tarcza Thomas H.
The Unites States of America as represented by the Secretary of
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