Coherent oscillator

Details Coherent oscillator Coherent oscillator

1985-03-13

1986-07-15

LaRoche, Eugene R.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329104, 329122, 331 12, 331 14, 331 17, 331 25, 343 5AF, 375 81, 375 94, 375120, H03D 318

Patent

active

046008896

ABSTRACT:
A coherent oscillator circuit which samples a signal responsive to phase and frequency of a transmitted pulse of radio frequency energy in an acquisition mode, and regenerates a signal corresponding to the sampled phase and frequency in a save mode is disclosed. A storage element performs the sampling in a relative fast, open loop manner during the acquiring mode. Then, during the save mode a phase locked loop forms which locks when a loop oscillator outputs a signal which corresponds to the sampled signal. The coherent oscillator forms a portion of a demodulator for a coherent-on-receive radar.

REFERENCES:
patent: 4063188 (1977-12-01), Mawhinney
patent: 4095224 (1978-06-01), Dounce et al.
patent: 4101844 (1978-07-01), Malone
patent: 4162459 (1979-07-01), Schartman
patent: 4204173 (1980-05-01), Aschwanden
patent: 4389594 (1983-06-01), Conciauro et al.

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