Programable frequency acoustic wave discriminator

Details Programable frequency acoustic wave discriminator Programable frequency acoustic wave discriminator

1977-09-20

1978-09-19

Kominski, John

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

331107A, 331179, H03B 304

Patent

active

041157443

ABSTRACT:
An acoustic wave discriminator comprises an acoustic wave delay line having an input transducer and a plurality of output transducer separately connectable to a phase sensitive detector. This detector measures the phase difference between input and output transducers and provides an output for controlling the frequency of a voltage controlled oscillator. A plurality of different frequencies of the oscillator is obtained by connecting different output transducers of the discriminator to the phase sensitive detector.

REFERENCES:
patent: 2791694 (1957-04-01), Groenendyke
patent: 3582540 (1971-06-01), Adler
patent: 3649928 (1972-03-01), Rieder et al.
patent: 3852681 (1974-12-01), Underhill
patent: 3936765 (1976-02-01), Maines
patent: 3962652 (1976-06-01), Zarin et al.
Microwaves, Jul. 1969, "Digital Tuning Imposes Will on Cavity Oscillators".

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