Frequency discriminator apparatus

Details Frequency discriminator apparatus Frequency discriminator apparatus

1975-11-13

1978-11-28

Griffin, Robert L.

Oscillators

Relaxation oscillators

325349, 331 9, 331 96, 334 16, H04B 116, H03B 308

Patent

active

041278194

ABSTRACT:
A frequency discriminator having a bandwidth variable from a relatively narrow range to a very wide range in which the center frequency is simultaneously tunable over an extremely wide frequency range. The discriminator is insensitive to amplitude variations of the input signal and is capable of demodulating low level signals. The frequency discriminator is particularly useful for microwave frequency applications wherein the basic discriminator element is a ferrimagnetic resonator. The frequency discriminator forms a portion of several preferred embodiments including devices for the frequency control of signal sources, frequency measurement of signal sources, demodulation of frequency modulated signals and frequency tracking control for other ferrimagnetic devices.

REFERENCES:
patent: 3434057 (1969-03-01), Jackman et al.
patent: 3435346 (1969-03-01), Allen et al.
patent: 3541444 (1970-11-01), Mandel
patent: 3787772 (1974-01-01), Sedin
patent: 3839677 (1974-10-01), Sedin
patent: 4032859 (1977-06-01), Ryken

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