Frequency discriminators

Details Frequency discriminators Frequency discriminators

1978-04-17

1979-04-17

Kominski, John

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329103, 330264, H03D 308

Patent

active

041503384

ABSTRACT:
An input signal comprising a carrier wave whose frequency may vary is applied to two complementary conductivity type transistors. Two resonant circuits, one tuned to a frequency slightly higher than and the other tuned to a frequency slightly lower than that of the nominal center frequency of the carrier wave are coupled between the respective drain electrodes of these transistors and a circuit node. The voltages developed across these resonant circuits are detected and the detection components subtracted from one another to obtain the circuit output signal.

REFERENCES:
patent: 2984791 (1961-05-01), Chaser
patent: 3392341 (1968-07-01), Burns
patent: 3437941 (1969-04-01), Leary
patent: 3676801 (1972-07-01), Musa
patent: 3725822 (1973-04-01), Eaton, Jr.
patent: 3935546 (1976-01-01), Morozumi et al.
patent: 4027268 (1977-05-01), Brown
patent: 4032851 (1977-06-01), Hoover

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