FM demodulator using multiplier to which delayed and undelayed i

Details FM demodulator using multiplier to which delayed and undelayed i FM demodulator using multiplier to which delayed and undelayed i

1976-09-08

1977-10-18

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

325349, 329137, 329145, H03D 314

Patent

active

040548406

ABSTRACT:
An FM signal demodulator including a multiplier having a pair of input terminals and an output terminal. A signal coupling circuit is connected between a circuit input terminal and one of the input terminals of the multiplier to couple an FM signal to the multiplier, and a delay line and a phase shifter are connected in cascade between the signal input terminal and the other input terminal of the multiplier. A low pass filter is connected to the output terminal of the multiplier to allow the demodulated signal to reach the circuit output terminal.

REFERENCES:
patent: 3387220 (1968-06-01), Lender
patent: 3701030 (1972-10-01), Gocho et al.
Grimbleby et al. "A new high-performance phase-sensitive detector," Journal of Physics E, vol. 4, No. 12, Dec. 1971, pp. 941-944.

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