Electronic arrangement for receiving a modulated carrier signal

Details Electronic arrangement for receiving a modulated carrier signal Electronic arrangement for receiving a modulated carrier signal

1991-05-31

1992-10-20

Pascal, Robert J.

Demodulators

Frequency modulation demodulator

Having specific distortion, noise or other interference...

329306, 329323, 329327, 329353, 329360, H03D 100, H03D 300

Patent

active

051573431

ABSTRACT:
Electronic receive arrangement for receiving a modulated carrier signal, which arrangement comprises a mixer/demodulator driven with the carrier frequency fc, at least one adder included in a closed signal loop, a low-pass filter, and a pulse shaper constituted by a sigma-delta (one-bit) signal converter and driven with the sampling frequency fs and also comprises a digital decimation filter. The signal loop includes the mixer/demodulator so that the modulated carrier signal is applied to the adder and the output signal of the adder is applied to the mixer/demodulator. The signal loop also comprises a second mixer driven with frequency fc, and the frequencies fs and fc present a common multiple.

REFERENCES:
patent: 4233684 (1980-11-01), Eggermont
patent: 5003621 (1991-03-01), Gailus
M. J. Gingell, "Single Sideband Modulation Using Sequence Asymmetric Polyphase Network", Electrical Communication, vol. 48, Nos. 1 and 2, 1973, pp. 21-25.
Van Ginderdeuren et al., "Cordic-Based HiFi Digital FM Demodulator Algorithm for Compact VLSI Implementation", Electronics Letters, vol. 21, Dec. 5, 1985, pp. 1227-1229.
D. K. Weaver, Jr., "A Third Method of Generation & Detection of Signal-Sideband Signals", Proceedings of the IRE, vol. 44, pp. 1703-1705, (1956).

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