Programmable digital detector for the demodulation of angle modu

Details Programmable digital detector for the demodulation of angle modu Programmable digital detector for the demodulation of angle modu

1980-09-18

1983-01-11

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

307519, 328140, 329107, 329126, 329137, 329145, 375 80, 375 96, H03D 302, H04L 2714

Patent

active

043684343

ABSTRACT:
In modem circuitry in which an angle modulated carrier signal is clipped and demodulated, and the demodulated signal is filtered and compared with a threshold value to produce an output signal, the invention features, in one aspect, a delay line whose length and shifting frequency are both programmable and, in another aspect, the combination of a differential detector, having a programmable delay line and a digital filter, having a programmable sampling frequency.

REFERENCES:
patent: 3571712 (1971-03-01), Hellwarth et al.
patent: 3656064 (1972-04-01), Giles et al.
patent: 3778727 (1973-12-01), Williams
patent: 3938052 (1976-02-01), Glasson et al.
G. D. Jones, Jr., Digital Frequency Discriminator, vol. 13, No. 11, Apr. 1971, pp. 3421-3422.

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