Demodulators – Amplitude modulation demodulator – Having specific distortion – noise or other interference...
Patent
1977-04-22
1978-10-17
Grimm, Siegfried H.
Demodulators
Amplitude modulation demodulator
Having specific distortion, noise or other interference...
329104, 329109, 329145, H03D 102, H03K 902
Patent
active
041211650
ABSTRACT:
A digital demodulator of data signals transmitted by linear amplitude modulation of a carrier, sampled under the control of clock pulses CK1, comprises an interpolating unit UIN including a tapped delay line TDL whose outputs carry, at a given instant, respective signal samples received during different clock cycles. These signal samples are fed to a transversal filter FIN also receiving two sets of interpolation coefficients a.sub.k, b.sub.k read out from respective memory sections ME1, ME2. The signal samples from the several delay-line taps are multiplied in filter FIN by the two sets of coefficients a.sub.k and b.sub.k, under the control of a pulse train CK2 and another pulse train CK3 of the same cadence but phase-shifted with reference to the former, and the two sets of resulting products are respectively summed in a digital adder SM and alternately read out to a phase corrector CJ recovering the phase coherence of the demodulated baseband signal.
REFERENCES:
patent: 4035735 (1977-07-01), Akashi et al.
Dogliotti Renato
Mazzei Umberto
Mengali Umberto
CSELT - Centro Studi e Laboratori Telecomunicazioni S.P.A.
Grimm Siegfried H.
Ross Karl F.
LandOfFree
Digital demodulator with interpolation for linearly amplitude-mo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital demodulator with interpolation for linearly amplitude-mo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital demodulator with interpolation for linearly amplitude-mo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-378261