Carrier recovery based demodulation
AssigneeKoninklijke Philips Electronics N.V.
InventorJohannes Nieuwenburg
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Abstract
A demodulator which is arranged to demodulate a first signal with the aid of a second signal, comprises a first bandpass (30) filter arranged to recover the first signal (36) from a received signal (10) and a second bandpass filter (32) arranged to recover the second signal (30) from the received signal (10). Wherein the passband of the second bandpass filter (32) is substantially narrower than the passband of the first bandpass filter (30).
Claims13
Demodulator arranged to demodulate a first signal with the aid of a second signal, the demodulator comprising:
- a first bandpass (30) filter arranged to recover the first signal (36) from a received signal (10);
- and
- a second bandpass filter (32) arranged to recover the second signal (36) from a received signal (10);
- in which the passband of the second bandpass filter (32) is substantially narrower than the passband of the first bandpass filter (30).
Apparatus (88) comprising a demodulator (82), the demodulator being arranged to demodulate a first signal (36) with the aid of a second signal (38), the demodulator comprising:
- a first bandpass filter (30) arranged to recover the first signal (36) from a received signal (10);
- and
- a second bandpass filter (32) arranged to recover the second signal (38) from the received signal (10);
- in which the passband of the second bandpass filter (32) is substantially narrower than the passband of the first bandpass filter (30).
Method for demodulating a first signal with the aid of a second signal the method comprising the steps of:
- using a first bandpass filter (30) for recovering the first signal (36) from a received signal (10);
- using a second bandpass filter (32) having a substantially narrower passband than the first bandpass filter (30), for recovering the second signal (38) from the received signal (10).
Dependencies are inferred from the claim text.