Demodulators – Frequency shift keying or minimum shift keying demodulator
Patent
1998-06-23
2000-04-04
Lee, Benny
Demodulators
Frequency shift keying or minimum shift keying demodulator
329303, 375324, H03D 300
Patent
active
060466286
ABSTRACT:
In a demodulating device which comprises an orthogonal transforming circuit, an up-converting circuit, a pulse signal producing circuit, and a low-pass filter, the orthogonal transforming circuit orthogonally transforms a received frequency shift keying signal to produce a first base band signal and a second base band signal. A phase converting circuit converts a clock signal from a clock signal producing circuit to produce a first clock signal having a first phase and a second clock signal having a second phase. A first EXOR circuit receives the first base band signal and the first clock signal to produce a first EXOR output signal. A second EXOR circuit receives the second base band signal and the second clock signal to produce a second EXOR output signal. A mixing circuit mixes the first EXOR output signal and the second EXOR output signal to produce and supply an up-converted signal to the pulse signal producing circuit.
REFERENCES:
patent: 5081650 (1992-01-01), Hasegawa et al.
patent: 5373533 (1994-12-01), Hayashihara et al.
patent: 5640428 (1997-06-01), Abe et al.
patent: 5724001 (1998-03-01), Chang
Japanese Office Action dated Jun. 29, 1999, with partial translation.
British Search Report dated Feb. 11, 1999.
Choe Henry
Lee Benny
NEC Corporation
LandOfFree
Demodulating device comprising a small circuit and a small consu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Demodulating device comprising a small circuit and a small consu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Demodulating device comprising a small circuit and a small consu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-369184