Circuit for demodulating PSK modulation signals

Details Circuit for demodulating PSK modulation signals Circuit for demodulating PSK modulation signals

1991-07-01

1993-08-31

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

307526, 329307, H03D 318

Patent

active

052415678

ABSTRACT:
In a differential-detection demodulator circuit, a PSK modulated signal is compared with a locally oscillated signal to obtain a phase difference between the two signals, whereupon the phase difference is demodulated. A phase detector circuit of the digital type outputs the phase difference signal. The digital phase comparator circuit compares plural reference signals, which give predetermined delays to the locally oscillated signals having carrier frequencies, with the inputted modulated signals. Preferably, a pulse signal having a phase difference between the inputted modulated signal and the locally oscillated signal is produced, and the pulse width of this pulse signal is measured by a counter. By digitalizing the entire phase comparator, it is possible to realize demodulation with low electrical power consumption and simple circuit construction.

REFERENCES:
patent: 4628271 (1986-12-01), Takayama
patent: 4714892 (1987-12-01), Ishizuka
patent: 4827488 (1989-05-01), Shibano

Affiliated with

Also associated with

Rating

Circuit for demodulating PSK modulation signals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for demodulating PSK modulation signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for demodulating PSK modulation signals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2303625