Pulse or digital communications – Testing – Phase error or phase jitter
Reexamination Certificate
2006-02-28
2006-02-28
Fan, Chieh M. (Department: 2638)
Pulse or digital communications
Testing
Phase error or phase jitter
C356S450000
Reexamination Certificate
active
07006562
ABSTRACT:
A phase demodulator is used for measuring a phase difference between a phase-modulated test signal and a phase-modulated reference signal having fixed carrier frequencies. The phase demodulator includes an amplitude control device for adjusting amplitudes of the test and reference signals. A differential amplifier receives amplitude-adjusted test and reference signals from the amplitude control device, obtains an intensity difference between the amplitude-adjusted test and reference signals, and amplifies the intensity difference to generate an amplitude-modulated output. An amplitude demodulator demodulates the amplitude-modulated output to obtain an output that is related to the phase difference.
REFERENCES:
patent: 3793592 (1974-02-01), Matonak et al.
patent: 4339726 (1982-07-01), Miura
patent: 4559499 (1985-12-01), Bursztejn et al.
patent: 4842408 (1989-06-01), Yoshii et al.
patent: 4888558 (1989-12-01), Hereikson
patent: 5052051 (1991-09-01), Naito et al.
patent: 5295013 (1994-03-01), Ono
patent: 5473457 (1995-12-01), Ono
patent: 5486919 (1996-01-01), Tsuji et al.
patent: 5861952 (1999-01-01), Tsuji et al.
patent: 5923706 (1999-07-01), Marz
patent: 6018391 (2000-01-01), Yoshida
Chou Chien
Fan Chieh M.
Perilla Jason M
LandOfFree
Phase demodulator, phase difference detector, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Phase demodulator, phase difference detector, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase demodulator, phase difference detector, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3639945