Telecommunications – Transmitter and receiver at same station – With frequency stabilization
Patent
1998-12-08
2000-10-24
Nguyen, Lee
Telecommunications
Transmitter and receiver at same station
With frequency stabilization
455 23, 455 42, 455 47, 455 75, 4551651, 4551803, 455260, H04L 700, H03L 706, H04B 140
Patent
active
061379956
ABSTRACT:
An integrated transceiver circuit (10) includes a single side-band mixer (12) and a phase locked loop (30). The phase locked loop (30) includes a phase detector (32) coupled to a voltage controlled oscillator (36) via a summing circuit (33) and a low pass filter (34). A feedback signal from the voltage controlled oscillator (36) is transferred to the phase detector (32) through a counter (38). Either a phase modulation signal or a frequency modulation signal are inputs of summing circuit (33) and modulate the transmitter carrier signal generated by the voltage controlled oscillator (36). The carrier signal generated at an output terminal (40) of the transmitter tracks the frequency of the local oscillator signal that is supplied at an input terminal of the single side-band mixer (12) in the receiver.
REFERENCES:
patent: 3944925 (1976-03-01), De Laune
patent: 5019785 (1991-05-01), Fognini et al.
patent: 5159631 (1992-10-01), Quan et al.
patent: 5606731 (1997-02-01), Pace et al.
patent: 5727019 (1998-03-01), Tatsumi
patent: 5745843 (1998-04-01), Wetters et al.
patent: 5757921 (1998-05-01), Okanobu et al.
patent: 5794119 (1998-08-01), Evans et al.
patent: 5794131 (1998-08-01), Cairns
Durec Jeffrey C.
Lovelace David Kevin
Martinez Anthony M.
Motorola Inc.
Nguyen Lee
Nguyen Simon
Parker Lanny L.
LandOfFree
Circuit and method of generating a phase locked loop signal havi 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 and method of generating a phase locked loop signal havi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit and method of generating a phase locked loop signal havi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1974220