Power control for non-constant envelope modulation

Details Power control for non-constant envelope modulation Power control for non-constant envelope modulation

2007-10-30

2007-10-30

Maung, Nay (Department: 2618)

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

C455S126000, C455S522000, C455S249100, C455S137000

Reexamination Certificate

active

10481726

ABSTRACT:
There is disclosed a method and apparatus for control of a power control loop. The method comprises the steps of: amplifying a non-constant envelope modulation signal to thereby produce an output signal; combining a power level control signal with a signal representing the envelop of modulation; comparing the combined signal to a signal representing the power level of the output signal to thereby produce a comparison signal; and attenuating the amplified signal in dependence on said comparison signal.

REFERENCES:
patent: 5208549 (1993-05-01), Andoh
patent: 5675611 (1997-10-01), Lehtinen et al.
patent: 5697074 (1997-12-01), Makikallio et al.
patent: 6853836 (2005-02-01), Asam et al.
patent: 0 588 424 (1994-03-01), None
patent: 1 211 801 (2002-06-01), None
patent: WO 00/31881 (2000-06-01), None
patent: WO 00/31894 (2000-06-01), None
patent: WO 01/03292 (2001-01-01), None
patent: WO 01/10013 (2001-02-01), None
patent: WO 01/22575 (2001-03-01), None
patent: WO 01/24356 (2001-04-01), None
Asbeck et al, “A Polar Linearisation System for RF Power Amplifiers,” Electronics, Circuits and Systems, 2000, the 7thIEEE International Conference, vol. 1, Dec. 17-20, 2000, pp. 478-481.
Extracts from “RF Power Amplifiers for Wireless Communications,” by Steve C. Cripps, published 1999, ISBN 0-89006-989-1, pp. 251-282.
Extracts from PhD thesis “Linearization of RF Power Amplifiers” by Mark Briffa, Dec. 1996, pp. 21-38.
Paper by Su et al, “An IC for Linearizing RF Power Amplifiers Using Envelope Elimination and Restoration,” IEEE Journal of Solid-State Circuits, vol. 33, Issue 12, Dec. 1998, pp. 2252-2258.
Paper by Kenington et al, “GSM-EDGE High Power Amplifier Utilising Digital Linearization,” IMS' 01 Digest, Phoenix, Arizonia, May 20-25, 2001, pp. 1517-1520.

Affiliated with

Also associated with

Rating

Power control for non-constant envelope modulation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power control for non-constant envelope modulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power control for non-constant envelope modulation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3869267