Amplifiers – Hum or noise or distortion bucking introduced into signal...
Reexamination Certificate
2007-07-24
2007-07-24
Nguyen, Linh V. (Department: 2819)
Amplifiers
Hum or noise or distortion bucking introduced into signal...
C330S151000
Reexamination Certificate
active
10485141
ABSTRACT:
A hybrid distortion compensation method and apparatus that greatly improves the capability to compensate for non-linear distortion due to a high frequency power amplifier over a wideband in strict conditions of smaller size and reduced power consumption. An adaptive pre-distortion section (14) and a feed forward distortion compensation circuit (30) are connected via a D/A converter (20), an A/D converter (28) and the like, and signals of parts of the feed forward distortion compensation circuit (30) are taken out using a switch circuit (SW), fed back to a digital signal processing system, and processed using highly accurate digital signal processing in a control-monitoring section (60). After an adjustment section (51) makes characteristics of two input signals of the feed forward distortion compensation circuit (30) coincide, feed forward distortion compensation is performed. A sequencer (80) controls the components sequentially.
REFERENCES:
patent: 5489875 (1996-02-01), Cavers
patent: 5760646 (1998-06-01), Belcher et al.
patent: 5870668 (1999-02-01), Takano et al.
patent: 5877653 (1999-03-01), Kim et al.
patent: 5949283 (1999-09-01), Proctor et al.
patent: 6078216 (2000-06-01), Proctor, Jr.
patent: 6118339 (2000-09-01), Gentzler et al.
patent: 6246286 (2001-06-01), Persson
patent: 6266517 (2001-07-01), Fitzpatrick et al.
patent: 6275105 (2001-08-01), Ghannouchi et al.
patent: 6275106 (2001-08-01), Gomez
patent: 6342810 (2002-01-01), Wright et al.
patent: 6396344 (2002-05-01), Gentzler et al.
patent: 6504428 (2003-01-01), Cova et al.
patent: 6522198 (2003-02-01), Ahn
patent: 6711217 (2004-03-01), Jeong
patent: 6734732 (2004-05-01), Cavers
patent: 6774716 (2004-08-01), Suto
patent: 6947711 (2005-09-01), Leyonhjelm
patent: 7058369 (2006-06-01), Wright et al.
patent: 2002/0012404 (2002-01-01), Ahn
patent: 2004/0242180 (2004-12-01), Beach et al.
patent: 2004/0251961 (2004-12-01), Braithwaite
patent: 2005/0068102 (2005-03-01), Hongo et al.
patent: 1154023 (1997-07-01), None
patent: 1191685 (2002-03-01), None
patent: 1193862 (2002-04-01), None
patent: 964780 (1997-03-01), None
patent: 10190361 (1998-07-01), None
patent: 2000312116 (2000-11-01), None
patent: 200276785 (2002-03-01), None
patent: 2002100940 (2002-04-01), None
International Search Report dated Jul. 22, 2003.
3GPP TS25.104 V3.7.0 (Jun. 2001), 3rdGeneration Partnership Project; Technical Specification Group Radio Access Networks; UTRA (BS) FDD; Radio transmission and Reception (Release 1999), pp. 1-41.
Chinese Office Action dated May 27, 2005 with English translation.
3GPP TS25.104 V3.7.0 (Jun. 2001) 3rdGeneration Partnership Project; Technical Specification Group Radio Access Networks; UTRA (BS) FDD; Radio transmission and Reception (Release 1999), pp. 1-41, no month.
Supplementary European Search Report dated Apr. 6, 2006.
Matsushita Electric - Industrial Co., Ltd.
Nguyen Linh V.
Stevens Davis Miller & Mosher LLP
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