WO2001082471A8 - Optimal power combining for balanced error correction amplifier - Google Patents

Optimal power combining for balanced error correction amplifier

Info

Publication number
WO2001082471A8
WO2001082471A8 PCT/US2001/012807 US0112807W WO0182471A8 WO 2001082471 A8 WO2001082471 A8 WO 2001082471A8 US 0112807 W US0112807 W US 0112807W WO 0182471 A8 WO0182471 A8 WO 0182471A8
Authority
WO
WIPO (PCT)
Prior art keywords
amplifier
main
signal
error correction
sample
Prior art date
Application number
PCT/US2001/012807
Other languages
French (fr)
Other versions
WO2001082471A1 (en
Inventor
Warren Gutherie
Original Assignee
Netcom Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Netcom Inc filed Critical Netcom Inc
Priority to AU2001255510A priority Critical patent/AU2001255510A1/en
Publication of WO2001082471A1 publication Critical patent/WO2001082471A1/en
Publication of WO2001082471A8 publication Critical patent/WO2001082471A8/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
    • H03F1/3229—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3212—Using a control circuit to adjust amplitude and phase of a signal in a signal path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3215—To increase the output power or efficiency

Abstract

An error correction amplifier (20) includes a main amplifier (30), a second amplifier (58) coupled in a feed-forward arrangement to the main amplifier (30), and a balancing network (38). The main amplifier (30) receives an input signal (IN) and generates an amplified signal (32) having a main component (Gsin) and an error component (N). The balancing network (38) isolates a sample of the amplified signal (32), inverts the sample, and combines the sample with a signal (Sin(2+1/L^2)) to produce the signal (Sin-(N/G)(1+1/L^2)) to be amplified by the second amplifier (58). The second amplifier (58) generates an output signal (60) having a main component (GSin) and an error component (-N/L^2). A summing point (70) combines the output signals from the main amplifier (30) and the second amplifier (58) in an unequal manner such that the error components substantially cancel each other and the main components are added to one another.
PCT/US2001/012807 2000-04-22 2001-04-20 Optimal power combining for balanced error correction amplifier WO2001082471A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001255510A AU2001255510A1 (en) 2000-04-22 2001-04-20 Optimal power combining for balanced error correction amplifier

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US19905800P 2000-04-22 2000-04-22
US60/199,058 2000-04-22
US09/715,587 2000-11-17
US09/715,587 US6348838B1 (en) 1999-04-29 2000-11-17 Optimal power combining for balanced error correction amplifier

Publications (2)

Publication Number Publication Date
WO2001082471A1 WO2001082471A1 (en) 2001-11-01
WO2001082471A8 true WO2001082471A8 (en) 2002-02-21

Family

ID=26894426

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/012807 WO2001082471A1 (en) 2000-04-22 2001-04-20 Optimal power combining for balanced error correction amplifier

Country Status (2)

Country Link
US (1) US6348838B1 (en)
WO (1) WO2001082471A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006012661A1 (en) * 2006-03-20 2007-09-27 Mtu Aero Engines Gmbh Gas turbine engine`s metallic parts e.g. disk, connecting method, involves heating edge regions of connecting surfaces with higher and inside lying range with lower frequency, which is selected in dependence on geometry of surfaces
CN102760930B (en) * 2012-07-18 2015-01-07 深圳市通创通信有限公司 Millimeter wave power synthesis amplifier

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906401A (en) 1974-09-03 1975-09-16 Bell Telephone Labor Inc Feedforward error correction in interferometer modulators
US4379994A (en) 1981-03-16 1983-04-12 The United States Of America As Represented By The Secretary Of The Navy Feed-forward amplifier
JPS60106209A (en) 1983-11-15 1985-06-11 Kokusai Denshin Denwa Co Ltd <Kdd> Microwave power amplifier device
US4595882A (en) 1984-05-30 1986-06-17 Rockwell International Corporation Phase adjusted feedforward error correction
US4583049A (en) 1984-06-15 1986-04-15 Trw Inc. Feed-forward circuit
US4591800A (en) 1984-10-01 1986-05-27 Motorola, Inc. Linear power amplifier feedback improvement
US4879519A (en) 1988-10-31 1989-11-07 American Telephone And Telegraph Company, At&T Bell Labs Predistortion compensated linear amplifier
US4926136A (en) 1988-12-29 1990-05-15 Westinghouse Electric Corp. Power amplifier combiner for improving linearity of an output
GB9009295D0 (en) 1990-04-25 1990-06-20 Kenington Peter B Apparatus and method for reducing distortion in amplification
US5077532A (en) 1990-12-17 1991-12-31 Motorola, Inc. Feed forward distortion minimization circuit
US5304945A (en) 1993-04-19 1994-04-19 At&T Bell Laboratories Low-distortion feed-forward amplifier
US5376899A (en) 1994-02-04 1994-12-27 Pass Laboratories, Inc. Amplifier with gain stages coupled for differential error correction
FR2722350B1 (en) 1994-07-08 1996-08-23 Alcatel Espace METHOD OF LINEARIZATION OF A NON-LINEAR AMPLIFIER, LINEARIZATION CIRCUIT AND AMPLIFIER COMPRISING SUCH A CIRCUIT
US5485120A (en) 1994-07-28 1996-01-16 Aval Communications Inc. Feed-forward power amplifier system with adaptive control and control method
US5444418A (en) 1994-07-29 1995-08-22 Motorola, Inc. Method and apparatus for feedforward power amplifying
US5570063A (en) 1995-05-18 1996-10-29 Spectrian, Inc. RF power amplifier with signal predistortion for improved linearity
US5619168A (en) 1995-08-07 1997-04-08 Lucent Technologies Inc. Distortion creation and reduction circuit
EP0762630A1 (en) 1995-09-08 1997-03-12 AT&T IPM Corp. Low distortion amplifier circuit with improved output power
US5623227A (en) 1995-10-17 1997-04-22 Motorola, Inc. Amplifier circuit and method of controlling an amplifier for use in a radio frequency communication system
JPH09139631A (en) 1995-11-16 1997-05-27 Fujitsu Ltd Feed forward amplifier and base station with feed forward amplifier
US5760646A (en) 1996-03-29 1998-06-02 Spectrian Feed-forward correction loop with adaptive predistortion injection for linearization of RF power amplifier
US5838195A (en) 1996-08-06 1998-11-17 Northrop Grumman Corporation Reduction of second order harmonic distortion in high power TWT amplifiers
US5867064A (en) 1996-08-19 1999-02-02 Motorola, Inc. Method and apparatus for improving intermodulation in a feed-forward amplifier
DE19650388A1 (en) 1996-12-05 1998-06-18 Bosch Gmbh Robert Circuit for linearizing an amplifier
US5874856A (en) 1997-06-30 1999-02-23 Motorola, Inc. Feed forward amplifier
US5912586A (en) 1997-12-23 1999-06-15 Motorola, Inc. Feed forward amplifier with digital intermodulation control
US5977826A (en) 1998-03-13 1999-11-02 Behan; Scott T. Cascaded error correction in a feed forward amplifier
US5963091A (en) 1998-04-01 1999-10-05 Chen; Jiunn-Tsair Article comprising a power amplifier with feed forward linearizer using a RLS parameter tracking algorithm
EP1030441A3 (en) 1999-02-16 2004-03-17 Matsushita Electric Industrial Co., Ltd. Feedforward amplifier

Also Published As

Publication number Publication date
US6348838B1 (en) 2002-02-19
WO2001082471A1 (en) 2001-11-01

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