EP1346473A4 - Feed-forward amplifier loop control utilizing if signal processing - Google Patents

Feed-forward amplifier loop control utilizing if signal processing

Info

Publication number
EP1346473A4
EP1346473A4 EP01991548A EP01991548A EP1346473A4 EP 1346473 A4 EP1346473 A4 EP 1346473A4 EP 01991548 A EP01991548 A EP 01991548A EP 01991548 A EP01991548 A EP 01991548A EP 1346473 A4 EP1346473 A4 EP 1346473A4
Authority
EP
European Patent Office
Prior art keywords
feed
signal processing
loop control
forward amplifier
control utilizing
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP01991548A
Other languages
German (de)
French (fr)
Other versions
EP1346473A2 (en
Inventor
Charles Gentzler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paradigm Wireless Systems Inc
Original Assignee
Paradigm Wireless Systems 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 Paradigm Wireless Systems Inc filed Critical Paradigm Wireless Systems Inc
Publication of EP1346473A2 publication Critical patent/EP1346473A2/en
Publication of EP1346473A4 publication Critical patent/EP1346473A4/en
Withdrawn legal-status Critical Current

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
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
EP01991548A 2000-12-22 2001-12-21 Feed-forward amplifier loop control utilizing if signal processing Withdrawn EP1346473A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US25766100P 2000-12-22 2000-12-22
US257661P 2000-12-22
PCT/US2001/050336 WO2002052717A2 (en) 2000-12-22 2001-12-21 Feed-forward amplifier loop control utilizing if signal processing

Publications (2)

Publication Number Publication Date
EP1346473A2 EP1346473A2 (en) 2003-09-24
EP1346473A4 true EP1346473A4 (en) 2004-08-04

Family

ID=22977213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01991548A Withdrawn EP1346473A4 (en) 2000-12-22 2001-12-21 Feed-forward amplifier loop control utilizing if signal processing

Country Status (5)

Country Link
EP (1) EP1346473A4 (en)
KR (1) KR20030090616A (en)
CN (1) CN1483242A (en)
TW (1) TW525344B (en)
WO (2) WO2002052717A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100449938C (en) * 2002-07-05 2009-01-07 中兴通讯股份有限公司 Error loop self-adaptive cancellation control method for feedforward linear power amplifier
US7313370B2 (en) 2002-12-27 2007-12-25 Nokia Siemens Networks Oy Intermodulation product cancellation in communications
US7756493B2 (en) * 2005-04-05 2010-07-13 Powerwave Technologies, Inc. Feed forward amplifier system and method using the pilot frequency from a positive feedback pilot generation and detection circuit to improve second loop convergence
US20090196133A1 (en) * 2008-02-04 2009-08-06 Chia-Wei Liang Signal processing apparatus for optical disc and method thereof
CA3025396A1 (en) * 2016-06-10 2017-12-14 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system
CN107395163A (en) * 2017-07-10 2017-11-24 东南大学 The analog delay line circuit of Digital Circuit Control

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5999048A (en) * 1998-01-13 1999-12-07 Lucent Technologies Inc. Method and apparatus for spread spectrum pilot extraction for RF amplifiers
EP0982850A1 (en) * 1998-08-20 2000-03-01 Lucent Technologies Inc. Method and apparatus for adjusting pilot signal relative to input signal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5768699A (en) * 1995-10-20 1998-06-16 Aml Communications, Inc. Amplifier with detuned test signal cancellation for improved wide-band frequency response
US5977826A (en) * 1998-03-13 1999-11-02 Behan; Scott T. Cascaded error correction in a feed forward amplifier
US6169450B1 (en) * 1998-11-13 2001-01-02 Powerwave Technologies, Inc. Feed forward compensation using phase and time modulation
US6275106B1 (en) * 2000-02-25 2001-08-14 Spectrian Corporation Spectral distortion monitor for controlling pre-distortion and feed-forward linearization of rf power amplifier
US6359508B1 (en) * 2000-08-17 2002-03-19 Spectrian Corporation Distortion detection apparatus for controlling predistortion, carrier cancellation and feed-forward cancellation in linear RF power amplifiers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5999048A (en) * 1998-01-13 1999-12-07 Lucent Technologies Inc. Method and apparatus for spread spectrum pilot extraction for RF amplifiers
EP0982850A1 (en) * 1998-08-20 2000-03-01 Lucent Technologies Inc. Method and apparatus for adjusting pilot signal relative to input signal

Also Published As

Publication number Publication date
WO2002052717A2 (en) 2002-07-04
TW525344B (en) 2003-03-21
WO2002052718A2 (en) 2002-07-04
KR20030090616A (en) 2003-11-28
EP1346473A2 (en) 2003-09-24
CN1483242A (en) 2004-03-17
WO2002052717A3 (en) 2003-04-03

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 20030711

AK Designated contracting states

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Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PARADIGM WIRELESS SYSTEMS, INC.

RBV Designated contracting states (corrected)

Designated state(s): DE GB

A4 Supplementary search report drawn up and despatched

Effective date: 20040617

RIC1 Information provided on ipc code assigned before grant

Ipc: 7H 03F 1/32 B

Ipc: 7H 03F 1/26 B

Ipc: 7H 03F 1/00 B

Ipc: 7H 03F 3/66 A

STAA Information on the status of an ep patent application or granted ep patent

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