GB2379109B - Linearised radio transmitter - Google Patents

Linearised radio transmitter

Info

Publication number
GB2379109B
GB2379109B GB0120307A GB0120307A GB2379109B GB 2379109 B GB2379109 B GB 2379109B GB 0120307 A GB0120307 A GB 0120307A GB 0120307 A GB0120307 A GB 0120307A GB 2379109 B GB2379109 B GB 2379109B
Authority
GB
United Kingdom
Prior art keywords
radio transmitter
linearised
linearised radio
transmitter
radio
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.)
Expired - Fee Related
Application number
GB0120307A
Other versions
GB2379109A (en
GB0120307D0 (en
Inventor
John Michael Reeve
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.)
Aeroflex Cambridge Ltd
Original Assignee
Ubinetics Ltd
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 Ubinetics Ltd filed Critical Ubinetics Ltd
Priority to GB0120307A priority Critical patent/GB2379109B/en
Publication of GB0120307D0 publication Critical patent/GB0120307D0/en
Priority to CN 02816334 priority patent/CN1254911C/en
Priority to PCT/GB2002/003824 priority patent/WO2003019772A1/en
Priority to EP02767602A priority patent/EP1419573A1/en
Publication of GB2379109A publication Critical patent/GB2379109A/en
Application granted granted Critical
Publication of GB2379109B publication Critical patent/GB2379109B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3252—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using multiple parallel paths between input and output
    • 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
    • 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
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • 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
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3294—Acting on the real and imaginary components of the input signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/207—A hybrid coupler being used as power measuring circuit at the output of an amplifier circuit

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
GB0120307A 2001-08-21 2001-08-21 Linearised radio transmitter Expired - Fee Related GB2379109B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB0120307A GB2379109B (en) 2001-08-21 2001-08-21 Linearised radio transmitter
CN 02816334 CN1254911C (en) 2001-08-21 2002-08-21 Linearised radio transmitter
PCT/GB2002/003824 WO2003019772A1 (en) 2001-08-21 2002-08-21 Linearised radio transmitter
EP02767602A EP1419573A1 (en) 2001-08-21 2002-08-21 Linearised radio transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0120307A GB2379109B (en) 2001-08-21 2001-08-21 Linearised radio transmitter

Publications (3)

Publication Number Publication Date
GB0120307D0 GB0120307D0 (en) 2001-10-17
GB2379109A GB2379109A (en) 2003-02-26
GB2379109B true GB2379109B (en) 2005-07-13

Family

ID=9920739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0120307A Expired - Fee Related GB2379109B (en) 2001-08-21 2001-08-21 Linearised radio transmitter

Country Status (4)

Country Link
EP (1) EP1419573A1 (en)
CN (1) CN1254911C (en)
GB (1) GB2379109B (en)
WO (1) WO2003019772A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1499015A1 (en) * 2003-07-17 2005-01-19 Siemens Aktiengesellschaft Circuit and process for linearizing the characteristics of a GSM power amplifier
JP4641715B2 (en) * 2003-11-14 2011-03-02 富士通株式会社 Distortion compensation apparatus and radio base station
US7590190B2 (en) * 2004-11-10 2009-09-15 Powerwave Technologies, Inc. System and method for forward path gain control in a digital predistortion linearized transmitter
JP2006174079A (en) * 2004-12-15 2006-06-29 Sony Corp Audio signal processing method and apparatus
FI20055355A0 (en) * 2005-06-29 2005-06-29 Nokia Corp Method for data processing, pre-distortion arrangement, transmitter, network element and base station
CN101114854B (en) * 2006-07-28 2011-05-18 北京信威通信技术股份有限公司 Linearized control device and method for power amplifier of time division duplex system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992008297A1 (en) * 1990-10-24 1992-05-14 Motorola, Inc. An apparatus and method for varying a signal in a transmitter of a transceiver

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5959499A (en) * 1997-09-30 1999-09-28 Motorola, Inc. Predistortion system and method using analog feedback loop for look-up table training
GB9811382D0 (en) * 1998-05-27 1998-07-22 Nokia Mobile Phones Ltd A transmitter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992008297A1 (en) * 1990-10-24 1992-05-14 Motorola, Inc. An apparatus and method for varying a signal in a transmitter of a transceiver

Also Published As

Publication number Publication date
CN1254911C (en) 2006-05-03
WO2003019772A1 (en) 2003-03-06
EP1419573A1 (en) 2004-05-19
CN1545759A (en) 2004-11-10
GB2379109A (en) 2003-02-26
GB0120307D0 (en) 2001-10-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20080821