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GB2432271B - Linear RF transmitter and method of operation - Google Patents

Linear RF transmitter and method of operation

Info

Publication number
GB2432271B
GB2432271B GB0523247A GB0523247A GB2432271B GB 2432271 B GB2432271 B GB 2432271B GB 0523247 A GB0523247 A GB 0523247A GB 0523247 A GB0523247 A GB 0523247A GB 2432271 B GB2432271 B GB 2432271B
Authority
GB
United Kingdom
Prior art keywords
transmitter
linear
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
GB0523247A
Other versions
GB2432271A (en
GB0523247D0 (en
Inventor
Ben-Ayun Moshe
Ovadia Grossman
Nir Shay
Mark Rozental
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Priority to GB0523247A priority Critical patent/GB2432271B/en
Publication of GB0523247D0 publication Critical patent/GB0523247D0/en
Priority to PCT/US2006/060866 priority patent/WO2007059484A2/en
Priority to TW095142479A priority patent/TW200737864A/en
Publication of GB2432271A publication Critical patent/GB2432271A/en
Application granted granted Critical
Publication of GB2432271B publication Critical patent/GB2432271B/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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H03F1/0216—Continuous control
    • H03F1/0222—Continuous control by using a signal derived from the input signal
    • 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
    • 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • 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
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/321—Use of a microprocessor in an amplifier circuit or its control circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/336—A I/Q, i.e. phase quadrature, modulator or demodulator being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/504—Indexing scheme relating to amplifiers the supply voltage or current being continuously controlled by a controlling signal, e.g. the controlling signal of a transistor implemented as variable resistor in a supply path for, an IC-block showed amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
GB0523247A 2005-11-15 2005-11-15 Linear RF transmitter and method of operation Expired - Fee Related GB2432271B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0523247A GB2432271B (en) 2005-11-15 2005-11-15 Linear RF transmitter and method of operation
PCT/US2006/060866 WO2007059484A2 (en) 2005-11-15 2006-11-14 Linear rf transmitter and method of operation
TW095142479A TW200737864A (en) 2005-11-15 2006-11-15 Linear RF transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0523247A GB2432271B (en) 2005-11-15 2005-11-15 Linear RF transmitter and method of operation

Publications (3)

Publication Number Publication Date
GB0523247D0 GB0523247D0 (en) 2005-12-21
GB2432271A GB2432271A (en) 2007-05-16
GB2432271B true GB2432271B (en) 2007-10-10

Family

ID=35516953

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0523247A Expired - Fee Related GB2432271B (en) 2005-11-15 2005-11-15 Linear RF transmitter and method of operation

Country Status (3)

Country Link
GB (1) GB2432271B (en)
TW (1) TW200737864A (en)
WO (1) WO2007059484A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2466218B (en) * 2008-12-12 2012-02-01 Motorola Solutions Inc Simultaneous supply modulation and circulator elimination with maximum efficiency
EP2663046A1 (en) * 2012-05-07 2013-11-13 Alcatel Lucent Apparatus and method for slew-rate limitation
US11082073B2 (en) 2017-06-05 2021-08-03 Telefonaktiebolaget Lm Ericsson (Publ) Method and controller for controlling power amplifier in radio transmitter as well as radio unit and radio device
CN118858874B (en) * 2024-08-02 2026-01-09 福建星海通信科技有限公司 A device and method for testing forward and reverse nonlinearity of a device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2403086A (en) * 2003-06-17 2004-12-22 Motorola Inc A Cartesian loop amplifier in which the input signal level is reduced when distortion is detected
US20050017801A1 (en) * 2003-07-23 2005-01-27 Andrew Corporation Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter
GB2406985A (en) * 2003-10-07 2005-04-13 Software Radio Technology Ltd An RF transmitter with optimal control of amplifier bias with respect to efficiency and adjacent channel power
JP2005197870A (en) * 2004-01-05 2005-07-21 Fujitsu Ltd Distortion compensation power amplifier

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2967699B2 (en) * 1995-03-06 1999-10-25 日本電気株式会社 Transmission device
US6594595B2 (en) * 2001-04-03 2003-07-15 Advantest Corporation Apparatus for and method of measuring cross-correlation coefficient between signals
US6731694B2 (en) * 2001-08-07 2004-05-04 Motorola, Inc. Isolator eliminator for a linear transmitter
US6819090B1 (en) * 2002-08-16 2004-11-16 Athena Controls, Inc. Line voltage regulator with RMS voltage approximation feedback control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2403086A (en) * 2003-06-17 2004-12-22 Motorola Inc A Cartesian loop amplifier in which the input signal level is reduced when distortion is detected
US20050017801A1 (en) * 2003-07-23 2005-01-27 Andrew Corporation Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter
GB2406985A (en) * 2003-10-07 2005-04-13 Software Radio Technology Ltd An RF transmitter with optimal control of amplifier bias with respect to efficiency and adjacent channel power
JP2005197870A (en) * 2004-01-05 2005-07-21 Fujitsu Ltd Distortion compensation power amplifier

Also Published As

Publication number Publication date
GB2432271A (en) 2007-05-16
TW200737864A (en) 2007-10-01
WO2007059484A3 (en) 2008-07-03
WO2007059484A2 (en) 2007-05-24
GB0523247D0 (en) 2005-12-21

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Legal Events

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

Effective date: 20231115