GB2418792B - Transmitter efficiency control - Google Patents

Transmitter efficiency control

Info

Publication number
GB2418792B
GB2418792B GB0421745A GB0421745A GB2418792B GB 2418792 B GB2418792 B GB 2418792B GB 0421745 A GB0421745 A GB 0421745A GB 0421745 A GB0421745 A GB 0421745A GB 2418792 B GB2418792 B GB 2418792B
Authority
GB
United Kingdom
Prior art keywords
efficiency control
transmitter efficiency
transmitter
control
efficiency
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
GB0421745A
Other versions
GB0421745D0 (en
GB2418792A (en
Inventor
Surinder Singh Thind
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co 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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority to GB0421745A priority Critical patent/GB2418792B/en
Publication of GB0421745D0 publication Critical patent/GB0421745D0/en
Publication of GB2418792A publication Critical patent/GB2418792A/en
Application granted granted Critical
Publication of GB2418792B publication Critical patent/GB2418792B/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
    • H03F1/0227—Continuous control by using a signal derived from the input signal using supply converters
    • 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
    • H03F1/02—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
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/004—Control by varying the supply voltage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
GB0421745A 2004-09-30 2004-09-30 Transmitter efficiency control Expired - Fee Related GB2418792B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0421745A GB2418792B (en) 2004-09-30 2004-09-30 Transmitter efficiency control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0421745A GB2418792B (en) 2004-09-30 2004-09-30 Transmitter efficiency control

Publications (3)

Publication Number Publication Date
GB0421745D0 GB0421745D0 (en) 2004-11-03
GB2418792A GB2418792A (en) 2006-04-05
GB2418792B true GB2418792B (en) 2008-10-22

Family

ID=33427827

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0421745A Expired - Fee Related GB2418792B (en) 2004-09-30 2004-09-30 Transmitter efficiency control

Country Status (1)

Country Link
GB (1) GB2418792B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7519336B2 (en) * 2006-05-05 2009-04-14 Nokia Corporation Method and arrangement for optimizing efficiency of a power amplifier
GB2446843B (en) 2006-06-30 2011-09-07 Wolfson Microelectronics Plc Amplifier circuit and methods of operation thereof
GB2478458B (en) 2006-12-22 2011-12-07 Wolfson Microelectronics Plc Charge pump circuit and methods of operation thereof
GB2444988B (en) 2006-12-22 2011-07-20 Wolfson Microelectronics Plc Audio amplifier circuit and electronic apparatus including the same
GB2447426B (en) 2006-12-22 2011-07-13 Wolfson Microelectronics Plc Charge pump circuit and methods of operation thereof
GB2444984B (en) 2006-12-22 2011-07-13 Wolfson Microelectronics Plc Charge pump circuit and methods of operation thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5420536A (en) * 1993-03-16 1995-05-30 Victoria University Of Technology Linearized power amplifier
GB2323987A (en) * 1994-01-29 1998-10-07 Motorola Ltd A radio transceiver amplifier with closed loop gain control feedback for a trunked mode and open loop bias feedback for a direct mode
WO2003075452A2 (en) * 2002-03-01 2003-09-12 Sige Semiconductor Inc. Method of adjusting gain and current consumption of a power amplifier circuit while maintaining linearity
US6636112B1 (en) * 1999-07-29 2003-10-21 Tropian, Inc. High-efficiency modulating RF amplifier
US20030228877A1 (en) * 2002-05-27 2003-12-11 Nokia Corporation Method for controlling signal power in transmitter of radio system, and transmitter of radio system
US6694130B2 (en) * 1998-12-29 2004-02-17 Skyworks Solutions, Inc. System and method for dynamically varying operational parameters of an amplifier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5420536A (en) * 1993-03-16 1995-05-30 Victoria University Of Technology Linearized power amplifier
GB2323987A (en) * 1994-01-29 1998-10-07 Motorola Ltd A radio transceiver amplifier with closed loop gain control feedback for a trunked mode and open loop bias feedback for a direct mode
US6694130B2 (en) * 1998-12-29 2004-02-17 Skyworks Solutions, Inc. System and method for dynamically varying operational parameters of an amplifier
US6636112B1 (en) * 1999-07-29 2003-10-21 Tropian, Inc. High-efficiency modulating RF amplifier
WO2003075452A2 (en) * 2002-03-01 2003-09-12 Sige Semiconductor Inc. Method of adjusting gain and current consumption of a power amplifier circuit while maintaining linearity
US20030228877A1 (en) * 2002-05-27 2003-12-11 Nokia Corporation Method for controlling signal power in transmitter of radio system, and transmitter of radio system

Also Published As

Publication number Publication date
GB0421745D0 (en) 2004-11-03
GB2418792A (en) 2006-04-05

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Legal Events

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

Effective date: 20140930