WO2008099489A1 - Power amplifier - Google Patents

Power amplifier Download PDF

Info

Publication number
WO2008099489A1
WO2008099489A1 PCT/JP2007/052705 JP2007052705W WO2008099489A1 WO 2008099489 A1 WO2008099489 A1 WO 2008099489A1 JP 2007052705 W JP2007052705 W JP 2007052705W WO 2008099489 A1 WO2008099489 A1 WO 2008099489A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
power amplifier
gate
predetermined threshold
envelope signal
Prior art date
Application number
PCT/JP2007/052705
Other languages
French (fr)
Japanese (ja)
Inventor
Tetsuya Kaneko
Original Assignee
Panasonic Corporation
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 Panasonic Corporation filed Critical Panasonic Corporation
Priority to JP2008557947A priority Critical patent/JPWO2008099489A1/en
Priority to PCT/JP2007/052705 priority patent/WO2008099489A1/en
Publication of WO2008099489A1 publication Critical patent/WO2008099489A1/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
    • H03F1/02—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

Provided is a power amplifier of the envelope tracking type capable of reducing generation of nonlinear distortion even in small input while maintaining high efficiency. In the power amplifier, a gate voltage adjusting section (130) has a comparator (131) for comparing the size of a predetermined threshold voltage with that of an envelope signal. If the result of the comparison shows that the amplitude of the envelope signal is smaller than the predetermined threshold voltage, the gate voltage adjusting section (130) switches over so that a voltage (V1) is applied to the gate terminal of a high power amplifier (150). If the amplitude of the envelope signal is not smaller than the predetermined threshold voltage, it switches over so that a voltage (V2) (V1 > V2) is applied to the gate terminal thereof. At this time, the voltage (V1) is determined as a gate voltage that the high power amplifier (150) operates in an AB-class and the voltage (V2) is determined as a voltage that the high power amplifier (150) operates in a C-class.
PCT/JP2007/052705 2007-02-15 2007-02-15 Power amplifier WO2008099489A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2008557947A JPWO2008099489A1 (en) 2007-02-15 2007-02-15 Power amplifier
PCT/JP2007/052705 WO2008099489A1 (en) 2007-02-15 2007-02-15 Power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/052705 WO2008099489A1 (en) 2007-02-15 2007-02-15 Power amplifier

Publications (1)

Publication Number Publication Date
WO2008099489A1 true WO2008099489A1 (en) 2008-08-21

Family

ID=39689748

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/052705 WO2008099489A1 (en) 2007-02-15 2007-02-15 Power amplifier

Country Status (2)

Country Link
JP (1) JPWO2008099489A1 (en)
WO (1) WO2008099489A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012004619A (en) * 2010-06-14 2012-01-05 Mitsubishi Electric Corp High-frequency amplifying apparatus
JP2012253181A (en) * 2011-06-02 2012-12-20 Sumitomo Electric Ind Ltd Semiconductor device
US8536941B2 (en) 2010-12-21 2013-09-17 Fujitsu Limited Amplifying device and method involving envelope signal
CN114696746A (en) * 2020-12-29 2022-07-01 中兴通讯股份有限公司 Radio frequency power amplifier power supply circuit and control method thereof
JP2022155899A (en) * 2021-03-31 2022-10-14 ソフトバンク株式会社 Radio transmission device, base station, terminal device, mobile communication system, fixed radio access system, radio transmission method, and program

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02206904A (en) * 1989-02-07 1990-08-16 Fujitsu Ltd Linear amplifier
JP2004116435A (en) * 2002-09-27 2004-04-15 Hitachi Ltd Control device for automobile
JP2005269202A (en) * 2004-03-18 2005-09-29 Canon Inc Communication device and communication method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320352A (en) * 1980-01-29 1982-03-16 Ford Aerospace & Communications Corp. Input optimized FET bias circuit
FR2708399B1 (en) * 1993-06-30 1995-08-25 Alcatel Telspace Amplifier polarization control system.
JP4691785B2 (en) * 2001-01-10 2011-06-01 ソニー株式会社 Amplifier circuit
JP4388350B2 (en) * 2003-11-19 2009-12-24 富士通株式会社 Distortion suppression circuit
JP2006254345A (en) * 2005-03-14 2006-09-21 Mitsubishi Electric Corp Electric power amplifying device of transmitter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02206904A (en) * 1989-02-07 1990-08-16 Fujitsu Ltd Linear amplifier
JP2004116435A (en) * 2002-09-27 2004-04-15 Hitachi Ltd Control device for automobile
JP2005269202A (en) * 2004-03-18 2005-09-29 Canon Inc Communication device and communication method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012004619A (en) * 2010-06-14 2012-01-05 Mitsubishi Electric Corp High-frequency amplifying apparatus
US8536941B2 (en) 2010-12-21 2013-09-17 Fujitsu Limited Amplifying device and method involving envelope signal
JP2012253181A (en) * 2011-06-02 2012-12-20 Sumitomo Electric Ind Ltd Semiconductor device
CN114696746A (en) * 2020-12-29 2022-07-01 中兴通讯股份有限公司 Radio frequency power amplifier power supply circuit and control method thereof
JP2022155899A (en) * 2021-03-31 2022-10-14 ソフトバンク株式会社 Radio transmission device, base station, terminal device, mobile communication system, fixed radio access system, radio transmission method, and program
JP7364614B2 (en) 2021-03-31 2023-10-18 ソフトバンク株式会社 Wireless transmitting device, base station, terminal device, mobile communication system, fixed wireless access system, wireless transmitting method and program

Also Published As

Publication number Publication date
JPWO2008099489A1 (en) 2010-05-27

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