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WO2008099464A1 - Power amplifier - Google Patents

Power amplifier Download PDF

Info

Publication number
WO2008099464A1
WO2008099464A1 PCT/JP2007/052504 JP2007052504W WO2008099464A1 WO 2008099464 A1 WO2008099464 A1 WO 2008099464A1 JP 2007052504 W JP2007052504 W JP 2007052504W WO 2008099464 A1 WO2008099464 A1 WO 2008099464A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
band
amplifiers
amplitude
power amplifier
Prior art date
Application number
PCT/JP2007/052504
Other languages
French (fr)
Japanese (ja)
Inventor
Shiro Masumoto
Hitomaro Tougou
Shinji Ookawa
Tsutomu Hibino
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 PCT/JP2007/052504 priority Critical patent/WO2008099464A1/en
Publication of WO2008099464A1 publication Critical patent/WO2008099464A1/en

Links

Classifications

    • 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
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several 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
    • H03F1/0277—Selecting one or more amplifiers from a plurality of amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/72—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • H03F2203/7215—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal the gated amplifier being switched on or off by a switch at the input of the amplifier

Landscapes

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

Abstract

A power amplifier capable of amplifying a signal whose signal band changes while improving a decrease in power efficiency even if the signal band changes scalably. A power amplifier (100) comprises amplitude amplifiers (101, 102) either of which is lower in the power efficiency because of having different amplifiable frequency bands and, at the same time, broader amplifiable frequency bands. A control unit (104) estimates the signal band of an envelope signal on the basis of band information on a baseband signal previously notified from the system side, selects either one of the amplitude amplifiers capable of amplifying the estimated signal band of the envelope signal from the amplitude amplifiers (101, 102), and further selects either one of the amplitude amplifiers having the lowest amplifiable frequency band out of the selected amplifiers to supply the envelope signal to the selected amplitude amplifier at the timing at which the signal band of the envelope signal switches.
PCT/JP2007/052504 2007-02-13 2007-02-13 Power amplifier WO2008099464A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/052504 WO2008099464A1 (en) 2007-02-13 2007-02-13 Power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/052504 WO2008099464A1 (en) 2007-02-13 2007-02-13 Power amplifier

Publications (1)

Publication Number Publication Date
WO2008099464A1 true WO2008099464A1 (en) 2008-08-21

Family

ID=39689723

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/052504 WO2008099464A1 (en) 2007-02-13 2007-02-13 Power amplifier

Country Status (1)

Country Link
WO (1) WO2008099464A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011148582A1 (en) * 2010-05-27 2011-12-01 パナソニック株式会社 Transmission circuit, transmission device, and transmission method
WO2014131849A1 (en) * 2013-02-28 2014-09-04 Thales Signal amplification system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6182511A (en) * 1984-09-29 1986-04-26 Toshiba Corp Frequency characteristic switching type difrerential amplifier
JPH01137710A (en) * 1987-11-24 1989-05-30 Sumitomo Electric Ind Ltd wideband amplifier
JPH04129309A (en) * 1990-09-19 1992-04-30 Matsushita Electric Ind Co Ltd Amplifier circuit
JP2000349574A (en) * 1999-04-01 2000-12-15 Nippon Telegr & Teleph Corp <Ntt> High output power amplifier
JP2001267864A (en) * 2000-03-22 2001-09-28 Nippon Telegr & Teleph Corp <Ntt> Multi-band high frequency amplifier circuit
JP2001519612A (en) * 1997-10-06 2001-10-23 モトローラ・インコーポレイテッド High frequency broadband power amplifier
JP2004364068A (en) * 2003-06-06 2004-12-24 Nippon Telegr & Teleph Corp <Ntt> Variable frequency band amplifier

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6182511A (en) * 1984-09-29 1986-04-26 Toshiba Corp Frequency characteristic switching type difrerential amplifier
JPH01137710A (en) * 1987-11-24 1989-05-30 Sumitomo Electric Ind Ltd wideband amplifier
JPH04129309A (en) * 1990-09-19 1992-04-30 Matsushita Electric Ind Co Ltd Amplifier circuit
JP2001519612A (en) * 1997-10-06 2001-10-23 モトローラ・インコーポレイテッド High frequency broadband power amplifier
JP2000349574A (en) * 1999-04-01 2000-12-15 Nippon Telegr & Teleph Corp <Ntt> High output power amplifier
JP2001267864A (en) * 2000-03-22 2001-09-28 Nippon Telegr & Teleph Corp <Ntt> Multi-band high frequency amplifier circuit
JP2004364068A (en) * 2003-06-06 2004-12-24 Nippon Telegr & Teleph Corp <Ntt> Variable frequency band amplifier

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011148582A1 (en) * 2010-05-27 2011-12-01 パナソニック株式会社 Transmission circuit, transmission device, and transmission method
US8653902B2 (en) 2010-05-27 2014-02-18 Panasonic Corporation Transmission circuit, communication apparatus, and transmission method
WO2014131849A1 (en) * 2013-02-28 2014-09-04 Thales Signal amplification system
US20150372649A1 (en) * 2013-02-28 2015-12-24 Thales Signal amplification system
US9667197B2 (en) 2013-02-28 2017-05-30 Thales Signal amplification system

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