WO2008117399A1 - Amplifier circuit - Google Patents
Amplifier circuit Download PDFInfo
- Publication number
- WO2008117399A1 WO2008117399A1 PCT/JP2007/056248 JP2007056248W WO2008117399A1 WO 2008117399 A1 WO2008117399 A1 WO 2008117399A1 JP 2007056248 W JP2007056248 W JP 2007056248W WO 2008117399 A1 WO2008117399 A1 WO 2008117399A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power control
- transmission power
- amplifiers
- operate
- caused
- Prior art date
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
- H03F1/0294—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using vector summing of two or more constant amplitude phase-modulated signals
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
An amplifier circuit wherein the memory amount required for holding correction values used in distortion compensation is relatively small and a transmission power control having a wide dynamic range can be performed with high efficiency of power. In this amplifier circuit (100), when a transmission power control value is equal to or greater than a predetermined threshold value, amplifiers (107a,107b) are caused to operate in a saturation range, and the phase difference between two constant envelope signals (S1,S2) or the power supply voltages of the amplifiers (107a,107b) are controlled, thereby performing a transmission power control, while activating a distortion compensating function. When the transmission power control value is less than the threshold value, the amplifiers (107a,107b) are caused to operate in an unsaturation range, and the gains of variable gain parts (106a,106b) are controlled, thereby performing a transmission power control, while halting the distortion compensating function. Therefore, the amplifiers (107a,107b) can be caused to operate with a high efficiency, and a transmission power control having a wide dynamic range can be performed as well as the memory amount required for holding the correction values used in the distortion compensation can be reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2007/056248 WO2008117399A1 (en) | 2007-03-26 | 2007-03-26 | Amplifier circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2007/056248 WO2008117399A1 (en) | 2007-03-26 | 2007-03-26 | Amplifier circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008117399A1 true WO2008117399A1 (en) | 2008-10-02 |
Family
ID=39788142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/056248 WO2008117399A1 (en) | 2007-03-26 | 2007-03-26 | Amplifier circuit |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2008117399A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010053134A1 (en) * | 2008-11-05 | 2010-05-14 | 京セラ株式会社 | Adder, and power combiner, quadrature modulator, quadrature demodulator, power amplifier, transmitter and wireless communicator using same |
JP2012531095A (en) * | 2009-06-18 | 2012-12-06 | アルカテル−ルーセント | High efficiency transmitter for wireless communication |
JP2015533065A (en) * | 2012-10-30 | 2015-11-16 | イーティーエー デバイシズ, インコーポレイテッド | Transmitter architecture and related methods |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003298361A (en) * | 2002-03-29 | 2003-10-17 | Shimada Phys & Chem Ind Co Ltd | Power amplification method and power amplifier |
JP2006314087A (en) * | 2005-04-08 | 2006-11-16 | Matsushita Electric Ind Co Ltd | Amplifier circuit and radio equipment |
-
2007
- 2007-03-26 WO PCT/JP2007/056248 patent/WO2008117399A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003298361A (en) * | 2002-03-29 | 2003-10-17 | Shimada Phys & Chem Ind Co Ltd | Power amplification method and power amplifier |
JP2006314087A (en) * | 2005-04-08 | 2006-11-16 | Matsushita Electric Ind Co Ltd | Amplifier circuit and radio equipment |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010053134A1 (en) * | 2008-11-05 | 2010-05-14 | 京セラ株式会社 | Adder, and power combiner, quadrature modulator, quadrature demodulator, power amplifier, transmitter and wireless communicator using same |
US8396435B2 (en) | 2008-11-05 | 2013-03-12 | Kyocera Corporation | Adder, and power combiner, quadrature modulator, quadrature demodulator, power amplifier, transmitter and wireless communicator using same |
JP2012531095A (en) * | 2009-06-18 | 2012-12-06 | アルカテル−ルーセント | High efficiency transmitter for wireless communication |
JP2015533065A (en) * | 2012-10-30 | 2015-11-16 | イーティーエー デバイシズ, インコーポレイテッド | Transmitter architecture and related methods |
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