JP2012049858A5 - - Google Patents
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- JP2012049858A5 JP2012049858A5 JP2010190556A JP2010190556A JP2012049858A5 JP 2012049858 A5 JP2012049858 A5 JP 2012049858A5 JP 2010190556 A JP2010190556 A JP 2010190556A JP 2010190556 A JP2010190556 A JP 2010190556A JP 2012049858 A5 JP2012049858 A5 JP 2012049858A5
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- JP
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- Prior art keywords
- amplifier
- circuit
- outputs
- input
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- Prior art date
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- 238000007493 shaping process Methods 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 2
Claims (2)
前記ドライブ増幅器は、
入力信号を増幅する増幅素子と、
入力電力レベルを検出する検波回路と、
入力された補正信号に基づいて、前記増幅素子にドレイン電圧を出力する電源回路と、
予め記憶された情報に基づいて、前記検出された入力電力レベルに対応する補正信号を前記電源回路に出力する波形整形回路とを備えたことを特徴とする電力増幅器。 A carrier amplifier circuit having a first amplifier element operating in class AB and a peak amplifier circuit having a second amplifier element operating in class B or class C, and outputs of the carrier amplifier circuit and the peak amplifier circuit A Doherty amplifier that synthesizes and outputs a power amplifier, and a drive amplifier provided at an input stage of the Doherty amplifier,
The drive amplifier is
An amplifying element for amplifying an input signal;
A detection circuit for detecting the input power level;
A power supply circuit that outputs a drain voltage to the amplifying element based on the input correction signal;
A power amplifier comprising: a waveform shaping circuit that outputs a correction signal corresponding to the detected input power level to the power supply circuit based on information stored in advance.
前記ドライブ増幅器は、The drive amplifier is
入力信号を増幅する増幅素子と、An amplifying element for amplifying an input signal;
入力電力レベルを検出する検波回路と、A detection circuit for detecting the input power level;
入力された補正信号に基づいて、前記増幅素子にドレイン電圧を出力する電源回路と、A power supply circuit that outputs a drain voltage to the amplifying element based on the input correction signal;
予め記憶された情報に基づいて、前記検出された入力電力レベルに対応する補正信号を出力する波形整形回路とを備え、A waveform shaping circuit that outputs a correction signal corresponding to the detected input power level based on information stored in advance;
前記波形整形回路は、前記増幅素子が飽和に近い状態で動作し、且つ、入力信号に対する前記ドライブ増幅器のゲイン特性及び位相特性が、前記ドハティ増幅器で発生するゲイン歪及び位相歪の一方又は両方を補償するような特性となるよう、前記電源回路に補正されたドレイン電圧を出力させるための補正信号を出力することを特徴とする電力増幅器。The waveform shaping circuit operates in a state where the amplifying element is close to saturation, and the gain characteristic and the phase characteristic of the drive amplifier with respect to an input signal are one or both of gain distortion and phase distortion generated in the Doherty amplifier. A power amplifier that outputs a correction signal for causing the power supply circuit to output a corrected drain voltage so as to have a characteristic that compensates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010190556A JP5522843B2 (en) | 2010-08-27 | 2010-08-27 | Power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010190556A JP5522843B2 (en) | 2010-08-27 | 2010-08-27 | Power amplifier |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2012049858A JP2012049858A (en) | 2012-03-08 |
| JP2012049858A5 true JP2012049858A5 (en) | 2013-10-03 |
| JP5522843B2 JP5522843B2 (en) | 2014-06-18 |
Family
ID=45904213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010190556A Active JP5522843B2 (en) | 2010-08-27 | 2010-08-27 | Power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5522843B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6264778B2 (en) * | 2013-08-15 | 2018-01-24 | 富士通株式会社 | Wireless communication circuit and wireless communication device |
| JP2021166376A (en) * | 2020-04-07 | 2021-10-14 | 株式会社村田製作所 | Power amplification module |
| US11929721B2 (en) | 2020-04-07 | 2024-03-12 | Murata Manufacturing Co., Ltd. | Power amplifier module |
| CN114400975B (en) * | 2021-12-15 | 2022-09-27 | 陕西亚成微电子股份有限公司 | A power amplifier circuit and design method based on envelope tracking technology |
| CN114285378B (en) * | 2021-12-15 | 2022-09-27 | 陕西亚成微电子股份有限公司 | Power amplification circuit based on envelope tracking technology and Doherty framework and design method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0787303B2 (en) * | 1989-12-27 | 1995-09-20 | 三菱電機株式会社 | High frequency amplifier |
| JP2005269440A (en) * | 2004-03-19 | 2005-09-29 | Matsushita Electric Ind Co Ltd | Polar modulation transmitter and polar modulation method |
| JP2007019570A (en) * | 2005-07-05 | 2007-01-25 | Hitachi Kokusai Electric Inc | Doherty amplifier circuit |
| JP4792273B2 (en) * | 2005-10-18 | 2011-10-12 | 株式会社日立国際電気 | amplifier |
| WO2008012898A1 (en) * | 2006-07-27 | 2008-01-31 | Panasonic Corporation | Power amplifying apparatus |
| JP2008125044A (en) * | 2006-10-17 | 2008-05-29 | Hitachi Kokusai Electric Inc | amplifier |
| JP5397973B2 (en) * | 2008-02-27 | 2014-01-22 | 日本電気株式会社 | Power amplifier |
-
2010
- 2010-08-27 JP JP2010190556A patent/JP5522843B2/en active Active
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