JP2012114529A - 増幅装置 - Google Patents
増幅装置 Download PDFInfo
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- JP2012114529A JP2012114529A JP2010259700A JP2010259700A JP2012114529A JP 2012114529 A JP2012114529 A JP 2012114529A JP 2010259700 A JP2010259700 A JP 2010259700A JP 2010259700 A JP2010259700 A JP 2010259700A JP 2012114529 A JP2012114529 A JP 2012114529A
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- 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
-
- 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
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/102—A non-specified detector of a signal envelope being used in an amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
- H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
- H03F2201/3224—Predistortion being done for compensating memory effects
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
- H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
- H03F2201/3233—Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Amplifiers (AREA)
Abstract
【解決手段】上記課題を解決するため、増幅装置は、ドレイン電圧の電圧値に基づいて入力信号を増幅し送信信号を出力する第1増幅部と、該入力信号の電力振幅と該第1増幅部から出力される該送信信号の電力振幅との差分値に基づいて該入力信号の電力振幅を補正する歪補償部と、補正前の入力信号の電力振幅に基づいて該ドレイン電圧を生成するドレイン電圧制御部と、該差分値に基づいて該ドレイン電圧を補正するドレイン電圧補正部を有する。
【選択図】図1
Description
2 ベースバンド信号発生装置
3 S/P変換器
4 増幅装置
5 DAC
6 直交変調部
7 電力増幅部
8 方向性結合部
9 アンテナ
10 ドレイン電圧制御部
11 ダウンコンバータ
12 ADC
13 歪補償部
14 ドレイン電圧補正部
15 ENV抽出部
16 制御信号生成部
17 DVC
18 結合部
19、20 遅延調整部
21 差分演算器
22 演算回路
23 アドレス生成部
24 LUT
25 乗算部
26 アドレス生成部
27 演算回路
28 補正制御信号生成部
29 補正用DVC
Claims (4)
- ドレイン電圧の電圧値に基づいて入力信号を増幅し送信信号を出力する第1増幅部と、
該入力信号の電力振幅と該第1増幅部から出力される該送信信号の電力振幅との差分値に基づいて該入力信号の電力振幅を補正する歪補償部と、
補正前の入力信号の電力振幅に基づいて該ドレイン電圧を生成するドレイン電圧制御部と、
該差分値に基づいて該ドレイン電圧を補正するドレイン電圧補正部と
を有することを特徴とする増幅装置。 - 該ドレイン電圧補正部は
該入力信号の電力振幅値を出力するアドレス生成部と、
該差分値に基づいて該ドレイン電圧を補正するための補正係数を演算する演算部と、
該演算部で演算された該補正係数を演算時の該差分値に対応する電力振幅値と共に記憶し、該アドレス生成部から出力される電力振幅値に応じて該補正係数を出力する補正制御信号生成部と、
該補正制御信号生成部から出力された該補正係数を増幅し該ドレイン電圧を補正する補正値を生成する第2増幅部と
を有することを特徴とする請求項1に記載の増幅装置。 - 該ドレイン電圧補正部は、該差分値が所定値以下になるまで歪補償処理を実行した後、該ドレイン電圧の補正処理を開始することを特徴とする、請求項1に記載の増幅装置。
- 該第2増幅部の増幅度は該ドレイン電圧制御部の増幅度よりも小さいことを特徴とする、請求項2に記載の増幅装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010259700A JP5742186B2 (ja) | 2010-11-22 | 2010-11-22 | 増幅装置 |
US13/234,285 US8558616B2 (en) | 2010-11-22 | 2011-09-16 | Amplifying apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010259700A JP5742186B2 (ja) | 2010-11-22 | 2010-11-22 | 増幅装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012114529A true JP2012114529A (ja) | 2012-06-14 |
JP5742186B2 JP5742186B2 (ja) | 2015-07-01 |
Family
ID=46063802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2010259700A Expired - Fee Related JP5742186B2 (ja) | 2010-11-22 | 2010-11-22 | 増幅装置 |
Country Status (2)
Country | Link |
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US (1) | US8558616B2 (ja) |
JP (1) | JP5742186B2 (ja) |
Cited By (2)
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JP2015535668A (ja) * | 2012-11-27 | 2015-12-14 | イーティーエー デバイシズ, インコーポレイテッド | マルチレベル電力増幅器システムのための線形化回路および方法 |
US10658981B2 (en) | 2012-10-30 | 2020-05-19 | Eta Devices, Inc. | Linearization circuits and methods for multilevel power amplifier systems |
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US9247496B2 (en) | 2011-05-05 | 2016-01-26 | Rf Micro Devices, Inc. | Power loop control based envelope tracking |
US9379667B2 (en) | 2011-05-05 | 2016-06-28 | Rf Micro Devices, Inc. | Multiple power supply input parallel amplifier based envelope tracking |
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2010
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-
2011
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Patent Citations (3)
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10658981B2 (en) | 2012-10-30 | 2020-05-19 | Eta Devices, Inc. | Linearization circuits and methods for multilevel power amplifier systems |
JP2015535668A (ja) * | 2012-11-27 | 2015-12-14 | イーティーエー デバイシズ, インコーポレイテッド | マルチレベル電力増幅器システムのための線形化回路および方法 |
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Publication number | Publication date |
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US8558616B2 (en) | 2013-10-15 |
US20120126898A1 (en) | 2012-05-24 |
JP5742186B2 (ja) | 2015-07-01 |
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