JP4252458B2 - ポータブル端末機の電力増幅装置 - Google Patents
ポータブル端末機の電力増幅装置 Download PDFInfo
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- JP4252458B2 JP4252458B2 JP2003565065A JP2003565065A JP4252458B2 JP 4252458 B2 JP4252458 B2 JP 4252458B2 JP 2003565065 A JP2003565065 A JP 2003565065A JP 2003565065 A JP2003565065 A JP 2003565065A JP 4252458 B2 JP4252458 B2 JP 4252458B2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- 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
- H03F1/0216—Continuous control
- H03F1/0233—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply
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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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
-
- 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
-
- 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
- H03F1/0288—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
-
- 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
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- 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
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/198—A hybrid coupler being used as coupling circuit between stages of an amplifier circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/423—Amplifier output adaptation especially for transmission line coupling purposes, e.g. impedance adaptation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/543—A transmission line being used as coupling element between two amplifying stages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/045—Circuits with power amplifiers with means for improving efficiency
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Lock And Its Accessories (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Transmitters (AREA)
Description
従来のポータブル端末機において、ポータブル端末機を構成するシステム全体で消費する全電力のうち、その大部分の電力はRF(Radio Frequency)電力増幅装置で消費される。このようにRF電力増幅装置の低い效率特性はシステム全体の效率特性を大きく低下させ、したがって通話時間を制限することになる。
前記のようなドハーティモード電力増幅装置は理論的には高い效率を維持するすべての出力電力領域で線形的に動作するようになる。
要約すれば、従来技術におけるドハーティモード電力増幅装置ではデバイスの線形特性を予測し難く、補助増幅器を−B級または−C級のように低い直流電流領域で動作させるため、高い線形特性を期待できなくなる問題点がある。
さらに、バイパススイッチング電力増幅装置では用いられる必要のある多数のスイッチによって装置を大型化し、また装置のコスト型を招来するという問題がある
デジタル回路部(160)は包絡線検出部(150)から印加された出力電力の大きさが低い出力電力領域(Q)を脱するかどうかを比較判断して、判断結果に応じて制御信号を電圧制御部(170)に印加する。
また、電圧制御部(170)はデジタル回路部からの入力制御信号に基づいて補助増幅器(130)に印加される入力電圧の大きさを制御する。
また、本件発明によれば、補助増幅器の入力電圧のみを制御するから電力増幅装置を簡単に構成することができるし、電力増幅装置を小型化して低コスト化を実現できる。
Claims (9)
- 主増幅器と補助増幅器とを有するポータブル端末機の電力増幅装置であって、
前記主増幅器と補助増幅器の前段に構成され、前記主増幅器の出力電力の位相と前記補助増幅器の出力電力の位相とが前記装置の出力段で互いに一致するように位相差を補償する位相差補償手段と、
前記主増幅器の出力電力と前記補助増幅器の出力電力が印加され、それらの出力電力を前記装置の出力段に伝送する出力整合部と、
前記装置の出力段に伝送される出力電力の大きさを検出し、該出力電力が前記装置に要求される非線形特性の基準値(R)を満たす低電力領域の大きさを有している場合は、前記装置がドハーティモードで動作するように前記補助増幅器のバイアス入力電圧を制御し、前記出力電力が前記低電力領域を脱する大きさを有している場合は、前記出力電力が前記基準値(R)を満足する非線形特性を示すように前記補助増幅器のバイアス入力電圧を引き上げて、前記補助増幅器の動作領域(クラス)を切り替える電圧制御手段と、
を備えて構成されることを特徴とするポータブル端末機の電力増幅装置。 - 前記位相差補償手段は、前記主増幅器と前記補助増幅器に一定な入力電力を分配し、互いの干渉を最小化させて、前記補助増幅器の入力電力が前記主増幅器の入力電力より90゜遅延になるように信号を伝達する3dBハイブリッド結合器によって構成されることを特徴とする請求項1記載のポータブル端末機の電力増幅装置。
- 前記3dBハイブリッド結合器が集中素子で構成されることを特徴とする請求項2記載のポータブル端末機の電力増幅装置。
- 前記3dBハイブリッド結合器はLTCC技法で構成されることを特徴とする請求項2記載のポータブル端末機の電力増幅装置。
- 前記位相差補償手段は、前記装置の入力段と前記補助増幅器の入力端の間に接続され、前記補助増幅器に印加される信号を前記主増幅器で印加される信号より90゜遅延させるようにする位相差補償部を含み、前記位相差補償部は一つの送信ラインで構成されることを特徴とする請求項1記載のポータブル端末機の電力増幅装置。
- 前記位相差補償手段は、前記装置の入力段と前記補助増幅器の入力端の間に接続され、前記補助増幅器に印加される信号を前記主増幅器で印加される信号より90゜遅延させるようにする位相差補償部を含み、前記位相差補償部は集中素子で構成されることを特徴とする請求項1記載のポータブル端末機の電力増幅装置。
- 前記出力整合部は集中素子で構成されることを特徴とする請求項1記載のポータブル端末機の電力増幅装置。
- 前記出力整合部はLTCC技法で構成されることを特徴とする請求項1記載のポータブル端末機の電力増幅装置。
- 前記電圧制御手段は、
前記出力整合部から装置の出力段に伝送される出力電力の大きさを検出する包絡線検出部と、
前記包絡線検出部によって検出された出力電力の大きさが前記低電力領域から逸脱しているかどうかを比較によって判断する比較判断部と、
前記比較判断部の比較判断結果によって前記バイアス入力電圧を制御する電圧制御部と、
を具備して構成されることを特徴とする請求項1記載のポータブル端末機の電力増幅装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020005924A KR100553252B1 (ko) | 2002-02-01 | 2002-02-01 | 휴대용 단말기의 전력 증폭 장치 |
PCT/KR2002/000163 WO2003065599A1 (en) | 2002-02-01 | 2002-02-04 | Power amplification apparatus of portable terminal |
Publications (2)
Publication Number | Publication Date |
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JP2005516524A JP2005516524A (ja) | 2005-06-02 |
JP4252458B2 true JP4252458B2 (ja) | 2009-04-08 |
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Application Number | Title | Priority Date | Filing Date |
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JP2003565065A Expired - Fee Related JP4252458B2 (ja) | 2002-02-01 | 2002-02-04 | ポータブル端末機の電力増幅装置 |
Country Status (9)
Country | Link |
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US (5) | US7345535B2 (ja) |
EP (1) | EP1476949B1 (ja) |
JP (1) | JP4252458B2 (ja) |
KR (1) | KR100553252B1 (ja) |
CN (1) | CN100559719C (ja) |
AT (1) | ATE435529T1 (ja) |
CA (1) | CA2474975A1 (ja) |
DE (1) | DE60232824D1 (ja) |
WO (1) | WO2003065599A1 (ja) |
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- 2002-02-01 KR KR1020020005924A patent/KR100553252B1/ko active IP Right Grant
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- 2002-02-04 JP JP2003565065A patent/JP4252458B2/ja not_active Expired - Fee Related
- 2002-02-04 DE DE60232824T patent/DE60232824D1/de not_active Expired - Lifetime
- 2002-02-04 WO PCT/KR2002/000163 patent/WO2003065599A1/en active Application Filing
- 2002-02-04 US US10/432,553 patent/US7345535B2/en not_active Expired - Lifetime
- 2002-02-04 AT AT02712490T patent/ATE435529T1/de not_active IP Right Cessation
- 2002-02-04 CA CA002474975A patent/CA2474975A1/en not_active Abandoned
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2003
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- 2003-12-15 US US10/737,476 patent/US7109790B2/en not_active Expired - Fee Related
- 2003-12-15 US US10/737,364 patent/US7061314B2/en not_active Expired - Fee Related
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US20040119533A1 (en) | 2004-06-24 |
JP2005516524A (ja) | 2005-06-02 |
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US20050012547A1 (en) | 2005-01-20 |
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EP1476949A1 (en) | 2004-11-17 |
WO2003065599A1 (en) | 2003-08-07 |
US20070057722A1 (en) | 2007-03-15 |
US7061314B2 (en) | 2006-06-13 |
ATE435529T1 (de) | 2009-07-15 |
US20040183593A1 (en) | 2004-09-23 |
CN1618178A (zh) | 2005-05-18 |
EP1476949A4 (en) | 2005-05-04 |
CA2474975A1 (en) | 2003-08-07 |
DE60232824D1 (de) | 2009-08-13 |
CN100559719C (zh) | 2009-11-11 |
US20040145416A1 (en) | 2004-07-29 |
KR20030065873A (ko) | 2003-08-09 |
US7053706B2 (en) | 2006-05-30 |
KR100553252B1 (ko) | 2006-02-20 |
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