CN1206806C - 具有负载控制以产生幅度包络的放大器系统 - Google Patents
具有负载控制以产生幅度包络的放大器系统 Download PDFInfo
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- CN1206806C CN1206806C CNB001213539A CN00121353A CN1206806C CN 1206806 C CN1206806 C CN 1206806C CN B001213539 A CNB001213539 A CN B001213539A CN 00121353 A CN00121353 A CN 00121353A CN 1206806 C CN1206806 C CN 1206806C
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Classifications
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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
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0261—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 polarisation voltage or current, e.g. gliding Class A
-
- 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
- H03F1/0222—Continuous control by using a signal derived from the input signal
-
- 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
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transmitters (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims (11)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/359,280 | 1999-07-22 | ||
US09/359280 | 1999-07-22 | ||
US09/359,280 US6438360B1 (en) | 1999-07-22 | 1999-07-22 | Amplifier system with load control to produce an amplitude envelope |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1282141A CN1282141A (zh) | 2001-01-31 |
CN1206806C true CN1206806C (zh) | 2005-06-15 |
Family
ID=23413136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB001213539A Expired - Lifetime CN1206806C (zh) | 1999-07-22 | 2000-07-21 | 具有负载控制以产生幅度包络的放大器系统 |
Country Status (4)
Country | Link |
---|---|
US (1) | US6438360B1 (zh) |
KR (1) | KR100359600B1 (zh) |
CN (1) | CN1206806C (zh) |
GB (1) | GB2356095B (zh) |
Families Citing this family (107)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3421452B2 (ja) * | 1994-12-07 | 2003-06-30 | 富士通株式会社 | 非線形歪補償装置 |
AU2466001A (en) * | 1999-12-30 | 2001-07-16 | Morphics Technology, Inc. | A configurable all-digital coherent demodulator system for spread spectrum applications |
GB2359680B (en) * | 2000-02-25 | 2002-05-15 | Motorola Israel Ltd | Apparatus for linear transmitter with improved loop gain stabilization |
US8744384B2 (en) | 2000-07-20 | 2014-06-03 | Blackberry Limited | Tunable microwave devices with auto-adjusting matching circuit |
US6795712B1 (en) * | 2000-09-20 | 2004-09-21 | Skyworks Solutions, Inc. | System for allowing a TDMA/CDMA portable transceiver to operate with closed loop power control |
US7006553B1 (en) * | 2000-10-10 | 2006-02-28 | Freescale Semiconductor, Inc. | Analog signal separator for UWB versus narrowband signals |
US6834182B2 (en) * | 2001-01-31 | 2004-12-21 | Nokia Corporation | Method and apparatus providing real-time adjacent channel power ratio (ACPR) in a mobile station |
GB0107264D0 (en) * | 2001-03-22 | 2001-05-16 | Nokia Networks Oy | Processing signals in a transmitter |
US7171170B2 (en) * | 2001-07-23 | 2007-01-30 | Sequoia Communications | Envelope limiting for polar modulators |
US7113033B2 (en) * | 2002-01-31 | 2006-09-26 | Qualcomm Incorporated | Variable impedance load for a variable gain radio frequency amplifier |
WO2003073660A2 (en) * | 2002-02-21 | 2003-09-04 | Analog Devices, Inc. | 3g radio |
GB0204108D0 (en) * | 2002-02-21 | 2002-04-10 | Analog Devices Inc | 3G radio |
US7551688B2 (en) * | 2002-04-18 | 2009-06-23 | Nokia Corporation | Waveforms for envelope tracking transmitter |
EP1504525A2 (de) * | 2002-05-14 | 2005-02-09 | Siemens Aktiengesellschaft | Verfahren zum erzeugen eines sendesignals |
EP1381154A1 (en) * | 2002-07-09 | 2004-01-14 | Lucent Technologies Inc. | Power amplification by using different fixed power supply signals for the amplifier |
US7751496B2 (en) * | 2003-06-25 | 2010-07-06 | Pine Valley Investments, Inc. | Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture |
US7221915B2 (en) * | 2003-06-25 | 2007-05-22 | M/A-Com, Inc. | Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture |
US7151913B2 (en) * | 2003-06-30 | 2006-12-19 | M/A-Com, Inc. | Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture |
US6937094B2 (en) * | 2002-11-22 | 2005-08-30 | Powerwave Technologies, Inc. | Systems and methods of dynamic bias switching for radio frequency power amplifiers |
US6801082B2 (en) * | 2002-12-31 | 2004-10-05 | Motorola, Inc. | Power amplifier circuit and method using bandlimited signal component estimates |
GB2398648B (en) | 2003-02-19 | 2005-11-09 | Nujira Ltd | Power supply stage for an amplifier |
FI115935B (fi) * | 2003-02-25 | 2005-08-15 | Nokia Corp | Menetelmä ja laite tehovahvistimen ominaisuuksien säätämiseksi |
US6917244B2 (en) * | 2003-06-10 | 2005-07-12 | Nokia Corporation | Power control for a switching mode power amplifier |
US6927627B2 (en) * | 2003-09-22 | 2005-08-09 | Motorola, Inc. | Amplifier power control in frequency hopping applications and methods |
EP1521359A1 (en) * | 2003-10-04 | 2005-04-06 | Lucent Technologies Network Systems GmbH | Amplifier assembly with an adjustable performance |
US7026868B2 (en) * | 2003-11-20 | 2006-04-11 | Northrop Grumman Corporation | Variable supply amplifier system |
US6940466B2 (en) * | 2003-11-25 | 2005-09-06 | Starkey Laboratories, Inc. | Enhanced magnetic field communication system |
JP2005167541A (ja) * | 2003-12-02 | 2005-06-23 | Matsushita Electric Ind Co Ltd | 送信機 |
US7450915B1 (en) * | 2003-12-27 | 2008-11-11 | Sequoia Communications | Smart transmitter system |
JP3978433B2 (ja) * | 2004-02-12 | 2007-09-19 | 松下電器産業株式会社 | 送信電力制御装置 |
US7183844B2 (en) * | 2004-12-30 | 2007-02-27 | Motorola, Inc. | Multi-state load switched power amplifier for polar modulation transmitter |
CN100530946C (zh) * | 2005-01-25 | 2009-08-19 | 中兴通讯股份有限公司 | 基于矢量包络注入的预失真方法与装置 |
US7346317B2 (en) * | 2005-04-04 | 2008-03-18 | Freescale Semiconductor, Inc. | Dynamic gain and phase compensation for power amplifier load switching |
US7653147B2 (en) * | 2005-08-17 | 2010-01-26 | Intel Corporation | Transmitter control |
US8411788B2 (en) * | 2005-11-18 | 2013-04-02 | Qualcomm, Incorporated | Digital transmitters for wireless communication |
US8107902B2 (en) * | 2005-11-28 | 2012-01-31 | Paragon Communications Ltd. | Method and apparatus for optimizing current consumption of amplifiers with power control |
US7542738B2 (en) * | 2005-12-21 | 2009-06-02 | Intel Corporation | Method and apparatus for measuring and compensating for power amplifier distortion and non-linearity |
JP4868846B2 (ja) * | 2005-12-22 | 2012-02-01 | 富士通株式会社 | 電圧制御信号調整装置及び電圧制御信号調整方法 |
US7711337B2 (en) | 2006-01-14 | 2010-05-04 | Paratek Microwave, Inc. | Adaptive impedance matching module (AIMM) control architectures |
US7933570B2 (en) * | 2006-02-03 | 2011-04-26 | Quantance, Inc. | Power amplifier controller circuit |
CN101401261B (zh) * | 2006-02-03 | 2012-11-21 | 匡坦斯公司 | 功率放大器控制器电路 |
US8032097B2 (en) | 2006-02-03 | 2011-10-04 | Quantance, Inc. | Amplitude error de-glitching circuit and method of operating |
US7869542B2 (en) * | 2006-02-03 | 2011-01-11 | Quantance, Inc. | Phase error de-glitching circuit and method of operating |
US7761065B2 (en) * | 2006-02-03 | 2010-07-20 | Quantance, Inc. | RF power amplifier controller circuit with compensation for output impedance mismatch |
US7917106B2 (en) * | 2006-02-03 | 2011-03-29 | Quantance, Inc. | RF power amplifier controller circuit including calibrated phase control loop |
US8095090B2 (en) * | 2006-02-03 | 2012-01-10 | Quantance, Inc. | RF power amplifier controller circuit |
US20070229024A1 (en) | 2006-03-30 | 2007-10-04 | Li Peter T | Balancing power supply and demand |
US7826810B2 (en) * | 2006-05-08 | 2010-11-02 | Harris Corporation | Multiband radio with transmitter output power optimization |
US8416845B1 (en) * | 2006-07-11 | 2013-04-09 | Altera Corporation | Decision feedback equalization for variable input amplitude |
US7593698B1 (en) * | 2006-07-11 | 2009-09-22 | Rf Micro Devices, Inc. | Large signal polar modulated power amplifier |
JP4829705B2 (ja) | 2006-07-12 | 2011-12-07 | 富士通株式会社 | ピーク抑圧制御装置 |
US7557551B1 (en) * | 2006-07-14 | 2009-07-07 | Rf Micro Devices, Inc. | Amplitude modulated switching voltage regulator |
US7590395B2 (en) * | 2006-07-27 | 2009-09-15 | Harris Corporation | Power management scheme for software-defined radios |
US7714676B2 (en) | 2006-11-08 | 2010-05-11 | Paratek Microwave, Inc. | Adaptive impedance matching apparatus, system and method |
US7535312B2 (en) | 2006-11-08 | 2009-05-19 | Paratek Microwave, Inc. | Adaptive impedance matching apparatus, system and method with improved dynamic range |
KR100833513B1 (ko) * | 2006-12-08 | 2008-05-29 | 한국전자통신연구원 | 센서 노드에 있어서의 임피던스 정합장치 및 그 방법 |
US20080240163A1 (en) * | 2007-04-02 | 2008-10-02 | Texas Instruments Incorporated | System and method for maintaining transmission synchrony |
US7917104B2 (en) | 2007-04-23 | 2011-03-29 | Paratek Microwave, Inc. | Techniques for improved adaptive impedance matching |
US20090011730A1 (en) * | 2007-07-05 | 2009-01-08 | Matsushita Electric Industrial Co., Ltd. | Methods and Apparatus for Controlling Power in a Polar Modulation Transmitter |
US8750414B2 (en) * | 2007-07-31 | 2014-06-10 | Broadcom Corporation | Method and system for polar modulation with discontinuous phase |
US7696821B2 (en) * | 2007-07-31 | 2010-04-13 | Broadcom Corporation | Method and system for extending dynamic range of an RF signal |
US8995567B2 (en) * | 2007-07-31 | 2015-03-31 | Broadcom Corporation | Method and system for power supply adjustment and polar modulation in a MIMO system |
US8155604B2 (en) * | 2007-07-31 | 2012-04-10 | Broadcom Corporation | Method and system for power supply adjustment and polar modulation in an RF transmitter |
US7991363B2 (en) | 2007-11-14 | 2011-08-02 | Paratek Microwave, Inc. | Tuning matching circuits for transmitter and receiver bands as a function of transmitter metrics |
US20090153250A1 (en) * | 2007-12-12 | 2009-06-18 | Ahmadreza Rofougaran | Method and system for scaling supply, device size, and load of a power amplifier |
US7782134B2 (en) * | 2008-09-09 | 2010-08-24 | Quantance, Inc. | RF power amplifier system with impedance modulation |
US8018277B2 (en) * | 2008-09-09 | 2011-09-13 | Quantance, Inc. | RF power amplifier system with impedance modulation |
US8072285B2 (en) | 2008-09-24 | 2011-12-06 | Paratek Microwave, Inc. | Methods for tuning an adaptive impedance matching network with a look-up table |
KR101522644B1 (ko) * | 2009-03-05 | 2015-05-26 | 삼성전자주식회사 | 송신기의 선형성 향상을 위한 장치 및 방법 |
EP2278705B1 (en) * | 2009-06-30 | 2011-08-10 | Alcatel Lucent | Envelope tracking radio frequency power amplifier |
EP2288021A1 (en) * | 2009-08-20 | 2011-02-23 | Alcatel Lucent | Amplifier and method for amplification of an RF signal |
US9026062B2 (en) | 2009-10-10 | 2015-05-05 | Blackberry Limited | Method and apparatus for managing operations of a communication device |
JP5349679B2 (ja) * | 2010-03-04 | 2013-11-20 | 三菱電機株式会社 | 送信モジュールおよびフェーズドアレイアンテナ装置 |
US8803631B2 (en) | 2010-03-22 | 2014-08-12 | Blackberry Limited | Method and apparatus for adapting a variable impedance network |
SG184010A1 (en) * | 2010-03-23 | 2012-10-30 | Ericsson Telefon Ab L M | Circuit and method for interference reduction |
EP2561621A4 (en) | 2010-04-20 | 2016-10-05 | Blackberry Ltd | METHOD AND DEVICE FOR ADMINISTERING INTERFERENCES IN A COMMUNICATION DEVICE |
US8416023B2 (en) | 2010-06-08 | 2013-04-09 | Nxp B.V. | System and method for compensating for changes in an output impedance of a power amplifier |
US8417199B2 (en) | 2010-07-23 | 2013-04-09 | Motorola Solutions, Inc. | Method and apparatus for improving efficiency in a power supply modulated system |
US8483633B2 (en) | 2010-07-23 | 2013-07-09 | Motorola Solutions, Inc. | Method and apparatus for alarming in a power supply modulated system |
US8364104B2 (en) * | 2010-09-24 | 2013-01-29 | Intel Corporation | Power calibration under voltage standing wave ratio change by frequency sweep |
DE102010061060A1 (de) * | 2010-12-07 | 2012-06-28 | Rwth Aachen | Leistungsverstärker für Hochfrequenzanwendungen im Schaltermodus |
US8712340B2 (en) | 2011-02-18 | 2014-04-29 | Blackberry Limited | Method and apparatus for radio antenna frequency tuning |
US8594584B2 (en) | 2011-05-16 | 2013-11-26 | Blackberry Limited | Method and apparatus for tuning a communication device |
US9769826B2 (en) | 2011-08-05 | 2017-09-19 | Blackberry Limited | Method and apparatus for band tuning in a communication device |
US8699975B1 (en) | 2012-02-01 | 2014-04-15 | Triquint Semiconductor, Inc. | Directional coupler architecture for radio frequency power amplifier |
US8547157B1 (en) | 2012-04-25 | 2013-10-01 | Triquint Semiconductor, Inc. | Radio frequency switching device with fast transient response time |
US8868011B2 (en) | 2012-04-30 | 2014-10-21 | Triquint Semiconductor, Inc. | Power amplifier with fast loadline modulation |
US9853363B2 (en) | 2012-07-06 | 2017-12-26 | Blackberry Limited | Methods and apparatus to control mutual coupling between antennas |
US9350405B2 (en) | 2012-07-19 | 2016-05-24 | Blackberry Limited | Method and apparatus for antenna tuning and power consumption management in a communication device |
US8606198B1 (en) | 2012-07-20 | 2013-12-10 | Triquint Semiconductor, Inc. | Directional coupler architecture for radio frequency power amplifier with complex load |
US20140112414A1 (en) * | 2012-10-18 | 2014-04-24 | Mediatek Singapore Pte. Ltd. | Power amplifier and the related power amplifying method |
US9374113B2 (en) * | 2012-12-21 | 2016-06-21 | Blackberry Limited | Method and apparatus for adjusting the timing of radio antenna tuning |
US10404295B2 (en) | 2012-12-21 | 2019-09-03 | Blackberry Limited | Method and apparatus for adjusting the timing of radio antenna tuning |
US9680434B2 (en) * | 2012-12-28 | 2017-06-13 | Mediatek, Inc. | Method and apparatus for calibrating an envelope tracking system |
US20150180426A1 (en) * | 2013-11-18 | 2015-06-25 | Auriga Measurement Systems, LLC | Adaptive receiver/transmitter amplifier circuit |
EP2882096A1 (en) * | 2013-12-06 | 2015-06-10 | Alcatel Lucent | Power amplifier device with controlled envelope tracking modulator and adapted static voltage |
US9520907B2 (en) | 2014-02-16 | 2016-12-13 | Mediatek Inc. | Methods and apparatus for envelope tracking system |
US9438319B2 (en) | 2014-12-16 | 2016-09-06 | Blackberry Limited | Method and apparatus for antenna selection |
CN104993840B (zh) * | 2015-05-25 | 2018-02-27 | 联想(北京)有限公司 | 电子设备和信息处理方法 |
DE112017000698B4 (de) * | 2016-02-08 | 2024-03-21 | Sony Corporation | Sendevorrichtung und Kommunikationssystem |
US10644661B2 (en) * | 2018-08-06 | 2020-05-05 | Cirrus Logic, Inc. | Variable output resistance in a playback path with open-loop pulse-width modulation driver |
CN110149291B (zh) * | 2019-05-06 | 2023-05-09 | 南京睿赫电子有限公司 | 一种用于无线充电接收端ask负载调制电路及调制方法 |
EP3876421A1 (en) * | 2020-03-06 | 2021-09-08 | Rohde & Schwarz GmbH & Co. KG | High frequency amplifier and method for amplifying a high frequency signal |
CN111371416B (zh) * | 2020-03-18 | 2024-04-30 | 锐石创芯(深圳)科技股份有限公司 | 一种可切换输出阻抗的偏置网络、控制方法及功率放大器系统 |
US20220385237A1 (en) * | 2021-05-26 | 2022-12-01 | Skyworks Solutions, Inc. | Load modulated power amplifiers |
WO2024162999A1 (en) * | 2023-01-30 | 2024-08-08 | Qorvo Us, Inc. | Peak-to-average ratio (par)-based analog predistortion (apd) in a front-end module |
CN116865774B (zh) * | 2023-09-04 | 2023-11-14 | 中国电子科技集团公司第十四研究所 | 一种基于饱和功放的调幅信号产生方法 |
Family Cites Families (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3678406A (en) * | 1970-08-26 | 1972-07-18 | Rca Corp | Variable gain amplifier |
US3693088A (en) * | 1970-12-29 | 1972-09-19 | Bell Telephone Labor Inc | Diversity system for mobile radio using fade rate switching |
US4041395A (en) | 1976-08-02 | 1977-08-09 | Integral Engineering & Manufacturing Corporation | Transmitter performance monitor and antenna matching system |
JPS54307U (zh) * | 1977-06-04 | 1979-01-05 | ||
US4147985A (en) | 1977-07-29 | 1979-04-03 | Rogers Noel A | Low level modulation system for a radio transmitter |
US4165493A (en) | 1978-04-17 | 1979-08-21 | Rockwell International Corporation | Protected amplifier apparatus |
US4348644A (en) | 1979-09-14 | 1982-09-07 | Nippon Gakki Seizo Kabushiki Kaisha | Power amplifying circuit with changing means for supply voltage |
US4403194A (en) * | 1981-03-11 | 1983-09-06 | Talbot Daniel B | Closed loop amplitude demodulator |
US4370622A (en) | 1981-03-23 | 1983-01-25 | Rockwell International Corporation | IMD Limiter |
US4356458A (en) | 1981-08-31 | 1982-10-26 | Harry H. Leveen | Automatic impedance matching apparatus |
JPS58147215A (ja) * | 1982-02-26 | 1983-09-02 | Nec Corp | 自動利得制御装置 |
US4442407A (en) | 1982-06-11 | 1984-04-10 | The United States Of America As Represented By The Secretary Of The Army | Two loop automatic level control for power amplifier |
US4546313A (en) | 1983-03-14 | 1985-10-08 | The United States Of America As Represented By The United States Department Of Energy | Peak power ratio generator |
US4647871A (en) | 1985-11-22 | 1987-03-03 | Motorola, Inc. | Adaptive impedance mismatch detector system |
US4827219A (en) | 1988-01-07 | 1989-05-02 | The Regents Of The University Of California | Remotely adjustable MRI RF coil impedance matching circuit with mutualy coupled resonators |
JPH01201244A (ja) | 1988-02-08 | 1989-08-14 | Toshiba Corp | Mri装置のインピーダンス自動調整装置 |
FR2644647B1 (fr) | 1989-03-15 | 1991-05-24 | Alcatel Transmission | Oscillateur hyperfrequence commande en tension |
US4924191A (en) | 1989-04-18 | 1990-05-08 | Erbtec Engineering, Inc. | Amplifier having digital bias control apparatus |
US5170496A (en) | 1989-06-22 | 1992-12-08 | Texas Instruments Deutschland Gmbh | Circuit arrangement for matching the resonant frequency of an antenna resonant circuit to the output frequency of a transmitter output stage |
DE69024182T2 (de) | 1989-06-30 | 1996-10-31 | Nippon Telegraph & Telephone | Linearer sender |
FR2652969A1 (fr) | 1989-10-06 | 1991-04-12 | Philips Electronique Lab | Dispositif de predistorsion pour systeme de transmission numerique. |
US4994757A (en) | 1989-11-01 | 1991-02-19 | Motorola, Inc. | Efficiency improvement of power amplifiers |
US4985686A (en) | 1989-12-04 | 1991-01-15 | Motorola, Inc. | Active load impedance control system for radio frequency power amplifiers |
JPH03198407A (ja) | 1989-12-26 | 1991-08-29 | Mitsubishi Electric Corp | 線形増幅器 |
US5276912A (en) | 1990-02-06 | 1994-01-04 | Motorola, Inc. | Radio frequency power amplifier having variable output power |
JP2647730B2 (ja) | 1990-06-01 | 1997-08-27 | ソニー株式会社 | 移動電話装置 |
US5060294A (en) | 1990-07-05 | 1991-10-22 | Motorola, Inc. | Dual mode power amplifier for radiotelephone |
JP3086512B2 (ja) | 1990-11-14 | 2000-09-11 | エリクソン−ジーイー モービル コミュニケーションズ ホールディング インコーポレイテッド | 送信機及びその電力増幅回路 |
JPH06503449A (ja) | 1990-12-17 | 1994-04-14 | モトローラ・インコーポレイテッド | 動的にバイアスされた増幅器 |
US5195045A (en) | 1991-02-27 | 1993-03-16 | Astec America, Inc. | Automatic impedance matching apparatus and method |
US5220276A (en) | 1991-06-11 | 1993-06-15 | Keithley Corporation | Crest factor measurement device |
JP2723702B2 (ja) | 1991-07-31 | 1998-03-09 | 日本電気株式会社 | 線形補償回路 |
US5428828A (en) | 1992-08-28 | 1995-06-27 | Thomson Consumer Electronics, Inc. | Television receiver tuning circuit |
US5300894A (en) | 1992-10-20 | 1994-04-05 | At&T Bell Laboratories | Circuitry for minimizing peak power in an amplifier carrying a plurality of signals of differing frequencies |
US5302914A (en) | 1992-10-20 | 1994-04-12 | At&T Bell Laboratories | Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems |
IT1256225B (it) | 1992-12-23 | 1995-11-29 | Sits Soc It Telecom Siemens | Procedimento e circuito per la compensazione adattativa delle distorsioni di guadagno di un amplificatore alle microonde con linearizzatore |
US5420536A (en) | 1993-03-16 | 1995-05-30 | Victoria University Of Technology | Linearized power amplifier |
US5351016A (en) | 1993-05-28 | 1994-09-27 | Ericsson Ge Mobile Communications Inc. | Adaptively self-correcting modulation system and method |
US5339041A (en) | 1993-07-06 | 1994-08-16 | The Boeing Company | High efficiency power amplifier |
US5564086A (en) | 1993-11-29 | 1996-10-08 | Motorola, Inc. | Method and apparatus for enhancing an operating characteristic of a radio transmitter |
US5483680A (en) | 1994-01-07 | 1996-01-09 | Harris Corporation | Tuning method for automatic antenna couplers |
US5574967A (en) * | 1994-01-11 | 1996-11-12 | Ericsson Ge Mobile Communications, Inc. | Waste energy control and management in power amplifiers |
GB2289989B (en) | 1994-05-25 | 1999-01-06 | Nokia Mobile Phones Ltd | Adaptive antenna matching |
US5589796A (en) | 1994-11-01 | 1996-12-31 | Motorola, Inc | Method and apparatus for increasing amplifier efficiency |
US5640691A (en) | 1994-12-19 | 1997-06-17 | Lucent Technologies Inc. | Power controller for RF transmitters |
US5673001A (en) | 1995-06-07 | 1997-09-30 | Motorola, Inc. | Method and apparatus for amplifying a signal |
US5724003A (en) * | 1995-12-29 | 1998-03-03 | Maxim Integrated Products, Inc. | Methods and apparatus for signal amplitude control systems |
US5742201A (en) | 1996-01-30 | 1998-04-21 | Spectrian | Polar envelope correction mechanism for enhancing linearity of RF/microwave power amplifier |
US6141541A (en) * | 1997-12-31 | 2000-10-31 | Motorola, Inc. | Method, device, phone and base station for providing envelope-following for variable envelope radio frequency signals |
-
1999
- 1999-07-22 US US09/359,280 patent/US6438360B1/en not_active Expired - Lifetime
-
2000
- 2000-07-14 GB GB0017433A patent/GB2356095B/en not_active Expired - Lifetime
- 2000-07-21 KR KR1020000041869A patent/KR100359600B1/ko active IP Right Grant
- 2000-07-21 CN CNB001213539A patent/CN1206806C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
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GB0017433D0 (en) | 2000-08-30 |
GB2356095A (en) | 2001-05-09 |
KR100359600B1 (ko) | 2002-11-07 |
US6438360B1 (en) | 2002-08-20 |
KR20010015390A (ko) | 2001-02-26 |
GB2356095B (en) | 2002-02-13 |
CN1282141A (zh) | 2001-01-31 |
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