DE102004040262A1 - Architektur und Ausführungsverfahren von digitalen Vorverzerrungsschaltungen - Google Patents
Architektur und Ausführungsverfahren von digitalen Vorverzerrungsschaltungen Download PDFInfo
- Publication number
- DE102004040262A1 DE102004040262A1 DE102004040262A DE102004040262A DE102004040262A1 DE 102004040262 A1 DE102004040262 A1 DE 102004040262A1 DE 102004040262 A DE102004040262 A DE 102004040262A DE 102004040262 A DE102004040262 A DE 102004040262A DE 102004040262 A1 DE102004040262 A1 DE 102004040262A1
- Authority
- DE
- Germany
- Prior art keywords
- architecture
- execution
- digital predistortion
- correction factors
- amplifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000003446 memory effect Effects 0.000 abstract 1
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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3252—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using multiple parallel paths between input and output
-
- 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
- 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
- H03F1/3258—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits based on polynomial terms
-
- 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
- H03F1/3282—Acting on the phase and the amplitude of the input signal
- H03F1/3288—Acting on the phase and the amplitude of the input signal to compensate phase shift as a function of the amplitude
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/195—A hybrid coupler being used as power measuring circuit at the input of an amplifier circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/336—A I/Q, i.e. phase quadrature, modulator or demodulator 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
Abstract
Ein Vorverzerrer mit einem Modulator, der zur Verwendung mit einem HF-Leistungsverstärker oder in einem Verstärkersystem konfiguriert ist, das in einer Datenstruktur Korrekturfaktoren für Amplituden- und Phasen-Nichtlinearitäten in der Antwort des Verstärkers und des Modulators kombiniert. Es können auch Korrekturfaktoren für Speichereffekte in der Antwort des HF-Leistungsverstärkers innerhalb der Datenstrukturen aus Skalierungsfaktoren berechnet werden, die in die Datenstruktur übertragen werden. Eine solche Berechnung kann auf einem skalierten Polynom basieren. Eine Schaltung zur Anwendung der Differenzengleichung auf die Korrekturfaktoren kann auch enthalten sein.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/679,873 US7023273B2 (en) | 2003-10-06 | 2003-10-06 | Architecture and implementation methods of digital predistortion circuitry |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004040262A1 true DE102004040262A1 (de) | 2005-04-28 |
Family
ID=32928000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004040262A Withdrawn DE102004040262A1 (de) | 2003-10-06 | 2004-08-19 | Architektur und Ausführungsverfahren von digitalen Vorverzerrungsschaltungen |
Country Status (4)
Country | Link |
---|---|
US (1) | US7023273B2 (de) |
CN (1) | CN1607722B (de) |
DE (1) | DE102004040262A1 (de) |
GB (1) | GB2406986B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006017515B3 (de) * | 2006-04-13 | 2007-10-18 | Infineon Technologies Ag | Vorverzerrer, Verstärker und Verfahren |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8811917B2 (en) | 2002-05-01 | 2014-08-19 | Dali Systems Co. Ltd. | Digital hybrid mode power amplifier system |
US8472897B1 (en) | 2006-12-22 | 2013-06-25 | Dali Systems Co. Ltd. | Power amplifier predistortion methods and apparatus |
US8380143B2 (en) | 2002-05-01 | 2013-02-19 | Dali Systems Co. Ltd | Power amplifier time-delay invariant predistortion methods and apparatus |
US6985704B2 (en) | 2002-05-01 | 2006-01-10 | Dali Yang | System and method for digital memorized predistortion for wireless communication |
US8064850B2 (en) | 2002-05-01 | 2011-11-22 | Dali Systems Co., Ltd. | High efficiency linearization power amplifier for wireless communication |
KR100518456B1 (ko) * | 2003-10-10 | 2005-09-30 | 학교법인 포항공과대학교 | 전력 증폭기의 선형화를 위한 디지털 피드백 선형화 장치및 방법 |
JP4467319B2 (ja) * | 2004-01-29 | 2010-05-26 | 株式会社日立国際電気 | プリディストータ |
JP4801074B2 (ja) * | 2004-09-15 | 2011-10-26 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | 信号プリディストーションに関する装置と方法 |
US7355470B2 (en) | 2006-04-24 | 2008-04-08 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning |
US7327803B2 (en) | 2004-10-22 | 2008-02-05 | Parkervision, Inc. | Systems and methods for vector power amplification |
US7706467B2 (en) | 2004-12-17 | 2010-04-27 | Andrew Llc | Transmitter with an envelope tracking power amplifier utilizing digital predistortion of the signal envelope |
US20060199553A1 (en) * | 2005-03-07 | 2006-09-07 | Andrew Corporation | Integrated transceiver with envelope tracking |
US7193462B2 (en) * | 2005-03-22 | 2007-03-20 | Powerwave Technologies, Inc. | RF power amplifier system employing an analog predistortion module using zero crossings |
US7653147B2 (en) * | 2005-08-17 | 2010-01-26 | Intel Corporation | Transmitter control |
US7911272B2 (en) | 2007-06-19 | 2011-03-22 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments |
US20130078934A1 (en) | 2011-04-08 | 2013-03-28 | Gregory Rawlins | Systems and Methods of RF Power Transmission, Modulation, and Amplification |
US7937106B2 (en) | 2006-04-24 | 2011-05-03 | ParkerVision, Inc, | Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same |
US8031804B2 (en) | 2006-04-24 | 2011-10-04 | Parkervision, Inc. | Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion |
CN100492921C (zh) * | 2006-05-30 | 2009-05-27 | 华为技术有限公司 | 一种接收机及接收无线信号的方法 |
US8315336B2 (en) | 2007-05-18 | 2012-11-20 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification, including a switching stage embodiment |
US7881680B1 (en) * | 2006-10-23 | 2011-02-01 | Marvell International Ltd. | Predictive transmitter calibration |
US20080112506A1 (en) * | 2006-11-13 | 2008-05-15 | Motorola, Inc. | Transmission power optimization |
CN104202279A (zh) | 2006-12-26 | 2014-12-10 | 大力系统有限公司 | 用于多信道宽带通信系统中的基带预失真线性化的方法和系统 |
KR101314254B1 (ko) * | 2007-02-16 | 2013-10-02 | 삼성전자주식회사 | Ofdm 송수신 시스템 및 그 방법 |
WO2008156800A1 (en) | 2007-06-19 | 2008-12-24 | Parkervision, Inc. | Combiner-less multiple input single output (miso) amplification with blended control |
WO2009005768A1 (en) | 2007-06-28 | 2009-01-08 | Parkervision, Inc. | Systems and methods of rf power transmission, modulation, and amplification |
CN101399637B (zh) * | 2007-09-27 | 2012-01-25 | 联想(上海)有限公司 | 一种对射频链路中的信号进行矫正的方法及预矫正器 |
FI20075690A0 (fi) * | 2007-10-01 | 2007-10-01 | Nokia Corp | Signaalin esivääristäminen radiolähettimessä |
GB0801413D0 (en) * | 2008-01-25 | 2008-03-05 | Nokia Corp | Calibration technique |
US8085869B2 (en) * | 2008-02-14 | 2011-12-27 | Broadcom Corporation | Configurable load impedance for power amplifier predistortion calibration |
WO2009145887A1 (en) | 2008-05-27 | 2009-12-03 | Parkervision, Inc. | Systems and methods of rf power transmission, modulation, and amplification |
CN101895259B (zh) * | 2009-05-18 | 2013-01-02 | 富士通株式会社 | 预失真器、预失真方法和预失真系统 |
US8582687B2 (en) * | 2009-06-26 | 2013-11-12 | Plusn, Llc | System and method for controlling combined radio signals |
KR102136940B1 (ko) | 2010-09-14 | 2020-07-23 | 달리 시스템즈 씨오. 엘티디. | 원격으로 재구성가능한 분산 안테나 시스템 및 방법 |
EP2715867A4 (de) | 2011-06-02 | 2014-12-17 | Parkervision Inc | Antennensteuerung |
US20130100868A1 (en) * | 2011-10-20 | 2013-04-25 | Xetawave, Llc | Phase coherent radio |
JP5853913B2 (ja) * | 2012-09-12 | 2016-02-09 | 富士通株式会社 | アドレス制御装置、送信装置およびアドレス制御方法 |
US20140218107A1 (en) * | 2013-02-04 | 2014-08-07 | Qualcomm Incorporated | Method and apparatus for applying predistortion to an input signal for a nonlinear power amplifier |
TWI560998B (en) * | 2013-07-11 | 2016-12-01 | Realtek Semiconductor Corp | Pre-distortion method, pre-distortion apparatus and machine readable medium |
CN104300919B (zh) * | 2013-07-19 | 2017-06-16 | 瑞昱半导体股份有限公司 | 预失真方法以及预失真装置 |
TWI536731B (zh) * | 2013-08-20 | 2016-06-01 | 瑞昱半導體股份有限公司 | 預失真方法、預失真裝置以及機器可讀媒體 |
EP3047348A4 (de) | 2013-09-17 | 2016-09-07 | Parkervision Inc | Verfahren, vorrichtung und system für die darstellung einer datenträgerzeitfunktion |
CN109889318A (zh) | 2013-11-26 | 2019-06-14 | 普鲁斯恩公司 | 通信方法、通信系统和计算机可读介质 |
WO2019174051A1 (en) * | 2018-03-16 | 2019-09-19 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and arrangement for compensating memory effects in power amplifier |
US10700914B1 (en) | 2019-09-20 | 2020-06-30 | Analog Devices, Inc. | Digital pre-distortion (DPD) in a wireless transmitter |
RU2731135C1 (ru) * | 2019-11-22 | 2020-08-31 | Акционерное общество "Концерн "Созвездие" | Радиопередающее устройство с цифровой коррекцией нелинейности |
CN113132279A (zh) * | 2019-12-30 | 2021-07-16 | 中兴通讯股份有限公司 | 一种预失真处理方法、装置、设备和存储介质 |
RU2761856C1 (ru) * | 2020-12-28 | 2021-12-13 | Акционерное общество "ГлобалИнформСервис" | Способ повышения линейности высокочастотных усилителей мощности и устройство для его осуществления |
Family Cites Families (88)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US573233A (en) * | 1896-12-15 | Max netto | ||
US3241078A (en) * | 1963-06-18 | 1966-03-15 | Honeywell Inc | Dual output synchronous detector utilizing transistorized differential amplifiers |
US3689752A (en) * | 1970-04-13 | 1972-09-05 | Tektronix Inc | Four-quadrant multiplier circuit |
US4156283A (en) * | 1972-05-30 | 1979-05-22 | Tektronix, Inc. | Multiplier circuit |
ES2045047T3 (es) * | 1988-08-31 | 1994-01-16 | Siemens Ag | Multiplicador de cuatro cuadrantes de entradas multiples. |
US4879519A (en) * | 1988-10-31 | 1989-11-07 | American Telephone And Telegraph Company, At&T Bell Labs | Predistortion compensated linear amplifier |
US4885551A (en) | 1988-10-31 | 1989-12-05 | American Telephone And Telegraph Company At&T Bell Laboratories | Feed forward linear amplifier |
US4978873A (en) * | 1989-10-11 | 1990-12-18 | The United States Of America As Represented By The Secretary Of The Navy | CMOS analog four-quadrant multiplier |
GB2238195A (en) * | 1989-11-16 | 1991-05-22 | Motorola Inc | Feed forward amplifier with pilot tone cancellation |
US5023565A (en) * | 1990-01-26 | 1991-06-11 | At&T Bell Laboratories | Linear amplifier with automatic adjustment of feed forward loop gain and phase |
US5049832A (en) * | 1990-04-20 | 1991-09-17 | Simon Fraser University | Amplifier linearization by adaptive predistortion |
US5119040A (en) * | 1991-01-04 | 1992-06-02 | Motorola, Inc. | Method and apparatus for optimizing the performance of a power amplifier circuit |
US5130663A (en) * | 1991-04-15 | 1992-07-14 | Motorola, Inc. | Feed forward amplifier network with frequency swept pilot tone |
US5477187A (en) * | 1992-03-19 | 1995-12-19 | Fujitsu Limited | Feed forward amplifier |
US5325095A (en) * | 1992-07-14 | 1994-06-28 | The United States Of America As Represented By The United States Department Of Energy | Stepped frequency ground penetrating radar |
US5420536A (en) * | 1993-03-16 | 1995-05-30 | Victoria University Of Technology | Linearized power amplifier |
GB9307384D0 (en) * | 1993-04-08 | 1993-06-02 | Philips Electronics Uk Ltd | Four quadrant multiplier and a receiver including such a circuit |
US5574967A (en) * | 1994-01-11 | 1996-11-12 | Ericsson Ge Mobile Communications, Inc. | Waste energy control and management in power amplifiers |
US5610554A (en) * | 1994-07-28 | 1997-03-11 | Aval Communications Inc. | Cancellation loop, for a feed-forward amplifier, employing an adaptive controller |
US5485120A (en) * | 1994-07-28 | 1996-01-16 | Aval Communications Inc. | Feed-forward power amplifier system with adaptive control and control method |
JP2697625B2 (ja) * | 1994-08-31 | 1998-01-14 | 日本電気株式会社 | フィードフォワード増幅器 |
US5491454A (en) * | 1994-10-31 | 1996-02-13 | Motorola, Inc. | Method and apparatus for reducing distortion in an output signal of an amplifier |
US5528196A (en) * | 1995-01-06 | 1996-06-18 | Spectrian, Inc. | Linear RF amplifier having reduced intermodulation distortion |
JP3360464B2 (ja) * | 1995-02-13 | 2002-12-24 | 松下電器産業株式会社 | フィードフォワード増幅器 |
JP3320284B2 (ja) * | 1995-04-18 | 2002-09-03 | 富士通株式会社 | フィードフォワード増幅装置及びフィードフォワード増幅装置の制御方法並びにフィードフォワード増幅装置付き基地局 |
AU7462896A (en) | 1995-08-23 | 1997-03-19 | Motorola, Inc. | Wideband power amplifier control systems |
US5621354A (en) * | 1995-10-17 | 1997-04-15 | Motorola, Inc. | Apparatus and method for performing error corrected amplification in a radio frequency system |
RU2142670C1 (ru) * | 1995-11-16 | 1999-12-10 | Самсунг Электроникс Ко., Лтд. | Устройство линейного усиления мощности |
US5732333A (en) * | 1996-02-14 | 1998-03-24 | Glenayre Electronics, Inc. | Linear transmitter using predistortion |
US5760646A (en) * | 1996-03-29 | 1998-06-02 | Spectrian | Feed-forward correction loop with adaptive predistortion injection for linearization of RF power amplifier |
US5892397A (en) * | 1996-03-29 | 1999-04-06 | Spectrian | Adaptive compensation of RF amplifier distortion by injecting predistortion signal derived from respectively different functions of input signal amplitude |
US5740520A (en) * | 1996-04-03 | 1998-04-14 | State Of Israel | Channel correction transceiver |
US6064250A (en) * | 1996-07-29 | 2000-05-16 | Townsend And Townsend And Crew Llp | Various embodiments for a low power adaptive charge pump circuit |
FR2752313B1 (fr) * | 1996-08-07 | 1998-11-13 | Alcatel Telspace | Procede et dispositif de modelisation des caracteristiques am/am et am/pm d'un amplificateur, et procede de predistorsion correspondant |
US5862459A (en) * | 1996-08-27 | 1999-01-19 | Telefonaktiebolaget Lm Ericsson | Method of and apparatus for filtering intermodulation products in a radiocommunication system |
US5898338A (en) * | 1996-09-20 | 1999-04-27 | Spectrian | Adaptive digital predistortion linearization and feed-forward correction of RF power amplifier |
US5933766A (en) * | 1996-12-16 | 1999-08-03 | Ericsson Inc. | Intermodulation compensation in multi-channel amplifiers |
US6091715A (en) * | 1997-01-02 | 2000-07-18 | Dynamic Telecommunications, Inc. | Hybrid radio transceiver for wireless networks |
US6208846B1 (en) * | 1997-01-13 | 2001-03-27 | Lucent Technologies, Inc. | Method and apparatus for enhancing transmitter circuit efficiency of mobile radio units by selectable switching of power amplifier |
US5808512A (en) * | 1997-01-31 | 1998-09-15 | Ophir Rf, Inc. | Feed forward amplifiers and methods |
US5923712A (en) * | 1997-05-05 | 1999-07-13 | Glenayre Electronics, Inc. | Method and apparatus for linear transmission by direct inverse modeling |
US5867065A (en) * | 1997-05-07 | 1999-02-02 | Glenayre Electronics, Inc. | Frequency selective predistortion in a linear transmitter |
US5880633A (en) * | 1997-05-08 | 1999-03-09 | Motorola, Inc. | High efficiency power amplifier |
US5900778A (en) * | 1997-05-08 | 1999-05-04 | Stonick; John T. | Adaptive parametric signal predistorter for compensation of time varying linear and nonlinear amplifier distortion |
US6072364A (en) * | 1997-06-17 | 2000-06-06 | Amplix | Adaptive digital predistortion for power amplifiers with real time modeling of memoryless complex gains |
US6091295A (en) * | 1997-06-27 | 2000-07-18 | The Whitaker Corporation | Predistortion to improve linearity of an amplifier |
US5831478A (en) * | 1997-09-30 | 1998-11-03 | Motorola, Inc. | Feedforward amplifier |
US5959499A (en) * | 1997-09-30 | 1999-09-28 | Motorola, Inc. | Predistortion system and method using analog feedback loop for look-up table training |
US5923214A (en) * | 1997-12-17 | 1999-07-13 | Motorola, Inc. | Feedforward amplifier network with swept pilot tone for reducing distortion generated by a power amplifier |
US5912586A (en) * | 1997-12-23 | 1999-06-15 | Motorola, Inc. | Feed forward amplifier with digital intermodulation control |
US6125266A (en) * | 1997-12-31 | 2000-09-26 | Nokia Mobile Phones Limited | Dual band architectures for mobile stations having transmitter linearization feedback |
US5977826A (en) * | 1998-03-13 | 1999-11-02 | Behan; Scott T. | Cascaded error correction in a feed forward amplifier |
US6160996A (en) | 1998-03-31 | 2000-12-12 | Lucent Technologies Inc. | Method for adaptively controlling amplifier linearization devices |
US6285251B1 (en) * | 1998-04-02 | 2001-09-04 | Ericsson Inc. | Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control |
US6046635A (en) * | 1998-04-08 | 2000-04-04 | Powerwave Technologies, Inc. | Dynamic predistortion compensation for a power amplifier |
JP3058269B2 (ja) * | 1998-04-08 | 2000-07-04 | 日本電気株式会社 | 携帯電話装置 |
US6236837B1 (en) * | 1998-07-30 | 2001-05-22 | Motorola, Inc. | Polynomial Predistortion linearizing device, method, phone and base station |
US6052023A (en) * | 1998-08-31 | 2000-04-18 | Lucent Technologies Inc. | Calibration system for feed forward distortion reduction system |
US6144255A (en) * | 1998-10-19 | 2000-11-07 | Powerwave Technologies, Inc. | Feedforward amplification system having mask detection compensation |
US6118339A (en) * | 1998-10-19 | 2000-09-12 | Powerwave Technologies, Inc. | Amplification system using baseband mixer |
US6493543B1 (en) | 1998-10-19 | 2002-12-10 | Powerwave Technologies, Inc. | Multichannel amplification system using mask detection |
US6154641A (en) * | 1998-10-27 | 2000-11-28 | Lucent Technologies Inc. | Wideband multiple channel frequency converter |
US6275685B1 (en) * | 1998-12-10 | 2001-08-14 | Nortel Networks Limited | Linear amplifier arrangement |
US5986499A (en) * | 1998-12-21 | 1999-11-16 | Lucent Technologies Inc. | Pilot signal detection system using band reject filter |
US6236267B1 (en) * | 1998-12-29 | 2001-05-22 | International Business Machines Corporation | Linearization for power amplifiers using feed-forward and feedback control |
US6166601A (en) * | 1999-01-07 | 2000-12-26 | Wiseband Communications Ltd. | Super-linear multi-carrier power amplifier |
US6104239A (en) * | 1999-03-12 | 2000-08-15 | Thomcast Communications, Inc. | Method for correcting frequency-varying nonlinear errors and digital correction circuit implementing same |
US6118335A (en) * | 1999-05-06 | 2000-09-12 | Nortel Networks Corporation | Method and apparatus for providing adaptive predistortion in power amplifier and base station utilizing same |
US6342810B1 (en) * | 1999-07-13 | 2002-01-29 | Pmc-Sierra, Inc. | Predistortion amplifier system with separately controllable amplifiers |
US6356146B1 (en) * | 1999-07-13 | 2002-03-12 | Pmc-Sierra, Inc. | Amplifier measurement and modeling processes for use in generating predistortion parameters |
US6172564B1 (en) * | 1999-07-30 | 2001-01-09 | Eugene Rzyski | Intermodulation product cancellation circuit |
US6157253A (en) * | 1999-09-03 | 2000-12-05 | Motorola, Inc. | High efficiency power amplifier circuit with wide dynamic backoff range |
US6211733B1 (en) * | 1999-10-22 | 2001-04-03 | Powerwave Technologies, Inc. | Predistortion compensation for a power amplifier |
US6246286B1 (en) * | 1999-10-26 | 2001-06-12 | Telefonaktiebolaget Lm Ericsson | Adaptive linearization of power amplifiers |
US6285255B1 (en) * | 1999-11-02 | 2001-09-04 | Harris Corporation | Adaptive compensation for carrier signal phase distortion |
KR100674586B1 (ko) * | 1999-12-30 | 2007-01-25 | 엘지전자 주식회사 | 전력증폭기의 전치왜곡 선형화기 |
JP2001223539A (ja) * | 2000-02-08 | 2001-08-17 | Nec Corp | アクティブフィードフォワード型プレディストーションに基づく線形電力増幅器 |
GB0011326D0 (en) * | 2000-05-11 | 2000-06-28 | Nortel Networks Corp | A linear amplifier arrangement |
US6304140B1 (en) * | 2000-06-12 | 2001-10-16 | Motorola, Inc. | Digital predistortion for amplifiers |
US6496064B2 (en) * | 2000-08-15 | 2002-12-17 | Eugene Rzyski | Intermodulation product cancellation circuit |
US6359508B1 (en) * | 2000-08-17 | 2002-03-19 | Spectrian Corporation | Distortion detection apparatus for controlling predistortion, carrier cancellation and feed-forward cancellation in linear RF power amplifiers |
JP3590571B2 (ja) * | 2000-08-30 | 2004-11-17 | 株式会社日立国際電気 | 歪補償装置 |
US20020171485A1 (en) | 2001-05-18 | 2002-11-21 | Spectrian Corporation | Digitally implemented predistorter control mechanism for linearizing high efficiency RF power amplifiers |
US6462617B1 (en) * | 2001-06-08 | 2002-10-08 | Lucent Technologies Inc. | Method and apparatus for calculating the predistortion function from a power amplifier model |
US6535066B1 (en) * | 2001-06-21 | 2003-03-18 | Cisco Technology, Inc. | Dynamic RF amplifier bias control for digital wireless communications devices |
US20030058959A1 (en) | 2001-09-25 | 2003-03-27 | Caly Networks. | Combined digital adaptive pre-distorter and pre-equalizer system for modems in link hopping radio networks |
US6731168B2 (en) | 2002-02-06 | 2004-05-04 | Intersil Americas, Inc. | Power amplifier linearizer that compensates for long-time-constant memory effects and method therefor |
US6919764B2 (en) | 2003-03-11 | 2005-07-19 | Andrew Corporation | Amplifier control system with statistical enhancement of resolution of digital control signals |
-
2003
- 2003-10-06 US US10/679,873 patent/US7023273B2/en not_active Expired - Fee Related
-
2004
- 2004-07-20 GB GB0416231A patent/GB2406986B/en not_active Expired - Fee Related
- 2004-08-19 DE DE102004040262A patent/DE102004040262A1/de not_active Withdrawn
- 2004-09-06 CN CN2004100687284A patent/CN1607722B/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006017515B3 (de) * | 2006-04-13 | 2007-10-18 | Infineon Technologies Ag | Vorverzerrer, Verstärker und Verfahren |
Also Published As
Publication number | Publication date |
---|---|
CN1607722A (zh) | 2005-04-20 |
US20050073360A1 (en) | 2005-04-07 |
US7023273B2 (en) | 2006-04-04 |
GB2406986A (en) | 2005-04-13 |
GB2406986B (en) | 2007-09-19 |
GB0416231D0 (en) | 2004-08-25 |
CN1607722B (zh) | 2010-05-12 |
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