CN1185788C - 具有负载调整以控制相邻和相间信道功率的功率放大电路 - Google Patents
具有负载调整以控制相邻和相间信道功率的功率放大电路 Download PDFInfo
- Publication number
- CN1185788C CN1185788C CNB001213474A CN00121347A CN1185788C CN 1185788 C CN1185788 C CN 1185788C CN B001213474 A CNB001213474 A CN B001213474A CN 00121347 A CN00121347 A CN 00121347A CN 1185788 C CN1185788 C CN 1185788C
- Authority
- CN
- China
- Prior art keywords
- power
- average
- peak
- level
- signal
- 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.)
- Expired - Lifetime
Links
- 230000003321 amplification Effects 0.000 title claims description 32
- 238000003199 nucleic acid amplification method Methods 0.000 title claims description 32
- 238000000034 method Methods 0.000 claims description 21
- 230000004044 response Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 description 11
- 238000005070 sampling Methods 0.000 description 11
- 238000012935 Averaging Methods 0.000 description 10
- 230000001413 cellular effect Effects 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
Abstract
Description
Claims (12)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/358,884 US6160449A (en) | 1999-07-22 | 1999-07-22 | Power amplifying circuit with load adjust for control of adjacent and alternate channel power |
US09/358,884 | 1999-07-22 | ||
US09/358884 | 1999-07-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1282143A CN1282143A (zh) | 2001-01-31 |
CN1185788C true CN1185788C (zh) | 2005-01-19 |
Family
ID=23411447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB001213474A Expired - Lifetime CN1185788C (zh) | 1999-07-22 | 2000-07-21 | 具有负载调整以控制相邻和相间信道功率的功率放大电路 |
Country Status (8)
Country | Link |
---|---|
US (1) | US6160449A (zh) |
JP (1) | JP4611496B2 (zh) |
KR (1) | KR100372856B1 (zh) |
CN (1) | CN1185788C (zh) |
BR (1) | BR0003788B1 (zh) |
DE (1) | DE10035060B4 (zh) |
FR (1) | FR2797360B1 (zh) |
GB (1) | GB2352897B (zh) |
Families Citing this family (86)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6525605B2 (en) * | 1998-08-19 | 2003-02-25 | Harris Corporation | Power amplifier system having frequency and amplifier failure compensation |
US6349216B1 (en) * | 1999-07-22 | 2002-02-19 | Motorola, Inc. | Load envelope following amplifier system |
US6556814B1 (en) * | 1999-07-22 | 2003-04-29 | Motorola, Inc. | Memory-based amplifier load adjust system |
US7130579B1 (en) * | 1999-10-21 | 2006-10-31 | Broadcom Corporation | Adaptive radio transceiver with a wide tuning range VCO |
US7555263B1 (en) | 1999-10-21 | 2009-06-30 | Broadcom Corporation | Adaptive radio transceiver |
US6856199B2 (en) * | 2000-10-10 | 2005-02-15 | California Institute Of Technology | Reconfigurable distributed active transformers |
GB2368737B (en) * | 2000-10-31 | 2004-11-10 | Roke Manor Research | Method and apparatus for controlling an amplifier |
US6504426B2 (en) | 2001-03-28 | 2003-01-07 | Guy Picha | Methods and systems for power amplifying of signals |
DE60137831D1 (de) * | 2001-04-06 | 2009-04-16 | Ericsson Telefon Ab L M | Methode und Einrichtung zur Verbesserung des Wirkungsgrades in einem Sender |
US6963241B2 (en) | 2001-04-06 | 2005-11-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for increasing the efficiency of a transmitter |
US6680652B2 (en) * | 2001-08-06 | 2004-01-20 | Rf Micro Devices, Inc. | Load switching for transmissions with different peak-to-average power ratios |
US7362818B1 (en) * | 2001-08-30 | 2008-04-22 | Nortel Networks Limited | Amplitude and phase comparator for microwave power amplifier |
US7113033B2 (en) * | 2002-01-31 | 2006-09-26 | Qualcomm Incorporated | Variable impedance load for a variable gain radio frequency amplifier |
US6642797B1 (en) * | 2002-04-25 | 2003-11-04 | Agere Systems, Inc. | Normalization methods for automatic requency compensation in bluetooth applications |
FI20020990A (fi) * | 2002-05-27 | 2003-11-28 | Nokia Corp | Menetelmä signaalin tehon säätämiseksi radiojärjestelmän lähettimessä ja radiojärjestelmän lähetin |
DE60226317T2 (de) * | 2002-08-01 | 2009-06-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Schaltung für leistungsverstärker |
US6977562B2 (en) * | 2002-09-19 | 2005-12-20 | Agilent Technologies, Inc. | Self-tuned matching network for high efficient power amplifiers |
US7727181B2 (en) | 2002-10-09 | 2010-06-01 | Abbott Diabetes Care Inc. | Fluid delivery device with autocalibration |
US7993108B2 (en) | 2002-10-09 | 2011-08-09 | Abbott Diabetes Care Inc. | Variable volume, shape memory actuated insulin dispensing pump |
AU2003279237A1 (en) | 2002-10-09 | 2004-05-04 | Therasense, Inc. | Fluid delivery device, system and method |
US6794935B2 (en) | 2002-10-17 | 2004-09-21 | Motorola Inc. | Power amplification circuit and method for supplying power at a plurality of desired power output levels |
DE10260291A1 (de) * | 2002-12-20 | 2004-07-01 | Siemens Ag | Elektronische Schaltung zur Informantionsübertragung |
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 |
US7679407B2 (en) * | 2003-04-28 | 2010-03-16 | Abbott Diabetes Care Inc. | Method and apparatus for providing peak detection circuitry for data communication systems |
US8071028B2 (en) * | 2003-06-12 | 2011-12-06 | Abbott Diabetes Care Inc. | Method and apparatus for providing power management in data communication systems |
US7202747B2 (en) * | 2003-08-05 | 2007-04-10 | Agile Materials And Technologies, Inc. | Self-tuning variable impedance circuit for impedance matching of power amplifiers |
US7215972B2 (en) * | 2003-12-09 | 2007-05-08 | Freescale Semiconductor, Inc. | Adaptive transmit power control system |
US8521204B2 (en) * | 2004-09-30 | 2013-08-27 | Motorola Mobility Llc | Signal configuration based transmitter adjustment in wireless communication devices |
US7706467B2 (en) | 2004-12-17 | 2010-04-27 | Andrew Llc | Transmitter with an envelope tracking power amplifier utilizing digital predistortion of the signal envelope |
US7148749B2 (en) * | 2005-01-31 | 2006-12-12 | Freescale Semiconductor, Inc. | Closed loop power control with high dynamic range |
US20060199553A1 (en) * | 2005-03-07 | 2006-09-07 | Andrew Corporation | Integrated transceiver with envelope tracking |
WO2006102412A2 (en) | 2005-03-21 | 2006-09-28 | Abbott Diabetes Care, Inc. | Method and system for providing integrated medication infusion and analyte monitoring system |
US7346317B2 (en) * | 2005-04-04 | 2008-03-18 | Freescale Semiconductor, Inc. | Dynamic gain and phase compensation for power amplifier load switching |
US7768408B2 (en) | 2005-05-17 | 2010-08-03 | Abbott Diabetes Care Inc. | Method and system for providing data management in data monitoring system |
US8611835B2 (en) * | 2005-05-20 | 2013-12-17 | Qualcomm Incorporated | Method and apparatus for sensing the envelope of high level multi frequency band RF signals |
US7620437B2 (en) | 2005-06-03 | 2009-11-17 | Abbott Diabetes Care Inc. | Method and apparatus for providing rechargeable power in data monitoring and management systems |
US20060280261A1 (en) * | 2005-06-10 | 2006-12-14 | M/A-Com Eurotec Bv. | System and method for controlling power output from a power amplifier |
US7756561B2 (en) | 2005-09-30 | 2010-07-13 | Abbott Diabetes Care Inc. | Method and apparatus for providing rechargeable power in data monitoring and management systems |
JP2007104280A (ja) * | 2005-10-04 | 2007-04-19 | Nec Electronics Corp | 高周波電力増幅回路 |
US7583190B2 (en) | 2005-10-31 | 2009-09-01 | Abbott Diabetes Care Inc. | Method and apparatus for providing data communication in data monitoring and management systems |
KR101229353B1 (ko) * | 2005-11-03 | 2013-02-05 | 엘지전자 주식회사 | 휴대용 단말기 및 그의 파워앰프 정합방법 |
WO2007060675A1 (en) * | 2005-11-28 | 2007-05-31 | Paragon Communications Ltd. | Method and apparatus for optimizing current consumption of amplifiers with power control |
US8145251B2 (en) | 2006-01-23 | 2012-03-27 | Motorola Mobility, Inc. | Power control in schedulable wireless communication terminal |
US20070173260A1 (en) * | 2006-01-23 | 2007-07-26 | Love Robert T | Wireless communication network scheduling |
US7634240B2 (en) * | 2006-01-31 | 2009-12-15 | Motorola, Inc. | Method and apparatus for controlling a supply voltage to a power amplifier |
US8344966B2 (en) | 2006-01-31 | 2013-01-01 | Abbott Diabetes Care Inc. | Method and system for providing a fault tolerant display unit in an electronic device |
US7956683B2 (en) * | 2006-06-09 | 2011-06-07 | Telefonaktiebolaget Lm Ericsson (Publ) | High efficiency linear power amplifiers with load compensation |
US7546817B2 (en) * | 2006-07-21 | 2009-06-16 | Radio Systems Corporation | Animal containment transmitter system |
US9622190B2 (en) | 2006-07-25 | 2017-04-11 | Google Technology Holdings LLC | Spectrum emission level variation in schedulable wireless communication terminal |
US20080025254A1 (en) * | 2006-07-25 | 2008-01-31 | Motorola Inc | Spectrum emission level variation in schedulable wireless communication terminal |
US8579853B2 (en) | 2006-10-31 | 2013-11-12 | Abbott Diabetes Care Inc. | Infusion devices and methods |
US7965140B2 (en) * | 2007-01-24 | 2011-06-21 | Nec Corporation | Power amplifier |
EP2097920B1 (de) * | 2007-07-23 | 2017-08-09 | TRUMPF Hüttinger GmbH + Co. KG | Plasmaversorgungseinrichtung |
US8068797B2 (en) * | 2007-09-28 | 2011-11-29 | Freescale Semiconductor, Inc. | Gain control methods for wireless devices and transmitters |
US8275151B2 (en) * | 2007-12-19 | 2012-09-25 | Agere Systems Inc. | Speakerphone using adaptive phase rotation |
TW200932194A (en) * | 2008-01-29 | 2009-08-01 | Univ Nat Taiwan | A feed-forward automatic-gain control amplifier (FFAGCA) for biomedical application |
US7768353B2 (en) | 2008-06-13 | 2010-08-03 | Samsung Electro-Mechanics Company, Ltd. | Systems and methods for switching mode power amplifier control |
WO2010020833A1 (en) * | 2008-08-20 | 2010-02-25 | Freescale Semiconductor, Inc. | Wireless communication unit, integrated circuit and method of power control of a power amplifier therefor |
WO2010035065A1 (en) * | 2008-09-24 | 2010-04-01 | Freescale Semiconductor, Inc. | Wireless communication unit, integrated circuit and method of power control of a power amplifier therefor |
US8140027B2 (en) * | 2008-10-16 | 2012-03-20 | Texas Instruments Incorporated | Automatic frequency tuning system and method for an FM-band transmit power amplifier |
CN101404638B (zh) * | 2008-11-10 | 2011-04-20 | 华为技术有限公司 | 一种提高正交频分复用发信机效率的方法和装置 |
US8560082B2 (en) | 2009-01-30 | 2013-10-15 | Abbott Diabetes Care Inc. | Computerized determination of insulin pump therapy parameters using real time and retrospective data processing |
US8270921B2 (en) * | 2009-04-27 | 2012-09-18 | Csr Technology Inc. | Systems and methods for tuning an antenna for a frequency modulation transceiver |
WO2010129375A1 (en) | 2009-04-28 | 2010-11-11 | Abbott Diabetes Care Inc. | Closed loop blood glucose control algorithm analysis |
EP4276652A3 (en) | 2009-07-23 | 2024-01-31 | Abbott Diabetes Care, Inc. | Real time management of data relating to physiological control of glucose levels |
CN102577107B (zh) | 2009-10-06 | 2015-06-10 | 富士通株式会社 | PAPR(Peak-to-Average Power Ratio)确定装置以及通信装置 |
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 |
US9565655B2 (en) | 2011-04-13 | 2017-02-07 | Google Technology Holdings LLC | Method and apparatus to detect the transmission bandwidth configuration of a channel in connection with reducing interference between channels in wireless communication systems |
US8934500B2 (en) | 2011-04-13 | 2015-01-13 | Motorola Mobility Llc | Method and apparatus using two radio access technologies for scheduling resources in wireless communication systems |
JP5336554B2 (ja) * | 2011-06-21 | 2013-11-06 | 日本電信電話株式会社 | 自動利得調整回路 |
CN103563252B (zh) * | 2011-06-30 | 2016-08-17 | 日本电信电话株式会社 | 自动增益控制电路 |
WO2013075727A1 (en) | 2011-11-22 | 2013-05-30 | Andrew Wireless Systems Gmbh | Adaptive supply voltage for a power amplifier |
US8874052B2 (en) | 2012-11-15 | 2014-10-28 | Motorola Mobility Llc | Method and apparatus for improving efficiency and distortion leakage in a wireless power amplifier |
US8804873B1 (en) * | 2013-02-13 | 2014-08-12 | Crestcom, Inc. | Communication system and method with PAPR; and backoff configured for equilibrium |
CN103281278B (zh) * | 2013-04-24 | 2017-03-22 | 东莞宇龙通信科技有限公司 | Lte通信发射系统、接收系统及通信终端 |
KR102094469B1 (ko) | 2013-12-10 | 2020-03-27 | 삼성전자주식회사 | 디지털-아날로그 변환 장치 및 방법 |
KR102188059B1 (ko) | 2013-12-23 | 2020-12-07 | 삼성전자 주식회사 | Ldo 레귤레이터, 전원 관리 시스템 및 ldo 전압 제어 방법 |
US20150236877A1 (en) * | 2014-02-14 | 2015-08-20 | Mediatek Inc. | Methods and apparatus for envelope tracking system |
US9520907B2 (en) | 2014-02-16 | 2016-12-13 | Mediatek Inc. | Methods and apparatus for envelope tracking system |
CN105654014B (zh) * | 2015-12-30 | 2018-02-02 | 广州中大微电子有限公司 | 一种可兼容高低速信号解调的射频信号解调电路 |
KR102483640B1 (ko) * | 2016-07-04 | 2023-01-02 | 삼성전자주식회사 | 주파수 보정 방법 및 장치 |
KR102554150B1 (ko) * | 2016-11-21 | 2023-07-12 | 삼성전자주식회사 | 수신기 |
US11848653B2 (en) * | 2018-05-18 | 2023-12-19 | Macom Technology Solutions Holdings, Inc. | Method and apparatus to speed convergence and control behavior of digital control loop |
US10901009B2 (en) | 2019-02-21 | 2021-01-26 | Shenzhen GOODIX Technology Co., Ltd. | Power detector for radiofrequency power amplifier circuits |
US20220214385A1 (en) * | 2021-01-04 | 2022-07-07 | Molex CVS Bochum GmbH | Methods and systems of power detection |
Family Cites Families (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4041395A (en) * | 1976-08-02 | 1977-08-09 | Integral Engineering & Manufacturing Corporation | Transmitter performance monitor and antenna matching system |
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 |
US4370622A (en) * | 1981-03-23 | 1983-01-25 | Rockwell International Corporation | IMD Limiter |
IT1138380B (it) * | 1981-05-21 | 1986-09-17 | Innocenti Santeustacchio Spa | Laminatoio reversibile di limitata potenzialita'particolarmente per la laminazione a caldo di acciai speciali e di metalli non ferrosi |
US4356458A (en) * | 1981-08-31 | 1982-10-26 | Harry H. Leveen | Automatic impedance matching apparatus |
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 |
CA2035455C (en) * | 1989-06-30 | 1995-08-22 | Kouji Chiba | Linear transmitter |
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 |
WO1992011702A1 (en) * | 1990-12-17 | 1992-07-09 | Motorola, Inc. | Dynamically biased amplifier |
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 |
JPH0746064A (ja) * | 1993-07-29 | 1995-02-14 | Nec Corp | 負荷整合回路可変型高効率マイクロ波増幅器 |
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 |
JPH07240638A (ja) * | 1994-03-01 | 1995-09-12 | Sumitomo Electric Ind Ltd | 高周波増幅器 |
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 |
US5742201A (en) * | 1996-01-30 | 1998-04-21 | Spectrian | Polar envelope correction mechanism for enhancing linearity of RF/microwave power amplifier |
US6112059A (en) * | 1997-11-12 | 2000-08-29 | Motorola, Inc. | Off-channel leakage power monitor apparatus and method |
JPH11220338A (ja) * | 1998-01-30 | 1999-08-10 | Matsushita Electric Ind Co Ltd | 高周波電力増幅器 |
JP2000004173A (ja) * | 1998-06-17 | 2000-01-07 | Denso Corp | デジタル送信機の歪検出方法及び装置 |
-
1999
- 1999-07-22 US US09/358,884 patent/US6160449A/en not_active Expired - Lifetime
-
2000
- 2000-07-07 JP JP2000206604A patent/JP4611496B2/ja not_active Expired - Lifetime
- 2000-07-13 FR FR0009161A patent/FR2797360B1/fr not_active Expired - Fee Related
- 2000-07-14 GB GB0017436A patent/GB2352897B/en not_active Expired - Lifetime
- 2000-07-17 DE DE10035060A patent/DE10035060B4/de not_active Expired - Lifetime
- 2000-07-21 CN CNB001213474A patent/CN1185788C/zh not_active Expired - Lifetime
- 2000-07-21 BR BRPI0003788-5A patent/BR0003788B1/pt not_active IP Right Cessation
- 2000-07-21 KR KR10-2000-0041870A patent/KR100372856B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB2352897B (en) | 2001-09-05 |
DE10035060A1 (de) | 2001-04-12 |
JP4611496B2 (ja) | 2011-01-12 |
JP2001068940A (ja) | 2001-03-16 |
GB2352897A (en) | 2001-02-07 |
FR2797360B1 (fr) | 2003-10-31 |
CN1282143A (zh) | 2001-01-31 |
BR0003788B1 (pt) | 2013-02-19 |
US6160449A (en) | 2000-12-12 |
FR2797360A1 (fr) | 2001-02-09 |
KR100372856B1 (ko) | 2003-02-19 |
DE10035060B4 (de) | 2005-06-23 |
BR0003788A (pt) | 2001-03-13 |
KR20010015391A (ko) | 2001-02-26 |
GB0017436D0 (en) | 2000-08-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1185788C (zh) | 具有负载调整以控制相邻和相间信道功率的功率放大电路 | |
CN1164027C (zh) | 具有供电调整以控制相邻和相间信道功率的功率放大电路 | |
CN1223080C (zh) | 负载包络跟随放大器系统 | |
CN1206806C (zh) | 具有负载控制以产生幅度包络的放大器系统 | |
CN1136665C (zh) | 可编程线性接收机和在接收机中提供可编程线性的方法 | |
JP5193027B2 (ja) | 電力増幅器負荷切り替えのための動的利得及び位相補償 | |
CN1871791A (zh) | 移动终端内自动功率控制的参考信号的附加调整 | |
CN1819471A (zh) | 具有可变预失真的极化调制器的发射/接收装置 | |
KR20130040659A (ko) | 송신기에서 전원변조 교정을 위한 장치 및 방법 | |
CN104025452B (zh) | 高频信号处理装置及无线通信装置 | |
US7583940B2 (en) | Transmission circuit and communication apparatus employing the same | |
EP2127242A1 (en) | Predistortion correction loop-back based on high linearity and low linearity modes | |
CN1774857A (zh) | 射频信号的有效调制 | |
CN1681198A (zh) | 用于射频功率放大器的动态偏置 | |
US6680652B2 (en) | Load switching for transmissions with different peak-to-average power ratios | |
US6675000B1 (en) | Radio communication apparatus and transmission power control method therein | |
CN1792073A (zh) | 无线通信设备的qam发射机单元的自动功率控制电路 | |
US20110250853A1 (en) | Operating point setting of an amplifier | |
US20100184389A1 (en) | Wireless communication unit, integrated circuit and method for biasing a power amplifier | |
CN1833367A (zh) | 发送装置、发送功率控制方法、以及无线电通信装置 | |
US9853608B2 (en) | Temperature compensation technique for envelope tracking system | |
CN1266833C (zh) | 用于功率放大器的工作点调整的电路装置和方法 | |
US6507244B2 (en) | Transmitter with a sliding compression point | |
KR20140076150A (ko) | 신호 송신 장치에서 DC 오프셋 calibration 장치 및 방법 | |
CN100452645C (zh) | 功率放大装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: MOTOROLA MOBILITY CO., LTD. Free format text: FORMER OWNER: MOTOROLA INC. Effective date: 20110127 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20110127 Address after: Illinois State Patentee after: MOTOROLA MOBILITY, Inc. Address before: Illinois, USA Patentee before: Motorola, Inc. |
|
C41 | Transfer of patent application or patent right or utility model | ||
C56 | Change in the name or address of the patentee | ||
CP01 | Change in the name or title of a patent holder |
Address after: Illinois State Patentee after: MOTOROLA MOBILITY LLC Address before: Illinois State Patentee before: MOTOROLA MOBILITY, Inc. |
|
TR01 | Transfer of patent right |
Effective date of registration: 20160301 Address after: California, USA Patentee after: Google Technology Holdings LLC Address before: Illinois State Patentee before: MOTOROLA MOBILITY LLC |
|
CX01 | Expiry of patent term |
Granted publication date: 20050119 |
|
CX01 | Expiry of patent term |