IL146429A - Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform - Google Patents

Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform

Info

Publication number
IL146429A
IL146429A IL14642900A IL14642900A IL146429A IL 146429 A IL146429 A IL 146429A IL 14642900 A IL14642900 A IL 14642900A IL 14642900 A IL14642900 A IL 14642900A IL 146429 A IL146429 A IL 146429A
Authority
IL
Israel
Prior art keywords
waveform
amplified
frequency portion
high frequency
amplitude waveform
Prior art date
Application number
IL14642900A
Other languages
English (en)
Other versions
IL146429A0 (en
Original Assignee
Ericsson Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ericsson Inc filed Critical Ericsson Inc
Publication of IL146429A0 publication Critical patent/IL146429A0/xx
Publication of IL146429A publication Critical patent/IL146429A/xx

Links

Classifications

    • 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
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/331—Sigma delta modulation being used in an amplifying circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Amplitude Modulation (AREA)
  • Transmitters (AREA)
IL14642900A 1999-05-17 2000-04-11 Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform IL146429A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/312,469 US6590940B1 (en) 1999-05-17 1999-05-17 Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform
PCT/US2000/009662 WO2000070746A1 (en) 1999-05-17 2000-04-11 Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform

Publications (2)

Publication Number Publication Date
IL146429A0 IL146429A0 (en) 2002-07-25
IL146429A true IL146429A (en) 2005-09-25

Family

ID=23211602

Family Applications (1)

Application Number Title Priority Date Filing Date
IL14642900A IL146429A (en) 1999-05-17 2000-04-11 Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform

Country Status (12)

Country Link
US (1) US6590940B1 (tr)
EP (1) EP1183776B1 (tr)
JP (1) JP2003500873A (tr)
CN (1) CN1218474C (tr)
AT (1) ATE226372T1 (tr)
AU (1) AU4340300A (tr)
DE (1) DE60000621T2 (tr)
HK (1) HK1049073B (tr)
IL (1) IL146429A (tr)
MY (1) MY122659A (tr)
TR (1) TR200103292T2 (tr)
WO (1) WO2000070746A1 (tr)

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EP1067676B1 (en) * 1999-06-30 2009-06-17 Alcatel Lucent Method for linearising a power amplifier over a wide frequency band
US6975687B2 (en) * 2000-06-16 2005-12-13 Hughes Electronics Corporation Linearized offset QPSK modulation utilizing a sigma-delta based frequency modulator
DE10056472A1 (de) * 2000-11-15 2002-05-29 Infineon Technologies Ag Polar-Loop-Sendeschaltung
EP1235403B1 (en) 2001-02-22 2012-12-05 Panasonic Corporation Combined frequency and amplitude modulation
US6665525B2 (en) * 2001-05-29 2003-12-16 Ericsson Inc. High-level modulation method and apparatus
US7340265B2 (en) * 2002-02-28 2008-03-04 Atheros Communications, Inc. Method and apparatus for transient frequency distortion compensation
US7801244B2 (en) * 2002-05-16 2010-09-21 Rf Micro Devices, Inc. Am to AM correction system for polar modulator
US20040047429A1 (en) * 2002-09-06 2004-03-11 Weichan Hsu RF digital transmitter
US7555057B2 (en) * 2003-01-17 2009-06-30 Texas Instruments Incorporated Predistortion calibration in a transceiver assembly
ATE551773T1 (de) * 2003-02-20 2012-04-15 Sony Ericsson Mobile Comm Ab Effizienter modulation von hochfrequenzsignalen
JP4589665B2 (ja) * 2003-08-29 2010-12-01 ルネサスエレクトロニクス株式会社 増幅器及びそれを用いた高周波電力増幅器
JP4148077B2 (ja) * 2003-09-10 2008-09-10 沖電気工業株式会社 Ｄ級信号増幅回路
US7068096B2 (en) * 2003-12-08 2006-06-27 Northrop Grumman Corporation EER modulator with power amplifier having feedback loop providing soft output impedance
US7915954B2 (en) * 2004-01-16 2011-03-29 Qualcomm, Incorporated Amplifier predistortion and autocalibration method and apparatus
US7383027B2 (en) 2004-01-26 2008-06-03 Matsushita Electric Industrial Co., Ltd. Transmission circuit
JP4518968B2 (ja) * 2004-01-26 2010-08-04 パナソニック株式会社 送信回路
JP3961498B2 (ja) 2004-02-27 2007-08-22 松下電器産業株式会社 高周波回路装置
US20050235159A1 (en) * 2004-03-16 2005-10-20 Krishnasamy Anandakumar Wireless transceiver system for computer input devices
DE102004047497A1 (de) * 2004-09-23 2006-04-06 Siemens Ag Leistungsverstärkereinheit, mobiles Telekommunikationsendgerät und zugehöriges Betriebsverfahren
KR20080003903A (ko) * 2005-04-20 2008-01-08 엔엑스피 비 브이 전원 시스템
US8411788B2 (en) * 2005-11-18 2013-04-02 Qualcomm, Incorporated Digital transmitters for wireless communication
JP4938597B2 (ja) * 2006-09-19 2012-05-23 パナソニック株式会社 送信回路及び通信機器
WO2008105073A1 (ja) * 2007-02-27 2008-09-04 Panasonic Corporation 送信装置
TWI354439B (en) * 2007-06-04 2011-12-11 Holtek Semiconductor Inc Ac signal producer and method thereof
JP5022792B2 (ja) * 2007-07-02 2012-09-12 株式会社日立国際電気 Ｄｃｄｃコンバータユニット、電力増幅器、及び基地局装置
US8233850B1 (en) * 2008-09-26 2012-07-31 Rockwell Collins, Inc. Broadband power amplifier with partial-envelope transference
US8433267B2 (en) 2009-07-15 2013-04-30 Panasonic Corporation Amplitude modulator
JP5526884B2 (ja) * 2010-03-12 2014-06-18 富士通株式会社 増幅器、増幅器制御方法及び送信機
US8981851B2 (en) 2010-08-03 2015-03-17 Nec Corporation Power supply modulator and method for controlling same
JPWO2012046668A1 (ja) * 2010-10-05 2014-02-24 日本電気株式会社 電力増幅器、高周波電力増幅装置、および増幅制御方法
US8975960B2 (en) 2011-02-01 2015-03-10 Mediatek Singapore Pte. Ltd. Integrated circuit wireless communication unit and method for providing a power supply
US9166538B2 (en) * 2011-02-01 2015-10-20 Mediatek Singapore Pte. Ltd. Integrated circuit wireless communication unit and method for providing a power supply
US8665018B2 (en) 2011-02-01 2014-03-04 Mediatek Singapore Pte. Ltd. Integrated circuit, wireless communication unit and method for a differential interface for an envelope tracking signal
US8803605B2 (en) * 2011-02-01 2014-08-12 Mediatek Singapore Pte. Ltd. Integrated circuit, wireless communication unit and method for providing a power supply
JP5776794B2 (ja) * 2011-12-19 2015-09-09 富士通株式会社 増幅回路
JP6115477B2 (ja) * 2012-02-03 2017-04-19 日本電気株式会社 電源装置及びこれを用いた送信装置
GB2510393A (en) 2013-02-01 2014-08-06 Nujira Ltd An envelope-tracking amplifier with a linear amplifier having an output offset current for improved efficiency
CN103518322B (zh) * 2013-03-26 2017-05-31 华为技术有限公司 数字包络信号放大电路、方法及包络跟踪功率放大器
US9584349B2 (en) 2013-05-31 2017-02-28 Nec Corporation Transmission circuit
CN111654243B (zh) * 2019-03-04 2023-03-03 华为技术有限公司 功率放大装置、波束成形***、发射机和基站
KR102345966B1 (ko) * 2019-11-08 2022-01-03 주식회사 인스파워 고출력 증폭기의 광대역 선형화를 위한 장치 및 방법

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US3900823A (en) * 1973-03-28 1975-08-19 Nathan O Sokal Amplifying and processing apparatus for modulated carrier signals
JPS6052607B2 (ja) * 1979-05-10 1985-11-20 ヤマハ株式会社 増幅器
US4972440A (en) 1988-09-23 1990-11-20 Hughes Aircraft Company Transmitter circuit for efficiently transmitting communication traffic via phase modulated carrier signals
US5091919A (en) 1989-02-08 1992-02-25 Nokia-Mobira Oy Transmitter arrangement for digitally modulated signals
US5105164A (en) * 1989-02-28 1992-04-14 At&T Bell Laboratories High efficiency uhf linear power amplifier
JPH0654877B2 (ja) * 1989-09-19 1994-07-20 日本電信電話株式会社 線形送信装置
US5430416A (en) * 1994-02-23 1995-07-04 Motorola Power amplifier having nested amplitude modulation controller and phase modulation controller
US5705959A (en) 1996-10-08 1998-01-06 The United States Of America As Represented By The Secretary Of The Air Force High efficiency low distortion amplification
US5847602A (en) 1997-03-03 1998-12-08 Hewlett-Packard Company Method and apparatus for linearizing an efficient class D/E power amplifier using delta modulation
US6084468A (en) * 1997-10-06 2000-07-04 Motorola, Inc. Method and apparatus for high efficiency wideband power amplification
US6191653B1 (en) * 1998-11-18 2001-02-20 Ericsson Inc. Circuit and method for linearizing amplitude modulation in a power amplifier
US6295442B1 (en) 1998-12-07 2001-09-25 Ericsson Inc. Amplitude modulation to phase modulation cancellation method in an RF amplifier
US6181199B1 (en) 1999-01-07 2001-01-30 Ericsson Inc. Power IQ modulation systems and methods
US6449465B1 (en) * 1999-12-20 2002-09-10 Motorola, Inc. Method and apparatus for linear amplification of a radio frequency signal

Also Published As

Publication number Publication date
ATE226372T1 (de) 2002-11-15
EP1183776A1 (en) 2002-03-06
US6590940B1 (en) 2003-07-08
WO2000070746A1 (en) 2000-11-23
HK1049073A1 (en) 2003-04-25
TR200103292T2 (tr) 2002-04-22
DE60000621T2 (de) 2003-06-12
JP2003500873A (ja) 2003-01-07
DE60000621D1 (de) 2002-11-21
AU4340300A (en) 2000-12-05
EP1183776B1 (en) 2002-10-16
IL146429A0 (en) 2002-07-25
WO2000070746A8 (en) 2001-09-13
HK1049073B (zh) 2006-04-21
MY122659A (en) 2006-04-29
CN1361938A (zh) 2002-07-31
CN1218474C (zh) 2005-09-07

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