DE69736107D1 - Vorspannungseinstellung für leistungsverstärker - Google Patents

Vorspannungseinstellung für leistungsverstärker

Info

Publication number
DE69736107D1
DE69736107D1 DE69736107T DE69736107T DE69736107D1 DE 69736107 D1 DE69736107 D1 DE 69736107D1 DE 69736107 T DE69736107 T DE 69736107T DE 69736107 T DE69736107 T DE 69736107T DE 69736107 D1 DE69736107 D1 DE 69736107D1
Authority
DE
Germany
Prior art keywords
power amplifiers
voltage adjustment
adjustment
voltage
amplifiers
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
Application number
DE69736107T
Other languages
English (en)
Other versions
DE69736107T2 (de
Inventor
Edward Mitzlaff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Mobility LLC
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of DE69736107D1 publication Critical patent/DE69736107D1/de
Application granted granted Critical
Publication of DE69736107T2 publication Critical patent/DE69736107T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power 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
    • H03F1/0261—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
    • H03F1/0288—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
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • 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
    • H03F2200/18—Indexing scheme relating to amplifiers the bias of the gate of a FET being controlled by a control signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/432—Two or more amplifiers of different type are coupled in parallel at the input or output, e.g. a class D and a linear amplifier, a class B and a class A amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
DE69736107T 1996-06-28 1997-04-16 Vorspannungseinstellung für leistungsverstärker Expired - Lifetime DE69736107T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/672,710 US5757229A (en) 1996-06-28 1996-06-28 Bias circuit for a power amplifier
PCT/US1997/006165 WO1998000912A1 (en) 1996-06-28 1997-04-16 Bias circuit for a power amplifier
US672710 2000-09-29

Publications (2)

Publication Number Publication Date
DE69736107D1 true DE69736107D1 (de) 2006-07-27
DE69736107T2 DE69736107T2 (de) 2006-11-09

Family

ID=24699688

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69736107T Expired - Lifetime DE69736107T2 (de) 1996-06-28 1997-04-16 Vorspannungseinstellung für leistungsverstärker

Country Status (9)

Country Link
US (1) US5757229A (de)
EP (1) EP0908006B1 (de)
JP (1) JP4210332B2 (de)
KR (1) KR100284798B1 (de)
AU (1) AU702964B2 (de)
CA (1) CA2257887A1 (de)
DE (1) DE69736107T2 (de)
MY (1) MY116892A (de)
WO (1) WO1998000912A1 (de)

Families Citing this family (115)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6085074A (en) * 1997-02-28 2000-07-04 Motorola, Inc. Apparatus and method for amplifying an amplitude-varying signal
US6097252A (en) * 1997-06-02 2000-08-01 Motorola, Inc. Method and apparatus for high efficiency power amplification
US5861777A (en) * 1997-07-02 1999-01-19 Motorola, Inc. Method and apparatus for compensation of phase distortion in power amplifiers
US5886575A (en) * 1997-09-30 1999-03-23 Motorola, Inc. Apparatus and method for amplifying a signal
US6084468A (en) * 1997-10-06 2000-07-04 Motorola, Inc. Method and apparatus for high efficiency wideband power amplification
US6359506B1 (en) * 1998-04-02 2002-03-19 Ericsson Inc. Linear modulation using a linear and a non-linear amplifier
US6028485A (en) * 1998-08-03 2000-02-22 Motorola, Inc. Power amplification apparatus and method therefor
US6233440B1 (en) * 1998-08-05 2001-05-15 Triquint Semiconductor, Inc. RF power amplifier with variable bias current
KR100362925B1 (ko) * 1999-03-31 2002-11-29 가부시키가이샤 엔.티.티.도코모 피드포워드 증폭기
US6157253A (en) * 1999-09-03 2000-12-05 Motorola, Inc. High efficiency power amplifier circuit with wide dynamic backoff range
DE60039063D1 (de) * 1999-11-11 2008-07-10 Broadcom Corp Gigabit ethernet senderempfänger mit analoger eingangsschaltung
US6374092B1 (en) * 1999-12-04 2002-04-16 Motorola, Inc. Efficient multimode power amplifier
US6359504B1 (en) * 2000-01-28 2002-03-19 Lucent Technologies Inc. Power amplifier using upstream signal information
US6816003B2 (en) 2000-02-04 2004-11-09 The Trustees Of Columbia University In The City Of New York Circuits with dynamic biasing
US6320462B1 (en) * 2000-04-12 2001-11-20 Raytheon Company Amplifier circuit
KR20010104951A (ko) * 2000-05-17 2001-11-28 타이 중 치 비직조의 합성직물
SE516847C2 (sv) * 2000-07-07 2002-03-12 Ericsson Telefon Ab L M Sammansatt förstärkare samt sändare som innefattar en sådan förstärkare
SE516145C2 (sv) * 2000-06-06 2001-11-26 Ericsson Telefon Ab L M Sammansatt förstärkare
WO2002003543A1 (fr) * 2000-06-30 2002-01-10 Mitsubishi Denki Kabushiki Kaisha Amplificateur haute frequence
US6639463B1 (en) * 2000-08-24 2003-10-28 Lucent Technologies Inc. Adaptive power amplifier system and method
US6731173B1 (en) * 2000-10-23 2004-05-04 Skyworks Solutions, Inc. Doherty bias circuit to dynamically compensate for process and environmental variations
EP1202467B1 (de) * 2000-10-24 2004-07-07 Koninklijke Philips Electronics N.V. Signalsender mit Impulssteuerung der Verstärkung
US6384679B1 (en) * 2000-11-15 2002-05-07 National Semiconductor Corporation Rail-to-rail amplifier with reduced GM and compensating cap
US6731172B2 (en) * 2001-01-16 2004-05-04 Skyworks Solutions, Inc. Doherty power amplifier with integrated quarter wave transformer/combiner circuit
WO2002063768A1 (en) * 2001-02-05 2002-08-15 The Trustees Of Columbia University In The City Of New York Circuits with dynamic biasing
US6864742B2 (en) * 2001-06-08 2005-03-08 Northrop Grumman Corporation Application of the doherty amplifier as a predistortion circuit for linearizing microwave amplifiers
US6469581B1 (en) * 2001-06-08 2002-10-22 Trw Inc. HEMT-HBT doherty microwave amplifier
US20020186079A1 (en) * 2001-06-08 2002-12-12 Kobayashi Kevin W. Asymmetrically biased high linearity balanced amplifier
US6756844B2 (en) * 2001-08-07 2004-06-29 Hitachi Kokusai Electric Inc. Distortion compensation amplification apparatus of feed forward type and adaptive pre-distortion type
US6917246B2 (en) * 2001-09-10 2005-07-12 Skyworks Solutions, Inc. Doherty bias circuit to dynamically compensate for process and environmental variations
US6737922B2 (en) * 2002-01-28 2004-05-18 Cree Microwave, Inc. N-way RF power amplifier circuit with increased back-off capability and power added efficiency using unequal input power division
US6791417B2 (en) * 2002-01-28 2004-09-14 Cree Microwave, Inc. N-way RF power amplifier circuit with increased back-off capability and power added efficiency using selected phase lengths and output impedances
US6700444B2 (en) * 2002-01-28 2004-03-02 Cree Microwave, Inc. N-way RF power amplifier with increased backoff power and power added efficiency
KR100553252B1 (ko) * 2002-02-01 2006-02-20 아바고테크놀로지스코리아 주식회사 휴대용 단말기의 전력 증폭 장치
US6985704B2 (en) 2002-05-01 2006-01-10 Dali Yang System and method for digital memorized predistortion for wireless communication
US8472897B1 (en) 2006-12-22 2013-06-25 Dali Systems Co. Ltd. Power amplifier predistortion methods and apparatus
US8811917B2 (en) 2002-05-01 2014-08-19 Dali Systems Co. Ltd. Digital hybrid mode power amplifier system
US8380143B2 (en) * 2002-05-01 2013-02-19 Dali Systems Co. Ltd Power amplifier time-delay invariant predistortion methods and apparatus
SE524408C2 (sv) * 2002-06-19 2004-08-03 Ericsson Telefon Ab L M Effektiv generering av radiofrekventa strömmar
KR100450744B1 (ko) 2002-08-29 2004-10-01 학교법인 포항공과대학교 도허티 증폭기
KR100480496B1 (ko) * 2002-11-18 2005-04-07 학교법인 포항공과대학교 도허티 증폭기를 이용한 신호 증폭 장치
JP2004221646A (ja) 2003-01-09 2004-08-05 Nec Corp ドハ−ティ増幅器
KR20040079597A (ko) * 2003-03-08 2004-09-16 학교법인 포항공과대학교 적응 바이어스 제어 기술을 이용한 초고주파 도허티증폭장치
US7038539B2 (en) * 2003-05-06 2006-05-02 Powerwave Technologies, Inc. RF amplifier employing active load linearization
KR100830527B1 (ko) * 2003-09-17 2008-05-21 닛본 덴끼 가부시끼가이샤 증폭기
DE112004001976T5 (de) * 2003-10-21 2006-10-19 Wavics, Inc., Palo Alto Hochlinearität-Doherty-Kommunikationsverstärker mit Vorspannungssteuerung
US7339426B2 (en) * 2004-03-19 2008-03-04 Powerwave Technologies, Inc. High efficiency linear amplifier employing dynamically controlled back off
US7064615B2 (en) * 2004-03-24 2006-06-20 Freescale Semiconductor, Inc. Method and apparatus for doherty amplifier biasing
US7440733B2 (en) * 2004-04-09 2008-10-21 Powerwave Technologies, Inc. Constant gain nonlinear envelope tracking high efficiency linear amplifier
US7123096B2 (en) * 2004-05-26 2006-10-17 Raytheon Company Quadrature offset power amplifier
US20060017509A1 (en) * 2004-07-21 2006-01-26 Veitschegger William K Auxiliary transistor gate bias control system and method
US7327803B2 (en) 2004-10-22 2008-02-05 Parkervision, Inc. Systems and methods for vector power amplification
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
US7148746B2 (en) * 2004-10-26 2006-12-12 Andrew Corporation High efficiency amplifier
US7295065B2 (en) * 2004-11-18 2007-11-13 Beecem Communications Inc. High efficiency doherty amplifier with a segmented main amplifier
SE528473C2 (sv) * 2005-02-28 2006-11-21 Infineon Technologies Ag Monolitiskt integrerad effektförstärkaranordning
WO2007003219A1 (en) * 2005-06-30 2007-01-11 Freescale Semiconductor, Inc Wireless communication unit, integrated circuit and biasing circuit therefor
KR101122383B1 (ko) * 2005-08-01 2012-03-26 삼성전자주식회사 선형성 개선을 위한 멀티 모드용 전력 증폭기
JP2007053540A (ja) * 2005-08-17 2007-03-01 Nec Corp ドハティ型増幅器
US20070075780A1 (en) * 2005-10-05 2007-04-05 Enver Krvavac Apparatus and method for adaptive biasing of a Doherty amplifier
US8334722B2 (en) 2007-06-28 2012-12-18 Parkervision, Inc. Systems and methods of RF power transmission, modulation and amplification
US7911272B2 (en) 2007-06-19 2011-03-22 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
US8013675B2 (en) 2007-06-19 2011-09-06 Parkervision, Inc. Combiner-less multiple input single output (MISO) amplification with blended control
US9106316B2 (en) 2005-10-24 2015-08-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification
US20130078934A1 (en) 2011-04-08 2013-03-28 Gregory Rawlins Systems and Methods of RF Power Transmission, Modulation, and Amplification
US7831221B2 (en) * 2005-12-13 2010-11-09 Andrew Llc Predistortion system and amplifier for addressing group delay modulation
US8093946B2 (en) * 2006-03-17 2012-01-10 Nujira Limited Joint optimisation of supply and bias modulation
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
CN101479956B (zh) 2006-04-28 2013-07-31 大力系统有限公司 用于无线通信的高效率线性化功率放大器
JP4831571B2 (ja) * 2006-05-02 2011-12-07 富士通株式会社 増幅器ユニット及びその故障検出方法
US7518448B1 (en) * 2006-09-27 2009-04-14 Nortel Networks Limited Amplifier mode switch
US20080122542A1 (en) * 2006-11-27 2008-05-29 Gregory Bowles Enhanced amplifier with auxiliary path bias modulation
JP2008147857A (ja) * 2006-12-07 2008-06-26 Mitsubishi Electric Corp 高効率増幅器
CN101563840B (zh) * 2006-12-19 2012-06-06 三菱电机株式会社 电力放大装置
CN102017553B (zh) 2006-12-26 2014-10-15 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
US9026067B2 (en) 2007-04-23 2015-05-05 Dali Systems Co. Ltd. Remotely reconfigurable power amplifier system and method
US8274332B2 (en) * 2007-04-23 2012-09-25 Dali Systems Co. Ltd. N-way Doherty distributed power amplifier with power tracking
WO2008144017A1 (en) 2007-05-18 2008-11-27 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
US8224266B2 (en) 2007-08-30 2012-07-17 Dali Systems Co., Ltd. Power amplifier predistortion methods and apparatus using envelope and phase detector
JP5169122B2 (ja) * 2007-10-09 2013-03-27 住友電気工業株式会社 ドハティ増幅装置
EP2248255A4 (de) 2007-12-07 2014-05-28 Dali Systems Co Ltd Aus dem basisband abgeleitete hf-digital-vorverzerrung
JP4950083B2 (ja) * 2008-01-15 2012-06-13 ルネサスエレクトロニクス株式会社 高効率電力増幅器
JP5338262B2 (ja) * 2008-11-05 2013-11-13 日本電気株式会社 電力増幅器およびその増幅方法
US7944293B2 (en) * 2008-12-11 2011-05-17 Samsung Electro-Mechanics Company, Ltd. Systems and methods for an adaptive bias circuit for a differential power amplifier
KR101310993B1 (ko) 2009-01-26 2013-09-24 닛본 덴끼 가부시끼가이샤 고주파 증폭기, 무선 장치 및 제어 방법
EP2426816A1 (de) 2009-04-28 2012-03-07 Panasonic Corporation Leistungsverstärker
CN106160674A (zh) 2009-12-21 2016-11-23 大力系统有限公司 用于改善发射机与接收机之间的隔离的系统
US8351877B2 (en) 2010-12-21 2013-01-08 Dali Systems Co. Ltfd. Multi-band wideband power amplifier digital predistorition system and method
EP3068047A3 (de) 2009-12-21 2017-03-01 Dali Systems Co. Ltd. Modulationsagnostisches digitales hybridmodus-leistungsverstärkersystem und verfahren
US8542768B2 (en) 2009-12-21 2013-09-24 Dali Systems Co. Ltd. High efficiency, remotely reconfigurable remote radio head unit system and method for wireless communications
US8447245B2 (en) 2010-01-22 2013-05-21 Freescale Semiconductor, Inc. Radio frequency transmitter having an amplifier with power supply modulation
EP2372905B1 (de) * 2010-04-01 2012-06-20 Alcatel Lucent Doherty-Verstärkeranordnung mit verbessertem Wirkungsgrad
US8183929B2 (en) * 2010-04-09 2012-05-22 Viasat, Inc. Multi-chip doherty amplifier with integrated power detection
US8803599B2 (en) * 2010-05-26 2014-08-12 Stmicroelectronics, Inc. Dendrite resistant input bias network for metal oxide semiconductor field effect transistor (MOSFET) devices
JP5527047B2 (ja) 2010-06-29 2014-06-18 富士通株式会社 増幅装置
JP2012034134A (ja) * 2010-07-29 2012-02-16 Sumitomo Electric Device Innovations Inc 増幅器
KR101829517B1 (ko) 2010-09-14 2018-02-14 달리 시스템즈 씨오. 엘티디. 원격으로 재구성가능한 분산 안테나 시스템 및 방법
WO2012167111A2 (en) 2011-06-02 2012-12-06 Parkervision, Inc. Antenna control
US8829998B2 (en) * 2012-10-23 2014-09-09 Airspan Networks Inc. Doherty power amplifier
WO2014155501A1 (ja) * 2013-03-26 2014-10-02 日本電気株式会社 電力増幅装置および電力増幅方法
US9136804B2 (en) * 2013-07-29 2015-09-15 Freescale Semiconductor, Inc. Switch-mode amplifier
CN104348425A (zh) * 2013-07-31 2015-02-11 展讯通信（上海）有限公司 一种实现多个射频功率放大单元的自适应兼容系统及方法
JP2015046795A (ja) * 2013-08-28 2015-03-12 株式会社東芝 電力増幅装置、及び電力増幅装置の制御方法
KR20160058855A (ko) 2013-09-17 2016-05-25 파커비전, 인크. 정보를 포함하는 시간의 함수를 렌더링하기 위한 방법, 장치 및 시스템
JP2015104062A (ja) * 2013-11-27 2015-06-04 三菱電機株式会社 高効率増幅器
JP5833094B2 (ja) * 2013-12-26 2015-12-16 株式会社東芝 電力増幅装置、及び電力増幅装置の制御方法
WO2015106422A1 (en) 2014-01-16 2015-07-23 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for adjusting peak power capability
JP2015220680A (ja) * 2014-05-20 2015-12-07 三菱電機株式会社 高効率増幅器
US9806681B2 (en) * 2015-02-15 2017-10-31 Skyworks Solutions, Inc. Doherty power amplifier having AM-AM compensation
JP6776709B2 (ja) * 2016-08-04 2020-10-28 富士通株式会社 電力増幅装置、半導体集積回路および電力増幅装置の制御方法
KR102029558B1 (ko) * 2017-12-27 2019-10-07 삼성전기주식회사 광대역 선형화가 개선된 파워 증폭 장치
KR20200114745A (ko) * 2019-03-29 2020-10-07 삼성전자주식회사 전력증폭기 소손 방지를 위한 전압 보호 회로 및 이를 포함하는 전자 장치
US11190154B2 (en) * 2019-06-14 2021-11-30 Murata Manufacturing Co., Ltd. Power amplifier circuit
WO2024034682A1 (ja) * 2022-08-12 2024-02-15 株式会社村田製作所 ドハティ増幅回路

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2210028A (en) * 1936-04-01 1940-08-06 Bell Telephone Labor Inc Amplifier
BR9305438A (pt) * 1992-03-13 1994-08-02 Motorola Inc Rede combinada amplificadora de potência de sinal de radiofrequência (RF) e dispositivo de comunicações de sinal de radiofrequência de modo duplo
US5311143A (en) * 1992-07-02 1994-05-10 Motorola, Inc. RF amplifier bias control method and apparatus
US5420541A (en) * 1993-06-04 1995-05-30 Raytheon Company Microwave doherty amplifier
US5568086A (en) * 1995-05-25 1996-10-22 Motorola, Inc. Linear power amplifier for high efficiency multi-carrier performance

Also Published As

Publication number Publication date
AU2729297A (en) 1998-01-21
EP0908006A1 (de) 1999-04-14
US5757229A (en) 1998-05-26
AU702964B2 (en) 1999-03-11
CA2257887A1 (en) 1998-01-08
EP0908006B1 (de) 2006-06-14
KR20000022271A (ko) 2000-04-25
JP4210332B2 (ja) 2009-01-14
DE69736107T2 (de) 2006-11-09
WO1998000912A1 (en) 1998-01-08
JP2000513535A (ja) 2000-10-10
KR100284798B1 (ko) 2001-03-15
MY116892A (en) 2004-04-30
EP0908006A4 (de) 2001-08-08

Similar Documents

Publication Publication Date Title
DE69736107D1 (de) Vorspannungseinstellung für leistungsverstärker
DE69526144D1 (de) Leistungsverstärker
DE69727783D1 (de) Spannungsregler
DE69736529D1 (de) Halbleiteranordnung für hochspannung
DE69930780D1 (de) Leistungsverstärker
FI971051A0 (fi) Tehokas lineaaritehovahvistin
DE69931543D1 (de) Leistungsverstärker
DE59706073D1 (de) Verstellvorrichtung
DE69721414D1 (de) Operationsverstärker
DE69724795D1 (de) Lautsprechersantriebeinheiten
DE19983561T1 (de) Leistungsversorgung für Verstärker
DE69719207D1 (de) Steuerschaltung für hilfsstromversorgung
DE59706743D1 (de) Mehrbereichs-Spannungsnetzteil
DE69704107D1 (de) Träger für einen applikator
DE69532699D1 (de) Hochspannungssteuerung für Transfektion
DE69814309D1 (de) Niederspannungsverstärker
NO995112L (no) Effektforsterker
DE69715180D1 (de) Magnetanordnung für magnetrone
FI19992411A (fi) Feedforward kompensaation tehovahvistinta varten
DE69707940T2 (de) Ruhestromeinstellung für Verstärkerausgangsstufe
DE69738616D1 (de) Schaltanordnung für hochspannungsfreileitungen
DE69724552D1 (de) Leistungsverstärkerapparat
DE69709030D1 (de) Spannungsregler
DE69725098D1 (de) Leistungsverstärkervorrichtung
DE69728993D1 (de) Hochspannungssystem

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: MOTOROLA MOBILITY, INC. ( N.D. GES. D. STAATES, US