AU2001233893A1 - Modulator of phase and amplitude - Google Patents
Modulator of phase and amplitudeInfo
- Publication number
- AU2001233893A1 AU2001233893A1 AU2001233893A AU3389301A AU2001233893A1 AU 2001233893 A1 AU2001233893 A1 AU 2001233893A1 AU 2001233893 A AU2001233893 A AU 2001233893A AU 3389301 A AU3389301 A AU 3389301A AU 2001233893 A1 AU2001233893 A1 AU 2001233893A1
- Authority
- AU
- Australia
- Prior art keywords
- modulator
- amplitude
- phase
- 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.)
- Abandoned
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
- H03F1/0261—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
- H03F1/0227—Continuous control by using a signal derived from the input signal using supply converters
-
- 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
- H03F1/0266—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 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
- H03F1/02—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
- H03F1/0277—Selecting one or more amplifiers from a plurality of 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
-
- 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
-
- 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
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0004569.0 | 2000-02-25 | ||
GB0004569A GB2359681B (en) | 2000-02-25 | 2000-02-25 | Switched amplifier |
PCT/GB2001/000691 WO2001063745A2 (en) | 2000-02-25 | 2001-02-19 | Modulator of phase and amplitude |
Publications (1)
Publication Number | Publication Date |
---|---|
AU2001233893A1 true AU2001233893A1 (en) | 2001-09-03 |
Family
ID=9886465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2001233893A Abandoned AU2001233893A1 (en) | 2000-02-25 | 2001-02-19 | Modulator of phase and amplitude |
Country Status (4)
Country | Link |
---|---|
US (1) | US6794931B2 (en) |
AU (1) | AU2001233893A1 (en) |
GB (1) | GB2359681B (en) |
WO (1) | WO2001063745A2 (en) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7209528B2 (en) * | 2001-06-01 | 2007-04-24 | National Semiconductor, Inc. | Over-sampling A/D converter with adjacent channel power detection |
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 |
US7801244B2 (en) * | 2002-05-16 | 2010-09-21 | Rf Micro Devices, Inc. | Am to AM correction system for polar modulator |
US7123664B2 (en) * | 2002-09-17 | 2006-10-17 | Nokia Corporation | Multi-mode envelope restoration architecture for RF transmitters |
US7555057B2 (en) * | 2003-01-17 | 2009-06-30 | Texas Instruments Incorporated | Predistortion calibration in a transceiver assembly |
US7034614B2 (en) * | 2003-11-21 | 2006-04-25 | Northrop Grumman Corporation | Modified polar amplifier architecture |
US7541864B2 (en) * | 2004-06-04 | 2009-06-02 | Silicon Power Devices Aps | Power amplifier and pulse-width modulated amplifier |
JP2006173819A (en) * | 2004-12-14 | 2006-06-29 | Sharp Corp | Switching amplifier |
DE102004060698B3 (en) * | 2004-12-16 | 2006-06-14 | Infineon Technologies Ag | Polar modulator for use in communication system, has filter provided downstream of output of pulse width modulator, for suppressing harmonic portions of fundamental value of signal measurable at output |
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 |
US8411788B2 (en) * | 2005-11-18 | 2013-04-02 | Qualcomm, Incorporated | Digital transmitters for wireless communication |
GB2432982A (en) * | 2005-11-30 | 2007-06-06 | Toshiba Res Europ Ltd | An EER RF amplifier with PWM signal switching |
WO2007110831A2 (en) * | 2006-03-27 | 2007-10-04 | Nxp B.V. | Radio frequency pwm & ppm modulator |
KR100710509B1 (en) * | 2006-04-11 | 2007-04-25 | 남상욱 | High-efficiency linear power amplifier system using pulse area modulation |
CN101473529B (en) * | 2006-06-27 | 2013-06-19 | 艾利森电话股份有限公司 | Switch mode power magnification |
DE602007008267D1 (en) * | 2006-09-12 | 2010-09-16 | Nxp Bv | AMPLIFIER ARCHITECTURE FOR POLAR MODULATIONS |
JP2008124540A (en) * | 2006-11-08 | 2008-05-29 | Advanced Telecommunication Research Institute International | Communication device |
CN104202279A (en) | 2006-12-26 | 2014-12-10 | 大力系统有限公司 | Method and system for baseband predistortion linearization in multi-channel wideband communication systems |
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 |
KR101503548B1 (en) * | 2007-04-23 | 2015-03-24 | 달리 시스템즈 씨오. 엘티디. | digital hybrid mode power amplifier system |
US8451886B2 (en) * | 2007-08-16 | 2013-05-28 | St-Ericsson Sa | Apparatus method and computer readable medium for a transmitter |
WO2009047704A1 (en) * | 2007-10-09 | 2009-04-16 | St Wireless Sa | Transmitter |
CN101884167A (en) * | 2007-12-07 | 2010-11-10 | Nxp股份有限公司 | Transmitter comprising a pulse width pulse position modulator and method thereof |
CN102150361B (en) | 2007-12-07 | 2016-11-09 | 大力系统有限公司 | The RF digital pre-distortion that base band derives |
US8243868B2 (en) * | 2007-12-31 | 2012-08-14 | Agere Systems Inc. | Method and apparatus for duty cycle pre-distortion and two-dimensional modulation |
EP2178203A1 (en) * | 2008-10-14 | 2010-04-21 | Alcatel, Lucent | Active antenna element for mobile radio communications |
JP5505311B2 (en) * | 2008-12-25 | 2014-05-28 | 日本電気株式会社 | Power amplifier |
WO2010076672A1 (en) * | 2009-01-05 | 2010-07-08 | Freescale Semiconductor, Inc. | Amplifier circuitry, integrated circuit and communication unit |
US8682338B2 (en) | 2010-09-14 | 2014-03-25 | Dali Systems Co., Ltd. | Remotely reconfigurable distributed antenna system and methods |
US8878622B2 (en) | 2011-04-07 | 2014-11-04 | Infineon Technologies Ag | System and method for generating a pulse-width modulated signal |
DE102011082351A1 (en) * | 2011-09-08 | 2013-03-14 | Rohde & Schwarz Gmbh & Co. Kg | Method and device for regulating the level of a pulsed high-frequency signal |
US8971398B2 (en) | 2011-09-19 | 2015-03-03 | Infineon Technologies Ag | System and method for generating a radio frequency pulse-width modulated signal |
US9054940B2 (en) * | 2013-10-25 | 2015-06-09 | Mitsubishi Electric Research Laboratories, Inc. | System and method for linearizing power amplifiers |
JP6335628B2 (en) * | 2014-05-14 | 2018-05-30 | 三菱電機株式会社 | Low distortion transmitter |
US9270504B2 (en) * | 2014-07-28 | 2016-02-23 | Mitsubishi Electric Research Laboratories, Inc. | System and method for linearizing power amplifiers |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4972440A (en) * | 1988-09-23 | 1990-11-20 | Hughes Aircraft Company | Transmitter circuit for efficiently transmitting communication traffic via phase modulated carrier signals |
US5105164A (en) | 1989-02-28 | 1992-04-14 | At&T Bell Laboratories | High efficiency uhf linear power amplifier |
ES2073647T3 (en) | 1990-12-03 | 1995-08-16 | Siemens Ag | MODULATION INSTALLATION FOR AN HF POWER AMPLIFIER. |
US5450044A (en) * | 1993-04-14 | 1995-09-12 | Acrodyne Industries, Inc. | Quadrature amplitude modulator including a digital amplitude modulator as a component thereof |
US5420536A (en) | 1993-03-16 | 1995-05-30 | Victoria University Of Technology | Linearized power amplifier |
US5430416A (en) * | 1994-02-23 | 1995-07-04 | Motorola | Power amplifier having nested amplitude modulation controller and phase modulation controller |
US5880633A (en) * | 1997-05-08 | 1999-03-09 | Motorola, Inc. | High efficiency power amplifier |
US5861777A (en) * | 1997-07-02 | 1999-01-19 | Motorola, Inc. | Method and apparatus for compensation of phase distortion in power amplifiers |
US5886572A (en) * | 1997-07-25 | 1999-03-23 | Motorola, Inc. | Method and apparatus for reducing distortion in a power amplifier |
US6445247B1 (en) * | 2001-06-01 | 2002-09-03 | Qualcomm Incorporated | Self-controlled high efficiency power amplifier |
-
2000
- 2000-02-25 GB GB0004569A patent/GB2359681B/en not_active Expired - Fee Related
-
2001
- 2001-02-19 WO PCT/GB2001/000691 patent/WO2001063745A2/en active Application Filing
- 2001-02-19 US US10/204,996 patent/US6794931B2/en not_active Expired - Fee Related
- 2001-02-19 AU AU2001233893A patent/AU2001233893A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US6794931B2 (en) | 2004-09-21 |
WO2001063745A2 (en) | 2001-08-30 |
GB2359681A (en) | 2001-08-29 |
WO2001063745A3 (en) | 2002-10-24 |
GB2359681B (en) | 2004-03-10 |
US20030112063A1 (en) | 2003-06-19 |
GB0004569D0 (en) | 2000-04-19 |
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