WO2002050995A3 - Efficient, precise rf modulation using multiple amplifier stages - Google Patents

Efficient, precise rf modulation using multiple amplifier stages Download PDF

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Publication number
WO2002050995A3
WO2002050995A3 PCT/US2001/050605 US0150605W WO0250995A3 WO 2002050995 A3 WO2002050995 A3 WO 2002050995A3 US 0150605 W US0150605 W US 0150605W WO 0250995 A3 WO0250995 A3 WO 0250995A3
Authority
WO
WIPO (PCT)
Prior art keywords
power
amplifier
output
outputs
low
Prior art date
Application number
PCT/US2001/050605
Other languages
French (fr)
Other versions
WO2002050995A2 (en
Inventor
Wendell B Sander
Original Assignee
Tropian Inc
Wendell B Sander
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 Tropian Inc, Wendell B Sander filed Critical Tropian Inc
Priority to AU2002231309A priority Critical patent/AU2002231309A1/en
Publication of WO2002050995A2 publication Critical patent/WO2002050995A2/en
Publication of WO2002050995A3 publication Critical patent/WO2002050995A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating 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
    • H03F1/0211—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
    • 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
    • H03F1/0294—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using vector summing of two or more constant amplitude phase-modulated signals

Abstract

The present invention, generally speaking, provides a highly efficient RF power amplifier having a large output dynamic range. The amplifier avoid the large power dissipation that occurs in the LINC combiner at lower output levels. In general, this is achieved by using power-controlled switch-mode power amplifiers to vary output power at large power outputs, and reverting to LINC only at low output powers. Thus the present invention achieves the desirable combination of high efficiency at all output powers, while maintaining the fine output power control of the LINC method. More particularly, the power amplifier is based on a highly efficient structure in which amplitude modulation/power control of the out-put of an RF amplifier is achieved by operating the amplifier in switch mode an varying the power supply of the amplifier, as described more fully in U.S. Patent application 09/637,269 entitled High-Efficiency Modulating RF Amplifier, filed August 10, 2000 and incorporated herein by reference. Such an amplifier behaves quite linearly at high power but may exhibit non-linearity at lower output powers. Good linearity throughout a wide dynamic range, and particularly at low output power, may be achieved by phasing and combining the outputs of two (or more) such amplifiers. At high and medium power, the outputs are combined in-phase, allowing for low-loss, high-efficiency operation. At low power, the outputs are phased such that power subtraction occurs. In this manner, each amplifier may be operated at a power level that exhibits good linearity while producing an output signal of a lower level that would normally fall within a region of substantial non-linearity.
PCT/US2001/050605 2000-12-21 2001-12-21 Efficient, precise rf modulation using multiple amplifier stages WO2002050995A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002231309A AU2002231309A1 (en) 2000-12-21 2001-12-21 Efficient, precise rf modulation using multiple amplifier stages

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/746,530 US6690233B2 (en) 2000-12-21 2000-12-21 Efficient, precise RF modulation using multiple amplifier stages
US09/746,530 2000-12-21

Publications (2)

Publication Number Publication Date
WO2002050995A2 WO2002050995A2 (en) 2002-06-27
WO2002050995A3 true WO2002050995A3 (en) 2002-10-10

Family

ID=25001236

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/050605 WO2002050995A2 (en) 2000-12-21 2001-12-21 Efficient, precise rf modulation using multiple amplifier stages

Country Status (3)

Country Link
US (1) US6690233B2 (en)
AU (1) AU2002231309A1 (en)
WO (1) WO2002050995A2 (en)

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US7751496B2 (en) * 2003-06-25 2010-07-06 Pine Valley Investments, Inc. Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
US7151913B2 (en) * 2003-06-30 2006-12-19 M/A-Com, Inc. Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
US7054597B2 (en) 2003-06-25 2006-05-30 Nokia Corporation Power control for a transmitter
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US7492059B2 (en) * 2003-10-16 2009-02-17 Microsemi Corp.—Analog Mixed Signal Group Ltd. High power architecture for power over ethernet
US7460889B2 (en) * 2003-10-16 2008-12-02 Microsemi Corp.—Analog Mixed Signal Group Ltd. High power classification for power over Ethernet
US7009447B2 (en) * 2003-11-25 2006-03-07 Intel Corporation Outphasing modulator
US20050136858A1 (en) * 2003-12-23 2005-06-23 Eliav Zipper Bipolar modulator
US7509114B2 (en) 2004-01-22 2009-03-24 Microsemi Corp. - Analog Mixed Signal Group Ltd. Redundant powered device circuit
US7369822B2 (en) * 2004-05-18 2008-05-06 Sige Semiconductor Inc. Segmented switching power amplifier
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
CA2609333A1 (en) * 2005-05-27 2007-03-15 Ahmed Birafane High effeciency rf transmitter system using non-linear amplifiers
US7911272B2 (en) 2007-06-19 2011-03-22 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
US9106316B2 (en) 2005-10-24 2015-08-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification
US8013675B2 (en) 2007-06-19 2011-09-06 Parkervision, Inc. Combiner-less multiple input single output (MISO) amplification with blended control
JP2007166190A (en) * 2005-12-13 2007-06-28 Matsushita Electric Ind Co Ltd Class d amplifier
DE102006006875B3 (en) * 2006-02-15 2007-05-03 Rembold, Bernhard, Prof. Dr. Ing. Linear amplification arrangement for load-path HF signals, has voltage for non-linear amplifiers supplied from third amplifier for load-pass filter component of HF signal envelope
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
US7459973B2 (en) * 2006-06-12 2008-12-02 École De Technologie Supérieure Method and apparatus for amplifying a signal modulated in amplitude
US8018276B2 (en) * 2006-09-28 2011-09-13 Motorola Mobility, Inc. Signal processing method and power amplifier device
US7881401B2 (en) * 2006-11-17 2011-02-01 Infineon Technologies Ag Transmitter arrangement and signal processing method
US7620129B2 (en) * 2007-01-16 2009-11-17 Parkervision, Inc. RF power transmission, modulation, and amplification, including embodiments for generating vector modulation control signals
WO2008144017A1 (en) 2007-05-18 2008-11-27 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
US7541867B2 (en) * 2007-05-31 2009-06-02 Intel Corporation Polar amplifier
WO2009005768A1 (en) 2007-06-28 2009-01-08 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
WO2009123568A1 (en) * 2008-03-31 2009-10-08 Agency For Science, Technology & Research High efficiency linear transmitter
US8681894B2 (en) * 2009-11-03 2014-03-25 Telefonaktiebolaget L M (Publ) Digital affine transformation modulated power amplifier for wireless communications
US8416884B2 (en) * 2010-08-18 2013-04-09 Panasonic Corporation Digital RF transmitter optimized for linear quantized IQ up conversion
KR20140026458A (en) 2011-04-08 2014-03-05 파커비전, 인크. Systems and methods of rf power transmission, modulation, and amplification
EP2715867A4 (en) 2011-06-02 2014-12-17 Parkervision Inc Antenna control
CN103814521B (en) * 2011-09-15 2016-09-28 株式会社村田制作所 Power amplifier and method of operating thereof
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WO2000048307A1 (en) * 1999-02-09 2000-08-17 Tropian, Inc. High-efficiency modulating rf amplifier

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WO2000048307A1 (en) * 1999-02-09 2000-08-17 Tropian, Inc. High-efficiency modulating rf amplifier

Non-Patent Citations (1)

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Title
LIU W ET AL: "CONSIDERATIONS ON APPLYING OFDM IN A HIGHLY EFFICIENT POWER AMPLIFIER", IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II: ANALOG AND DIGITAL SIGNAL PROCESSING, IEEE INC. NEW YORK, US, vol. 46, no. 11, November 1999 (1999-11-01), pages 1329 - 1336, XP000928785, ISSN: 1057-7130 *

Also Published As

Publication number Publication date
AU2002231309A1 (en) 2002-07-01
US6690233B2 (en) 2004-02-10
US20020079962A1 (en) 2002-06-27
WO2002050995A2 (en) 2002-06-27

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