GB201017116D0 - Envelope modulator and method of modulating a signal envelope - Google Patents

Envelope modulator and method of modulating a signal envelope

Info

Publication number
GB201017116D0
GB201017116D0 GBGB1017116.3A GB201017116A GB201017116D0 GB 201017116 D0 GB201017116 D0 GB 201017116D0 GB 201017116 A GB201017116 A GB 201017116A GB 201017116 D0 GB201017116 D0 GB 201017116D0
Authority
GB
United Kingdom
Prior art keywords
envelope
modulating
modulator
signal
signal envelope
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.)
Withdrawn
Application number
GBGB1017116.3A
Other versions
GB2484475A (en
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.)
Toshiba Europe Ltd
Original Assignee
Toshiba Research Europe Ltd
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 Toshiba Research Europe Ltd filed Critical Toshiba Research Europe Ltd
Priority to GB1017116.3A priority Critical patent/GB2484475A/en
Publication of GB201017116D0 publication Critical patent/GB201017116D0/en
Publication of GB2484475A publication Critical patent/GB2484475A/en
Withdrawn legal-status Critical Current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
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • 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
    • H03F1/0211—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
    • H03F1/0244—Stepped control
    • H03F1/025—Stepped control by using a signal derived from the input signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/102—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
    • H03F2200/432—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)
GB1017116.3A 2010-10-11 2010-10-11 A power supply modulator for an RF amplifier, using a current-output class G amplifier Withdrawn GB2484475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1017116.3A GB2484475A (en) 2010-10-11 2010-10-11 A power supply modulator for an RF amplifier, using a current-output class G amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1017116.3A GB2484475A (en) 2010-10-11 2010-10-11 A power supply modulator for an RF amplifier, using a current-output class G amplifier

Publications (2)

Publication Number Publication Date
GB201017116D0 true GB201017116D0 (en) 2010-11-24
GB2484475A GB2484475A (en) 2012-04-18

Family

ID=43304374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1017116.3A Withdrawn GB2484475A (en) 2010-10-11 2010-10-11 A power supply modulator for an RF amplifier, using a current-output class G amplifier

Country Status (1)

Country Link
GB (1) GB2484475A (en)

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US9112452B1 (en) 2009-07-14 2015-08-18 Rf Micro Devices, Inc. High-efficiency power supply for a modulated load
US9099961B2 (en) 2010-04-19 2015-08-04 Rf Micro Devices, Inc. Output impedance compensation of a pseudo-envelope follower power management system
US8981848B2 (en) 2010-04-19 2015-03-17 Rf Micro Devices, Inc. Programmable delay circuitry
EP2561611B1 (en) 2010-04-19 2015-01-14 RF Micro Devices, Inc. Pseudo-envelope following power management system
US9431974B2 (en) 2010-04-19 2016-08-30 Qorvo Us, Inc. Pseudo-envelope following feedback delay compensation
WO2012047738A1 (en) 2010-09-29 2012-04-12 Rf Micro Devices, Inc. SINGLE μC-BUCKBOOST CONVERTER WITH MULTIPLE REGULATED SUPPLY OUTPUTS
US8782107B2 (en) 2010-11-16 2014-07-15 Rf Micro Devices, Inc. Digital fast CORDIC for envelope tracking generation
CN103444076B (en) 2011-02-07 2016-05-04 射频小型装置公司 For the group delay calibration steps of power amplifier envelope-tracking
US9246460B2 (en) 2011-05-05 2016-01-26 Rf Micro Devices, Inc. Power management architecture for modulated and constant supply operation
US9247496B2 (en) 2011-05-05 2016-01-26 Rf Micro Devices, Inc. Power loop control based envelope tracking
US9379667B2 (en) 2011-05-05 2016-06-28 Rf Micro Devices, Inc. Multiple power supply input parallel amplifier based envelope tracking
EP2715945B1 (en) 2011-05-31 2017-02-01 Qorvo US, Inc. Rugged iq receiver based rf gain measurements
US9019011B2 (en) 2011-06-01 2015-04-28 Rf Micro Devices, Inc. Method of power amplifier calibration for an envelope tracking system
US8760228B2 (en) 2011-06-24 2014-06-24 Rf Micro Devices, Inc. Differential power management and power amplifier architecture
US8952710B2 (en) 2011-07-15 2015-02-10 Rf Micro Devices, Inc. Pulsed behavior modeling with steady state average conditions
WO2013012787A2 (en) 2011-07-15 2013-01-24 Rf Micro Devices, Inc. Modified switching ripple for envelope tracking system
US9263996B2 (en) 2011-07-20 2016-02-16 Rf Micro Devices, Inc. Quasi iso-gain supply voltage function for envelope tracking systems
US8942652B2 (en) 2011-09-02 2015-01-27 Rf Micro Devices, Inc. Split VCC and common VCC power management architecture for envelope tracking
US8957728B2 (en) 2011-10-06 2015-02-17 Rf Micro Devices, Inc. Combined filter and transconductance amplifier
US9024688B2 (en) 2011-10-26 2015-05-05 Rf Micro Devices, Inc. Dual parallel amplifier based DC-DC converter
CN103959189B (en) 2011-10-26 2015-12-23 射频小型装置公司 Based on the parallel amplifier phase compensation of inductance
WO2013063364A1 (en) 2011-10-26 2013-05-02 Rf Micro Devices, Inc. Average frequency control of switcher for envelope tracking
US9484797B2 (en) 2011-10-26 2016-11-01 Qorvo Us, Inc. RF switching converter with ripple correction
US9250643B2 (en) 2011-11-30 2016-02-02 Rf Micro Devices, Inc. Using a switching signal delay to reduce noise from a switching power supply
US8975959B2 (en) 2011-11-30 2015-03-10 Rf Micro Devices, Inc. Monotonic conversion of RF power amplifier calibration data
US9515621B2 (en) 2011-11-30 2016-12-06 Qorvo Us, Inc. Multimode RF amplifier system
US8947161B2 (en) 2011-12-01 2015-02-03 Rf Micro Devices, Inc. Linear amplifier power supply modulation for envelope tracking
US9280163B2 (en) 2011-12-01 2016-03-08 Rf Micro Devices, Inc. Average power tracking controller
US9256234B2 (en) 2011-12-01 2016-02-09 Rf Micro Devices, Inc. Voltage offset loop for a switching controller
US9041365B2 (en) 2011-12-01 2015-05-26 Rf Micro Devices, Inc. Multiple mode RF power converter
WO2013082384A1 (en) 2011-12-01 2013-06-06 Rf Micro Devices, Inc. Rf power converter
US9494962B2 (en) 2011-12-02 2016-11-15 Rf Micro Devices, Inc. Phase reconfigurable switching power supply
US9813036B2 (en) 2011-12-16 2017-11-07 Qorvo Us, Inc. Dynamic loadline power amplifier with baseband linearization
US9298198B2 (en) 2011-12-28 2016-03-29 Rf Micro Devices, Inc. Noise reduction for envelope tracking
US8981839B2 (en) 2012-06-11 2015-03-17 Rf Micro Devices, Inc. Power source multiplexer
US9020451B2 (en) 2012-07-26 2015-04-28 Rf Micro Devices, Inc. Programmable RF notch filter for envelope tracking
US9225231B2 (en) 2012-09-14 2015-12-29 Rf Micro Devices, Inc. Open loop ripple cancellation circuit in a DC-DC converter
US9197256B2 (en) 2012-10-08 2015-11-24 Rf Micro Devices, Inc. Reducing effects of RF mixer-based artifact using pre-distortion of an envelope power supply signal
WO2014062902A1 (en) 2012-10-18 2014-04-24 Rf Micro Devices, Inc Transitioning from envelope tracking to average power tracking
US9627975B2 (en) 2012-11-16 2017-04-18 Qorvo Us, Inc. Modulated power supply system and method with automatic transition between buck and boost modes
US9035699B2 (en) * 2012-12-19 2015-05-19 Qualcomm Incorporated Multi-stage amplifier
US9929696B2 (en) 2013-01-24 2018-03-27 Qorvo Us, Inc. Communications based adjustments of an offset capacitive voltage
GB2510397A (en) * 2013-02-01 2014-08-06 Nujira Ltd Envelope tracking power supply with feedback
GB2510396A (en) * 2013-02-01 2014-08-06 Nujira Ltd Controlling resonance in an envelope tracking power supply
GB2511733B (en) 2013-02-01 2020-08-19 Snaptrack Inc 2G support for 2G and 3G/4G envelope tracking modulator
US9178472B2 (en) 2013-02-08 2015-11-03 Rf Micro Devices, Inc. Bi-directional power supply signal based linear amplifier
US9203353B2 (en) 2013-03-14 2015-12-01 Rf Micro Devices, Inc. Noise conversion gain limited RF power amplifier
WO2014152903A2 (en) 2013-03-14 2014-09-25 Rf Micro Devices, Inc Envelope tracking power supply voltage dynamic range reduction
CN103518322B (en) * 2013-03-26 2017-05-31 华为技术有限公司 Digital envelope amplifying circuit, method and envelope tracking power amplifier
US9479118B2 (en) 2013-04-16 2016-10-25 Rf Micro Devices, Inc. Dual instantaneous envelope tracking
US9319495B2 (en) 2013-08-06 2016-04-19 Aura Semiconductor Pvt. Ltd Power amplifier providing high efficiency
US9374005B2 (en) 2013-08-13 2016-06-21 Rf Micro Devices, Inc. Expanded range DC-DC converter
GB2532681B (en) * 2013-09-13 2021-05-19 Toshiba Res Europe Limited Envelope modulator
US9614476B2 (en) 2014-07-01 2017-04-04 Qorvo Us, Inc. Group delay calibration of RF envelope tracking
WO2016030651A1 (en) 2014-08-29 2016-03-03 Toshiba Research Europe Limited Timing alignment sensitivity for envelope tracking
US9941844B2 (en) 2015-07-01 2018-04-10 Qorvo Us, Inc. Dual-mode envelope tracking power converter circuitry
US9912297B2 (en) 2015-07-01 2018-03-06 Qorvo Us, Inc. Envelope tracking power converter circuitry
US9973147B2 (en) 2016-05-10 2018-05-15 Qorvo Us, Inc. Envelope tracking power management circuit
US10476437B2 (en) 2018-03-15 2019-11-12 Qorvo Us, Inc. Multimode voltage tracker circuit

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US4337441A (en) * 1980-02-11 1982-06-29 Tektronix, Inc. Supply-voltage driver for a differential amplifier
GB2398648B (en) * 2003-02-19 2005-11-09 Nujira Ltd Power supply stage for an amplifier
US6838942B1 (en) * 2003-07-17 2005-01-04 Standard Microsystems Corporation Efficient class-G amplifier with wide output voltage swing
KR100767763B1 (en) * 2003-09-16 2007-10-17 노키아 코포레이션 A Radio frequency transmitter with hybrid switched mode/linear power amplifier power supply for use in polar transmitter
US6982600B2 (en) * 2004-03-02 2006-01-03 Elantec Semiconductor, Inc. Class G-amplifiers
GB0418991D0 (en) * 2004-08-25 2004-09-29 Nujira Ltd High efficiency variable voltage supply
US7733178B1 (en) * 2007-10-24 2010-06-08 Fairchild Semiconductor Corporation High efficiency audio amplifier
GB2459894A (en) * 2008-05-09 2009-11-11 Nujira Ltd Switched supply stage with feedback
US7808323B2 (en) * 2008-05-23 2010-10-05 Panasonic Corporation High-efficiency envelope tracking systems and methods for radio frequency power amplifiers
GB2465146B (en) * 2008-11-04 2014-05-28 Nujira Ltd Improved power supply stage

Also Published As

Publication number Publication date
GB2484475A (en) 2012-04-18

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)