WO2021042088A3 - Switched envelope tracking - Google Patents

Switched envelope tracking Download PDF

Info

Publication number
WO2021042088A3
WO2021042088A3 PCT/US2020/061406 US2020061406W WO2021042088A3 WO 2021042088 A3 WO2021042088 A3 WO 2021042088A3 US 2020061406 W US2020061406 W US 2020061406W WO 2021042088 A3 WO2021042088 A3 WO 2021042088A3
Authority
WO
WIPO (PCT)
Prior art keywords
input signal
envelope tracking
symbol
switched
processing
Prior art date
Application number
PCT/US2020/061406
Other languages
French (fr)
Other versions
WO2021042088A2 (en
Inventor
Jifeng Geng
Original Assignee
Zeku, 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 Zeku, Inc. filed Critical Zeku, Inc.
Priority to PCT/US2020/061406 priority Critical patent/WO2021042088A2/en
Priority to CN202080107096.5A priority patent/CN116406457A/en
Publication of WO2021042088A2 publication Critical patent/WO2021042088A2/en
Publication of WO2021042088A3 publication Critical patent/WO2021042088A3/en

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
    • 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
    • H03F1/32—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
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • 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
    • 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
    • H03F2200/408—Indexing scheme relating to amplifiers the output amplifying stage of an amplifier comprising three power stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)

Abstract

Embodiments of circuit, apparatus, and method for switched envelope tracking are disclosed. In an example, a method for switched envelope tracking can include receiving an input signal representative of an intended transmission. The input signal can include a symbol. The method can also include receiving information regarding the symbol separately from the receiving the input signal. The method can further include selecting a processing path from at least two processing paths based on the information regarding the symbol. The method can additionally include processing the input signal based on the selected processing path to provide a control signal. The method can also include supplying the control signal to a power amplifier in parallel to a modified form of the input signal.
PCT/US2020/061406 2020-11-20 2020-11-20 Switched envelope tracking WO2021042088A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US2020/061406 WO2021042088A2 (en) 2020-11-20 2020-11-20 Switched envelope tracking
CN202080107096.5A CN116406457A (en) 2020-11-20 2020-11-20 Switching envelope tracking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2020/061406 WO2021042088A2 (en) 2020-11-20 2020-11-20 Switched envelope tracking

Publications (2)

Publication Number Publication Date
WO2021042088A2 WO2021042088A2 (en) 2021-03-04
WO2021042088A3 true WO2021042088A3 (en) 2021-04-01

Family

ID=74684751

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2020/061406 WO2021042088A2 (en) 2020-11-20 2020-11-20 Switched envelope tracking

Country Status (2)

Country Link
CN (1) CN116406457A (en)
WO (1) WO2021042088A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023249771A1 (en) * 2022-06-22 2023-12-28 Qorvo Us, Inc. Supply voltage based analog predistortion (apd) circuit for power amplifier

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070018718A1 (en) * 2005-06-20 2007-01-25 National Sun Yat-Sen University Microwave transmitter and the method for increasing envelope bandwidth
US20090111397A1 (en) * 2007-10-26 2009-04-30 Marnie Dunsmore Polar modulation transmitter with envelope modulator path switching
US20120146734A1 (en) * 2010-12-13 2012-06-14 Skyworks Solutions, Inc. Apparatus and methods for biasing a power amplifier
US20140028392A1 (en) * 2012-01-16 2014-01-30 Nujira Limited Pre-distortion in rf path in combination with shaping table in envelope path for envelope tracking amplifier
US9602058B1 (en) * 2014-08-26 2017-03-21 Marvell International Ltd. Method and apparatus for envelope tracking calibration

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070018718A1 (en) * 2005-06-20 2007-01-25 National Sun Yat-Sen University Microwave transmitter and the method for increasing envelope bandwidth
US20090111397A1 (en) * 2007-10-26 2009-04-30 Marnie Dunsmore Polar modulation transmitter with envelope modulator path switching
US20120146734A1 (en) * 2010-12-13 2012-06-14 Skyworks Solutions, Inc. Apparatus and methods for biasing a power amplifier
US20140028392A1 (en) * 2012-01-16 2014-01-30 Nujira Limited Pre-distortion in rf path in combination with shaping table in envelope path for envelope tracking amplifier
US9602058B1 (en) * 2014-08-26 2017-03-21 Marvell International Ltd. Method and apparatus for envelope tracking calibration

Also Published As

Publication number Publication date
WO2021042088A2 (en) 2021-03-04
CN116406457A (en) 2023-07-07

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