WO2021042088A3 - Switched envelope tracking - Google Patents
Switched envelope tracking Download PDFInfo
- 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
Links
- 238000000034 method Methods 0.000 abstract 6
- 230000005540 biological transmission Effects 0.000 abstract 1
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.
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)
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)
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 |
-
2020
- 2020-11-20 WO PCT/US2020/061406 patent/WO2021042088A2/en active Application Filing
- 2020-11-20 CN CN202080107096.5A patent/CN116406457A/en active Pending
Patent Citations (5)
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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