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1. WO2021042088 - SWITCHED ENVELOPE TRACKING

Publication Number WO/2021/042088
Publication Date 04.03.2021
International Application No. PCT/US2020/061406
International Filing Date 20.11.2020
IPC
H03F 1/02 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
G05F 1/10 2006.01
GPHYSICS
05CONTROLLING; REGULATING
FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
1Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
10Regulating voltage or current
H04B 1/04 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
02Transmitters
04Circuits
CPC
H03F 1/0227
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
0205in transistor amplifiers
0211with control of the supply voltage or current
0216Continuous control
0222by using a signal derived from the input signal
0227using supply converters
H03F 1/3241
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
32Modifications of amplifiers to reduce non-linear distortion
3241using predistortion circuits
H03F 2200/102
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
102A non-specified detector of a signal envelope being used in an amplifying circuit
H03F 2200/408
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
408the output amplifying stage of an amplifier comprising three power stages
H03F 2200/451
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
451the amplifier being a radio frequency amplifier
H03F 3/189
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
189High frequency amplifiers, e.g. radio frequency amplifiers
Applicants
  • ZEKU, INC. [US]/[US]
Inventors
  • GENG, Jifeng
Agents
  • ZOU, Zhiwei
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SWITCHED ENVELOPE TRACKING
(FR) SUIVI D'ENVELOPPE COMMUTÉE
Abstract
(EN)
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.
(FR)
Des modes de réalisation de circuit, d'appareil et de procédé de suivi d'enveloppe sont divulgués. Dans un exemple, un procédé de suivi d'enveloppe commutée peut comprendre la réception d'un signal d'entrée représentatif d'une transmission prévue. Le signal d'entrée peut comprendre un symbole. Le procédé peut également comprendre la réception d'informations concernant le symbole séparément de la réception du signal d'entrée. Le procédé peut en outre comprendre la sélection d'un trajet de traitement parmi au moins deux trajets de traitement sur la base des informations concernant le symbole. Le procédé peut en outre comprendre le traitement du signal d'entrée sur la base du trajet de traitement sélectionné pour fournir un signal de commande. Le procédé peut également consister à fournir le signal de commande à un amplificateur de puissance en parallèle à une forme modifiée du signal d'entrée.
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