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1. WO2017127977 - CIRCUITRY AND METHOD FOR CONTROLLING A POWER AMPLIFIER IN A TRANSMIT/RECEIVE SWITCHING SYSTEM

Publication Number WO/2017/127977
Publication Date 03.08.2017
International Application No. PCT/CN2016/071971
International Filing Date 25.01.2016
IPC
H04B 1/04 2006.1
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
H04B 1/16 2006.1
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
06Receivers
16Circuits
CPC
H03F 1/0211
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
H03F 2200/451
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
451the amplifier being a radio frequency amplifier
H03F 3/19
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
19with semiconductor devices only
H03F 3/245
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
24of transmitter output stages
245with semiconductor devices only
H03F 3/72
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
72Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
H04B 1/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
02Transmitters
04Circuits
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
  • YUE, Xiaolong [CN]/[CN] (SC)
Inventors
  • YUE, Xiaolong
  • ZHANG, Lei
  • WU, Zhanyu
  • PENG, Jiangyan
Agents
  • CHINA PATENT AGENT (H.K.) LTD.
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) CIRCUITRY AND METHOD FOR CONTROLLING A POWER AMPLIFIER IN A TRANSMIT/RECEIVE SWITCHING SYSTEM
(FR) ENSEMBLE DE CIRCUITS ET PROCÉDÉ DE COMMANDE D'UN AMPLIFICATEUR DE PUISSANCE DANS UN SYSTÈME DE COMMUTATION ÉMISSION/RÉCEPTION
Abstract
(EN) According to embodiments of the present disclosure, circuitry (400, 600) and method (800) are provided for controlling a power amplifier (10) in a transmit/receive switching system. The circuitry (400, 600) comprises a load circuit (420, 620) for at least partly reducing a magnitude of a swing of a power supply voltage caused by a variation in load of the transmit/receive switching system that occurs upon initiation of a transmission by the transmit/receive switching system. The circuitry (400, 600) further comprises a first switch (410, 610), coupled in series with the load circuit (420, 620), operable to switch on to couple the power supply voltage to a ground voltage via the load circuit (420, 620). The circuitry (400, 600) further comprises a control circuit (430, 630) configured to switch on the first switch (410, 610) at a first timing, and to switch off the first switch (410, 610) and turn on the power amplifier (10) at a second timing. The first timing is a time interval ahead of the second timing.
(FR) Des modes de réalisation de la présente invention concernent un ensemble de circuits (400, 600) et un procédé (800) de commande d'un amplificateur de puissance (10) dans un système de commutation émission/réception. L'ensemble de circuits (400, 600) comprend un circuit de charge (420, 620) pour réduire au moins partiellement l'importance d'une excursion de tension d'alimentation occasionnée par une variation de charge du système de commutation émission/réception qui se produit lors de l'initiation d'une transmission par le système de commutation émission/réception. L'ensemble de circuits (400, 600) comprend en outre un premier commutateur (410, 610) qui est couplé en série au circuit de charge (420, 620) et sert à exécuter une commutation pour coupler la tension d'alimentation à une tension de masse via le circuit de charge (420, 620). L'ensemble de circuits (400, 600) comprend en outre un circuit de commande (430, 630) qui est configuré pour activer le premier commutateur (410, 610) à un premier instant, et pour désactiver le premier commutateur (410, 610) et activer l'amplificateur (10) à un second instant. Le premier instant est un intervalle de temps précédant le second instant
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