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1. WO2018144177 - RADIO FREQUENCY FRONT END TRANSMIT AND RECEIVE PATH SWITCH GAIN

Publication Number WO/2018/144177
Publication Date 09.08.2018
International Application No. PCT/US2018/012415
International Filing Date 04.01.2018
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 1/18 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
18Input circuits, e.g. for coupling to an antenna or a transmission line
CPC
H03F 1/0244
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
0244Stepped control
H03F 1/0261
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
0261with control of the polarisation voltage or current, e.g. gliding Class A
H03F 1/0277
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
0277Selecting one or more amplifiers from a plurality of amplifiers
H03F 2200/318
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
318A matching circuit being used as coupling element between two amplifying stages
H03F 2200/451
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
451the amplifier being a radio frequency amplifier
H03F 2203/7231
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2203Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
72Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
7231the gated amplifier being switched on or off by putting into cascade or not, by choosing between amplifiers by one or more switch(es)
Applicants
  • QUALCOMM INCORPORATED [US]/[US]
Inventors
  • BEAUDIN, Steve Andre
  • MEIR, Moshe
  • NARAYANASWAMI, Ramakrishna Sekhar
  • HOCHDORF, Eyal
Agents
  • LENKIN, Alan M.
  • LUTZ, Joseph
  • PARTOW-NAVID, Puya
  • FASHU-KANU, Alvin V.
Priority Data
15/630,52922.06.2017US
62/454,66603.02.2017US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) RADIO FREQUENCY FRONT END TRANSMIT AND RECEIVE PATH SWITCH GAIN
(FR) GAIN DE COMMUTATEUR DE TRAJETS D'ÉMISSION ET DE RÉCEPTION DE DISPOSITIF FRONTAL À RADIOFRÉQUENCES
Abstract
(EN) A radio frequency front end of a user equipment for reducing power consumption includes a receive chain having a first low noise amplifier stage, a transmit chain including a first power amplifier stage, a transmit bypass path, a receive bypass path and a time division duplex switch. The transmit bypass path is selectively coupled to a transmit signal path at a first intermediate point of the transmit chain, prior to the first power amplifier stage. The receive bypass path is selectively coupled to a receive signal path at a first intermediate point of the receive chain after the first low noise amplifier stage. The time division duplex switch is selectively coupled to an antenna, the transmit bypass path, the receive bypass path, the first power amplifier stage and the first low noise amplifier stage.
(FR) Un dispositif frontal à radiofréquences d'un équipement d'utilisateur destiné à réduire la consommation d'énergie comprend une chaîne de réception dotée d'un premier étage amplificateur à faible bruit, une chaîne d'émission comprenant un premier étage amplificateur de puissance, un trajet de dérivation d'émission, un trajet de dérivation de réception et un commutateur duplex à répartition en temps. Le trajet de dérivation d'émission est couplé sélectivement à un trajet de signal d'émission au niveau d'un premier point intermédiaire de la chaîne d'émission, avant le premier étage amplificateur de puissance. Le trajet de dérivation de réception est couplé sélectivement à un trajet de signal de réception au niveau d'un premier point intermédiaire de la chaîne de réception après le premier étage amplificateur à faible bruit. Le commutateur duplex à répartition en temps est couplé sélectivement à une antenne, au trajet de dérivation d'émission, au trajet de dérivation de réception, au premier étage amplificateur de puissance et au premier étage amplificateur à faible bruit.
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