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1. WO2010025556 - A PASSIVE TRANSMITTER ARCHITECTURE WITH SWITCHABLE OUTPUTS FOR WIRELESS APPLICATIONS

Publication Number WO/2010/025556
Publication Date 11.03.2010
International Application No. PCT/CA2009/001221
International Filing Date 08.09.2009
IPC
H04W 88/06 2009.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
88Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
02Terminal devices
06adapted for operation in multiple networks, e.g. multi-mode terminals
H03F 3/45 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
45Differential amplifiers
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
CPC
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 2200/372
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
372Noise reduction and elimination in amplifier
H03F 2200/451
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
451the amplifier being a radio frequency amplifier
H03F 2200/541
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
541Transformer coupled at the output of an amplifier
H03F 2203/21142
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
20Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers
21with semiconductor devices only
211using a combination of several amplifiers
21142Output signals of a plurality of power amplifiers are parallel combined to a common output
Applicants
  • ICERA CANADA ULC [CA]/[CA] (AllExceptUS)
  • BELLAOUAR, Abdellatif [DZ]/[US] (UsOnly)
  • LEE, See Taur [MY]/[US] (UsOnly)
  • FANG, Sher Jiun [MY]/[US] (UsOnly)
  • EMBABI, Sherif H.K. [US]/[US] (UsOnly)
  • MANKU, Tajinder [CA]/[CA] (UsOnly)
Inventors
  • BELLAOUAR, Abdellatif
  • LEE, See Taur
  • FANG, Sher Jiun
  • EMBABI, Sherif H.K.
  • MANKU, Tajinder
Agents
  • HUNG, Shin
Priority Data
61/094,71305.09.2008US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) A PASSIVE TRANSMITTER ARCHITECTURE WITH SWITCHABLE OUTPUTS FOR WIRELESS APPLICATIONS
(FR) ARCHITECTURE D'ÉMETTEUR PASSIF À SORTIES COMMUTABLES POUR DES APPLICATIONS SANS FIL
Abstract
(EN) A transmitter architecture having a single signal path or hardware to cover WCDMA/EDGE/GSM applications, and requires no SAW at the transmitter outputs. The transmitter architecture allows for a transmit convergence feature. A passive mixer with unique driver and furthermore using native devices available from the CMOS process for the mixer cores enables low voltage and low power design, low output noise and high linearity. A digital variable gain amplifier has the capability to cover wide output dynamic range operated from low supply voltage and interfaced digitally with the baseband circuit without DAC. A single transformer is used to combine the outputs from the WCDMA/EDGE and GSM drivers and subsequently convert the differential signal paths into a single-ended signal. RF switches are used to divert the output from the transformer to different bands and applications.
(FR) L'invention concerne une architecture d'émetteur ayant un chemin de signal unique ou un matériel pour couvrir des applications WCDMA/EDGE/GSM, et ne nécessitant aucun SAW au niveau des sorties de l'émetteur. L'architecture d'émetteur prévoit une fonctionnalité de convergence d'émission. Un mélangeur passif avec un gestionnaire unique et utilisant en outre des dispositifs actifs disponibles à partir du processus CMOS pour les noyaux du mélangeur permet une conception de faible tension et de faible puissance, un faible bruit de sortie et une forte linéarité. Un amplificateur de gain variable numérique a la capacité de couvrir une plage dynamique de sortie étendue exploitée à partir d'une faible tension d'alimentation et est interfacé numériquement avec le circuit de bande de base sans DAC. Un transformateur unique est utilisé pour combiner les sorties des gestionnaires WCDMA/EDGE et GSM et convertir ultérieurement les chemins de signaux différentiels en un signal asymétrique. Des commutateurs RF sont utilisés pour dévier la sortie du transformateur vers des bandes et des applications différentes.
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