EP 2022179 A1 20090211 - HIGH EFFICIENCY LINEARIZATION POWER AMPLIFIER FOR WIRELESS COMMUNICATION
Title (en)
HIGH EFFICIENCY LINEARIZATION POWER AMPLIFIER FOR WIRELESS COMMUNICATION
Title (de)
HOCHLEISTUNGS-LINEARISIERUNGSENDVERSTÄRKER ZUR DRAHTLOSEN KOMMUNIKATION
Title (fr)
AMPLIFICATEUR DE PUISSANCE DE LINÉARISATION À HAUTE EFFICACITÉ POUR UNE COMMUNICATION SANS FIL
Publication
Application
Priority
- US 2007010566 W 20070430
- US 79582006 P 20060428
- US 87664006 P 20061222
- US 89774607 P 20070126
- US 89831207 P 20070129
Abstract (en)
[origin: WO2008105775A1] An embodiment of the invention uses a predistortion correction signal to combination the modulated RF signal by an analog multiplier for linearization of power amplifiers having nonlinear characteristics such as those used in wireless RF transmitters. A predistortion controller comprises a plurality of down converters for retrieving both the ideal non-distorted information and the feedback distorted information, together with pre-stored digitally-indexed predistortion information stored, for example, in a look-up table. The digitally- indexed information models nonlinear characteristics of the high power amplifier, and is stored prior to processing of pre-compensation in the power amplifier. When the predistortion information is combined with the modulated RF signal in the analog multiplier, the result is a substantially linear information transmission from the power amplifier.
IPC 8 full level
CPC (source: EP)
H03F 1/3241 (2013.01); H03F 1/3247 (2013.01); H03F 1/3294 (2013.01); H03F 3/24 (2013.01); H03F 2200/57 (2013.01); H03F 2201/3233 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008105775 A1 20080904; EP 2022179 A1 20090211; EP 2022179 A4 20091223
DOCDB simple family (application)
US 2007010566 W 20070430; EP 07861302 A 20070430