EP 1958405 A2 20080820 - RF MODULATED CARRIER SIGNAL GENERATION WITH BANDPASS PULSE WIDTH MODULATION
Title (en)
RF MODULATED CARRIER SIGNAL GENERATION WITH BANDPASS PULSE WIDTH MODULATION
Title (de)
ERZEUGUNG EINES HF-MODULIERTEN TRÄGERSIGNALS MIT BANDPASS-PULSWEITENMODULIERUNG
Title (fr)
CREATION D'UN SIGNAL DE PORTEUSE RF MODULE A BANDE PASSANTE MODULEE EN LARGEUR D'IMPULSION
Publication
Application
Priority
- IB 2006003370 W 20061127
- EP 05026267 A 20051201
- EP 06842209 A 20061127
Abstract (en)
[origin: WO2007063387A2] A modulator and method for generation of a pulse width modulated carrier signal for efficient wireless transmitters for transmission of varying envelope signals is provided. Generally, the new structure of a pulse width modulator consists of serial and separate execution of the required phase and amplitude modulation processes. A first solution with single-edge pulse width modulation is disclosed in which unwanted phase shifting by the amplitude modulation process can be compensated. Further, a second solution with double-edge pulse width modulation is disclosed in which unwanted phase fluctuation by the amplitude modulation process is avoided and thus, efforts for phase correction can be reduced.
IPC 8 full level
H04L 25/49 (2006.01)
CPC (source: EP)
H03C 5/00 (2013.01); H03F 3/191 (2013.01); H03F 3/217 (2013.01); H04L 25/4902 (2013.01); H04L 27/361 (2013.01)
Citation (search report)
See references of WO 2007063387A2
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 NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007063387 A2 20070607; WO 2007063387 A3 20070927; CN 101322368 A 20081210; EP 1958405 A2 20080820
DOCDB simple family (application)
IB 2006003370 W 20061127; CN 200680044942 A 20061127; EP 06842209 A 20061127