EP 1550230 A2 20050706 - TRANSMITTER AND METHOD OF TRANSMISSION USING SEPARATE PHASE AND AMPLITUDE MODULATORS
Title (en)
TRANSMITTER AND METHOD OF TRANSMISSION USING SEPARATE PHASE AND AMPLITUDE MODULATORS
Title (de)
SENDER UND VERFAHREN ZUR ÜBERTRAGUNG UNTER VERWENDUNG GETRENNTER PHASEN- UND AMPLITUDENMODULATOREN
Title (fr)
SYSTEMES D'EMETTEUR A ONDES ELECTROMAGNETIQUES, PROCEDES ET ARTICLES DE FABRICATION
Publication
Application
Priority
- US 0331779 W 20031007
- US 41686102 P 20021008
- US 41731102 P 20021008
- US 45469703 A 20030604
Abstract (en)
[origin: WO2004034603A2] A transmitter comprises a baseband processor, a wideband phase modulator and an amplitude modulated amplifier. A signal is provided through the baseband processor and is converted into polar coordinates, comprised of amplitude and phase components, with the amplitude component being transmitted to the amplitude modulated amplifier. The amplitude modulated amplifier being comprised of independently controllable current sources, and with the phase component being transmitted to the wideband phase modulator, for modulation upon a carrier wave, and subsequent transmission to the amplitude modulated amplifier for amplification according to control imposed by the amplitude component upon the current sources.
IPC 1-7
IPC 8 full level
H03F 3/24 (2006.01); H04L 27/00 (2006.01); H04L 27/36 (2006.01)
CPC (source: EP)
H03F 3/24 (2013.01); H04L 27/0008 (2013.01); H04L 27/361 (2013.01)
Citation (search report)
See references of WO 2004034603A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004034603 A2 20040422; WO 2004034603 A3 20040527; AU 2003275475 A1 20040504; AU 2003275475 A8 20040504; EP 1550230 A2 20050706; JP 2006502682 A 20060119
DOCDB simple family (application)
US 0331779 W 20031007; AU 2003275475 A 20031007; EP 03759753 A 20031007; JP 2005501112 A 20031007