EP 1573899 A2 20050914 - TRANSMITTER STAGE
Title (en)
TRANSMITTER STAGE
Title (de)
SENDESTUFE
Title (fr)
ETAGE D'EMISSION
Publication
Application
Priority
- DE 10259356 A 20021218
- EP 0312736 W 20031114
Abstract (en)
[origin: WO2004055971A2] The invention relates to a transmitter stage working according to the envelope restoration principle. Said stage comprises a device (14) for providing an amplitude representation and a phase representation of an amplitude and phase modulated signal which is to be sent, a phase control loop (PLL) with a feed-forward branch (16) and a feedback branch (17) and an amplification control device (21) which is embodied in such a manner that is can transform the amplitude representation into an amplification control signal which can be fed into in the amplification control input of a non-linear power amplifier. A digital/analog converter is arranged in the feed-forward branch (16). Additionally, an analog/digital converter is arranged in the feedback branch (17) such that the phase detector of the phase control loop is embodied in a digital form. The invention provides a transmitter stage which is precise and which can be economically implemented as a result of a large amount of digital signal processing.
IPC 1-7
IPC 8 full level
H04L 27/20 (2006.01); H04L 27/34 (2006.01)
CPC (source: EP US)
H04L 27/2017 (2013.01 - EP US); H04L 27/34 (2013.01 - EP US)
Citation (search report)
See references of WO 2004055971A2
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 2004055971 A2 20040701; WO 2004055971 A3 20040812; AU 2003286169 A1 20040709; CA 2515578 A1 20040701; CN 1729617 A 20060201; DE 10259356 A1 20040715; EP 1573899 A2 20050914; US 2006008029 A1 20060112
DOCDB simple family (application)
EP 0312736 W 20031114; AU 2003286169 A 20031114; CA 2515578 A 20031114; CN 200380106793 A 20031114; DE 10259356 A 20021218; EP 03776903 A 20031114; US 15583805 A 20050617