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1. (WO2010121968) AMPLIFIER FOR ELECTRODELESS HIGH INTENSITY DISCHARGE (EHID) LAMPS WITH MULTIPLE STAGES, VARIABLE SUPPLY VOLTAGE, BIASING AND TUNING, EHID-SYSTEM AND METHOD FOR OPERATING AN EHID-SYSTEM

Pub. No.:    WO/2010/121968    International Application No.:    PCT/EP2010/055050
Publication Date: Fri Oct 29 01:59:59 CEST 2010 International Filing Date: Sat Apr 17 01:59:59 CEST 2010
IPC: H05B 41/28
H03F 3/189
Applicants: OSRAM GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG
SIEßEGGER, Bernhard
Inventors: SIEßEGGER, Bernhard
Title: AMPLIFIER FOR ELECTRODELESS HIGH INTENSITY DISCHARGE (EHID) LAMPS WITH MULTIPLE STAGES, VARIABLE SUPPLY VOLTAGE, BIASING AND TUNING, EHID-SYSTEM AND METHOD FOR OPERATING AN EHID-SYSTEM
Abstract:
The application relates to an RF amplifier for Electrodeless High Intensity Discharge Lamps (EHID). The RF amplifier comprises a plurality of amplifier stages (PA1-PAn) that are coupled between an input signal power divider (PD) and an output signal power combiner (PC). While the amplifier stages receive, amplify and output in parallel the RF signal, their DC supply terminals are connected in series between a DC supply voltage terminal (VCC) and ground. Thus, each amplifier stage (PA1-PAn) is operated at a DC voltage that is lower than DC supply voltage (VCC).