Title :
RF Bandpass Delta-Sigma Modulators for highly-efficient Class-S transmitters in SiGe BiCMOS technology
Author :
Scheytt, J.C. ; Ostrovskyy, P. ; Gustat, H.
Author_Institution :
IHP GmbH, Frankfurt (Oder), Germany
fDate :
Aug. 28 2010-Sept. 3 2010
Abstract :
In this paper an overview of different RF BDSMs at 450 MHz, 900 MHz, and 2.14 GHz is presented. The BDSMs were specifically designed for use in Class-S transmitters. Different BDSM architectures are discussed and implemented with the goal to reduce the BDSM clock frequency and hence the PA switching speed requirements. The BDSMs are realized as continuous-time 1-bit bandpass delta-sigma modulators using modern SiGe BiCMOS technologies.
Keywords :
BiCMOS analogue integrated circuits; Ge-Si alloys; clocks; delta-sigma modulation; power amplifiers; radiofrequency integrated circuits; BDSM architecture; BiCMOS technology; PA switching speed; RF BDSM; RF bandpass delta-sigma modulator; SiGe; class-S transmitter; clock frequency; frequency 2.14 GHz; frequency 450 MHz; frequency 900 MHz; power amplifier; Frequency modulation; Peak to average power ratio; Power amplifiers; Radio frequency; Switches; Time frequency analysis;
Conference_Titel :
Wireless Information Technology and Systems (ICWITS), 2010 IEEE International Conference on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-7091-4
DOI :
10.1109/ICWITS.2010.5611908
