Title :
An RFIC within a direct open-loop polar multimode transmitter for UMTS/EDGE/GSM
Author :
Osman, Saleh ; Lee, Wayne ; McCune, Earl ; Hirano, Shunsuke ; Maeda, Masakatsu ; Ishida, Kaoru
Author_Institution :
Panasonic Emerging Adv. RF Lab., Santa Clara, CA
fDate :
June 17 2008-April 17 2008
Abstract :
An RFIC within a direct open-loop polar multimode transmitter that supports UMTS, GSM, and EDGE is shown in 0.18 mum CMOS. Design details, and chipset system application are explained. The chip architecture applies phase accurate FLL two-point modulator with SigmaDelta feedback control for AM-PM corrected wideband phase modulation to an LC VCO, and AM-AM corrected envelope drive of multi-stage saturated PA. IC measurement results and chip-set system performance are presented.
Keywords :
3G mobile communication; CMOS integrated circuits; cellular radio; radio transmitters; radiofrequency integrated circuits; AM-AM corrected envelope drive; AM-PM corrected wideband phase modulation; EDGE; FLL two-point modulator; GSM; IC measurement results; LC VCO; RFIC; SigmaDelta feedback control; UMTS; chip-set system performance; direct open-loop polar multimode transmitter; multi-stage saturated PA; size 0.18 micron; 3G mobile communication; Feedback control; Frequency locked loops; GSM; Phase measurement; Phase modulation; Radiofrequency integrated circuits; Transmitters; Voltage-controlled oscillators; Wideband; CMOS integrated circuit; polar modulation; power amplifiers; transmitter;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2008. RFIC 2008. IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1808-4
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2008.4561503
