A GSM-GPRS/UMTS FDD-TDD/WLAN 802.11a-b-g multi-standard carrier generation system

• Published in: IEEE journal of solid-state circuits 2006-07, Vol.41 (7), p.1513-1521
• Main Authors: Koukab, A., Yu Lei, Declercq, M.J.
• Format: Article
• Language: English
• Subjects: 3G mobile communication; Analog front-end (AFE); Applied sciences; Carriers; Circuit properties; Circuits of signal characteristics conditioning (including delay circuits); Electric, optical and optoelectronic circuits; Electronic circuits; Electronics; Exact sciences and technology; frequency synthesizer; GSM; Hardware; Input-output equipment; Local area networks; multi-standard; Multiaccess communication; Noise; Noise measurement; Offsets; Oscillators, resonators, synthetizers; Phase measurement; Phase noise; phase-locked loop (PLL); Specifications; Standards development; Tuning; UMTS; voltage-controlled oscillator (VCO); Voltage-controlled oscillators; Wireless communication; wireless communications; Wireless LAN; WLAN
• ISSN: 0018-9200; 1558-173X
• DOI: 10.1109/JSSC.2006.873928

A compact carrier generation system enabling proper interoperability among quad-band GSM, WCDMA (FDD and TDD), and WLAN (802.11a/b/g) standards is developed. The implementation is achieved in 0.25-mum BiCMOS-SiGe process. The measured tuning range is higher that 1 GHz (3.05 to 4.1 GHz) exceeding the specifications by 25%. The voltage-controlled oscillator (VCO) exhibits a phase noise of -118 and -125 dBc/Hz measured, respectively, at 400 kHz and 1 MHz offsets while drawing 2.5 mA from 2.5 V supply. The measured phase noise at 400 kHz offset of the PCS/DCS output local-oscillator (LO) signal and the GSM output LO signal is, respectively, -124 dBc/Hz and -130 dBc/Hz