Title :
A Widlar-bandgap based intermediate-frequency voltage-controlled oscillator for GSM/DCS transceiver ICs
Author :
Dec, Aleksander ; Suyama, Ken ; Kimura, Yasuyuki ; Ichinose, Tsukasa
Author_Institution :
Epoch Microelectron. Inc., White Plains, NY, USA
Abstract :
This paper presents an intermediate-frequency voltage-controlled oscillator using a Widlar-bandgap for stable operation over supply and temperature variations without degrading the phase noise performance. The design is fabricated in a 0.35 μm SOI BiCMOS process and is packaged in a QFN24 plastic package. The VCO operates at 1 GHz with a tuning range of 250 MHz and achieves a phase noise of -113 dBc/Hz at 400 kHz offset from the carrier. The VCO core and buffer consume 4 mA and 11 mA from a 2.7 V power supply, respectively. The IF-VCO is suitable for GSM/DCS transceiver IC applications.
Keywords :
BiCMOS analogue integrated circuits; UHF integrated circuits; UHF oscillators; buffer circuits; cellular radio; circuit stability; circuit tuning; integrated circuit noise; phase noise; plastic packaging; reference circuits; silicon-on-insulator; transceivers; voltage-controlled oscillators; 0.35 micron; 1 GHz; 11 mA; 2.7 V; 4 mA; GSM/DCS transceiver ICs; IF VCO; IF voltage-controlled oscillator; QFN24 plastic package; SOI BiCMOS process; Si; Widlar-bandgap; intermediate-frequency VCO; phase noise performance; stable operation; supply variations; temperature variations; tuning range; BiCMOS integrated circuits; Degradation; Distributed control; GSM; Phase noise; Plastic packaging; Temperature; Transceivers; Tuning; Voltage-controlled oscillators;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2003 IEEE
Print_ISBN :
0-7803-7694-3
DOI :
10.1109/RFIC.2003.1214027
