Design of a wide tuning range VCO using an active inductor

This paper presents a wide tuning range CMOS voltage controlled oscillator suitable for radio frequency operation. The major advantage of this structure is the absence of on-chip inductor, thus reducing significantly the chip area. Measurements results using a 0.35 mum CMOS process from AMS have shown a wide tuning range of 84% of the 915 MHz central frequency and a phase noise around -90 dBc/Hz at 500 kHz offset from the carrier. The power consumption is reduced to less than 10 mW from a 3.3 V supply.

[1]  Rolf Schaumann,et al.  A low-voltage low-power CMOS 5-GHz oscillator based on active inductors , 2002, 9th International Conference on Electronics, Circuits and Systems.

[2]  H. Sjoland,et al.  High performance 1 V 2.4 GHz CMOS VCO , 2002, Proceedings. IEEE Asia-Pacific Conference on ASIC,.

[3]  Alison J. Payne,et al.  Design of a low-voltage, low-power, wide-tuning integrated oscillator , 2000, 2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353).

[4]  R. Schaumann,et al.  A high-frequency high-Q CMOS active inductor with DC bias control , 2000, Proceedings of the 43rd IEEE Midwest Symposium on Circuits and Systems (Cat.No.CH37144).

[5]  Frank Herzel,et al.  Integrated CMOS wideband oscillator for RF applications , 2001 .

[6]  H. Barthelemy,et al.  NMOS transistors based Karsilayan & Schaumann gyrator :'lowpass and bandpass filter applications' , 2003, 2003 46th Midwest Symposium on Circuits and Systems.