论文信息 - An X-band CMOS quadrature balanced VCO

An X-band CMOS quadrature balanced VCO

A new quadrature balanced voltage controlled oscillator (B-VCO) is presented. The quadrature and single B-VCO with identical components are implemented in 0.18 /spl mu/m CMOS technology. The quadrature B-VCO has lower phase noise, higher oscillation frequency and higher figure of merit (FOM) than the single B-VCO. The measured phase noise values of the single and quadrature VCO are -114.83 and -116.67 dBc/Hz at the offset frequencies of 1 MHz at the center frequency of 10.21 and 10.81 GHz, respectively. Both VCO cores consume about 8.8 mA from a 1.8 V supply. The FOM of 183 and 185 dB are achieved in the quadrature and single VCO respectively.

Songcheol Hong | Sangsoo Ko | Dong-Woo Kang | Hui Dong Lee

[1] D. Kasperkovitz,et al. Analysis and design of an optimally coupled 5-GHz quadrature LC oscillator , 2002, IEEE J. Solid State Circuits.

[2] Electronics Letters , 1965, Nature.

[3] Songcheol Hong,et al. Ku-band InGaP-GaAs HBT MMIC VCOs with balanced and differential topologies , 2004 .

[4] Mourad N. El-Gamal,et al. A CMOS VCO architecture suitable for sub-1 volt high-frequency (8.7-10 GHz) RF applications , 2001, ISLPED '01.

[5] Songcheol Hong,et al. 8-GHz CMOS quadrature VCO using transformer-based LC tank , 2003 .

[6] M. A. Do,et al. Fully integrated 10 GHz CMOS VCO , 2001 .

[7] Ali Hajimiri,et al. A noise-shifting differential Colpitts VCO , 2002, IEEE J. Solid State Circuits.

[8] M.N. El-Gamal,et al. A high figure of merit and area-efficient low-voltage (0.7-1 V) 12 GHz CMOS VCO , 2003, IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, 2003.

[9] HongMo Wang. A 9.8 GHz back-gate tuned VCO in 0.35 /spl mu/m CMOS , 1999 .

[10] A. Bonfanti,et al. Analysis and design of a 1.8-GHz CMOS LC quadrature VCO , 2002, IEEE J. Solid State Circuits.

[11] Marc Tiebout. Physical scaling of integrated inductor layout and model and its application to WLAN VCO design at 11GHz and 17GHz , 2003, Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03..