Design of 5 GHz low-power CMOS LC VCO based on complementary cross-coupled topology with modified tail current-shaping technique

In this paper, a low-power CMOS LC voltage-controlled oscillator (VCO) with body-biasing and low-phase noise with Q-enhancement techniques is presented. A self-body biased circuit is introduced that can reduce power consumption. Some derivations of the Q-enhancement and how to improve the phase noise of the circuit are also discussed. This chip is implemented by the Taiwan Semiconductor Manufacture Company 0.18 µm 1P6M process. The measurement results exhibit a tuning range of 14.7% from 4.92 to 5.7 GHz at a supply voltage of 1.4 V. The power consumption of the core circuit and figure of merit are 2.5 mW and −188.6 dBc/Hz. The phase noise is −118 dBc/Hz@1 MHz at an operation frequency of 4.94 GHz.

[1]  E. Hegazi,et al.  23.4 A Filtering Technique to Lower Oscillator Phase Noise , 2008 .

[2]  A. Sedra.  Microelectronic circuits , 1982 .

[3]  Carlo Samori,et al.  Spectrum folding and phase noise in LC tuned oscillators , 1998 .

[4]  Lu Huang,et al.  A 0.65 mW 2.3–2.5GHz low phase noise LC-VCO with adaptive body biasing technique , 2011, 2011 IEEE International Symposium on Radio-Frequency Integration Technology.

[5]  Songcheol Hong,et al.  A 12-GHz Fully Integrated Cascode CMOS $LC$ VCO With $Q$-Enhancement Circuit , 2008, IEEE Microwave and Wireless Components Letters.

[6]  Yeong-Her Wang,et al.  A 5 GHz Differential Colpitts CMOS VCO Using the Bottom PMOS Cross-Coupled Current Source , 2009, IEEE Microwave and Wireless Components Letters.

[7]  Kaixue Ma,et al.  A low power wide tuning range low phase noise VCO using coupled LC tanks , 2011, 2011 Semiconductor Conference Dresden.

[8]  Sheng-Lyang Jang,et al.  A 5.6 GHz Low Power Balanced VCO in 0.18 $\mu$m CMOS , 2009, IEEE Microwave and Wireless Components Letters.

[9]  E. Klumperink,et al.  Reducing MOSFET 1/f noise and power consumption by switched biasing , 1999, IEEE Journal of Solid-State Circuits.

[11]  B. Razavi.  On the Use of MOS Varactors in RF VCO's , 2003 .

[12]  E. Klumperink,et al.  Intrinsic 1/f device noise reduction and its effect on phase noise in CMOS ring oscillators , 1999, IEEE J. Solid State Circuits.

[13]  Meng-Ting Hsu,et al.  Design a 5GHz low power CMOS LC VCO for IEEE 802.11a application , 2010, 2010 Asia-Pacific Microwave Conference.

[14]  A. A. Abidi,et al.  Wireless transceivers in CMOS IC technology. The new wave , 1999, 1999 International Symposium on VLSI Technology, Systems, and Applications. Proceedings of Technical Papers. (Cat. No.99TH8453).

[15]  Seonghwan Cho,et al.  An Adaptive Body-Biased VCO with Voltage-Boosted Switched Tuning in 0.5-V Supply , 2006, 2006 Proceedings of the 32nd European Solid-State Circuits Conference.

[16]  Hong-Yeh Chang,et al.  Design and analysis of two modified Colpitts VCOS with and without transformer feedback , 2011, 2011 6th European Microwave Integrated Circuit Conference.

[17]  Michiel Steyaert,et al.  A 1.8-GHz low-phase-noise CMOS VCO using optimized hollow spiral inductors , 1997, IEEE J. Solid State Circuits.

[18]  Ali Hajimiri,et al.  A general theory of phase noise in electrical oscillators , 1998 .

[19]  To-Po Wang,et al.  A 0.4-V 1.08-mW 12-GHz high-performance VCO in 0.18-µm CMOS , 2012, 2012 IEEE Radio and Wireless Symposium.

[20]  S.-L. Jang,et al.  5-GHz Low Power Current-Reused Balanced CMOS Differential Armstrong VCOs , 2007, IEEE Microwave and Wireless Components Letters.

[21]  Sheng-Lyang Jang,et al.  A 5.6 GHz Low Power Balanced VCO in 0.18 $\mu$ m CMOS , 2009 .

[22]  A. Abidi,et al.  Physical processes of phase noise in differential LC oscillators , 2000, Proceedings of the IEEE 2000 Custom Integrated Circuits Conference (Cat. No.00CH37044).

[23]  P. Andreani,et al.  On the use of MOS varactors in RF VCOs , 2000, IEEE Journal of Solid-State Circuits.

[24]  A.M. Davis,et al.  Microelectronic circuits , 1983, Proceedings of the IEEE.

[25]  M. Tiebout,et al.  Reduction of low-frequency noise in MOSFETs under switched gate and substrate bias , 2008, ESSDERC 2008 - 38th European Solid-State Device Research Conference.

[26]  SeongHwan Cho,et al.  Design Techniques for a Low-Voltage VCO With Wide Tuning Range and Low Sensitivity to Environmental Variations , 2009, IEEE Transactions on Microwave Theory and Techniques.

[27]  P.R. Kinget,et al.  Tail Current-Shaping to Improve Phase Noise in LC Voltage-Controlled Oscillators , 2006, IEEE Journal of Solid-State Circuits.

[28]  Ping-Keung Ko,et al.  A physics-based MOSFET noise model for circuit simulators , 1990 .

[29]  Huei Wang,et al.  A 5-GHz low phase noise differential colpitts CMOS VCO , 2005, IEEE Microwave and Wireless Components Letters.

[30]  Phillip E Allen,et al.  CMOS Analog Circuit Design , 1987 .

[31]  Yijoo Shin,et al.  A Low Phase Noise Fully Integrated CMOS LC VCO Using a Large Gate Length pMOS Current Source and Bias Filtering Technique for 5-GHz WLAN , 2007, 2007 International Symposium on Signals, Systems and Electronics.

[32]  Albert Chin,et al.  A Low-Power K-Band CMOS VCO With Four-Coil Transformer Feedback , 2010, IEEE Microwave and Wireless Components Letters.

[33]  Ali Hajimiri,et al.  Concepts and methods in optimization of integrated LC VCOs , 2001, IEEE J. Solid State Circuits.

[34]  H.C. Luong,et al.  Ultra-low-Voltage high-performance CMOS VCOs using transformer feedback , 2005, IEEE Journal of Solid-State Circuits.