Research ArticleOpen AccessGoogle Scholar indexed
A Subthreshold Low-Voltage Low-Phase-Noise CMOS LC-VCO with Resistive Biasing
Graduate School of Engineering, Osaka University, Osaka, Japan
Graduate School of Engineering, Osaka University, Osaka, Japan
Graduate School of Engineering, Osaka University, Osaka, Japan
Faculty of Engineering, Osaka Institute of Technology, Osaka, Japan
Graduate School of Engineering, Osaka University, Osaka, Japan
- 1 Graduate School of Engineering, Osaka University, Osaka, Japan
- 2 Graduate School of Engineering, Osaka University, Osaka, Japan
- 3 Graduate School of Engineering, Osaka University, Osaka, Japan
- 4 Faculty of Engineering, Osaka Institute of Technology, Osaka, Japan
- 5 Graduate School of Engineering, Osaka University, Osaka, Japan
Copy link · social · email
Abstract
This paper presents a low-phase-noise LC voltage-controlled oscillator (LC-VCO) with top resistive biasing in subthreshold region. The subthreshold LC-VCO has low-power and low-phase-noise due to its high transconductance efficiency and low gate bias condition. The top resistive biasing has more benefit with the feature of phase noise than MOS current source since it can support the low-noise characteristics and large output swing. The LC-VCO designed in 130-nm CMOS process with 0.7-V supply voltage achieves phase noise of -116 dBc/Hz at 200 kHz offset with tuning range of 398 MHz to 408 MHz covering medical implant communication service (MICS) band.
KeywordsVCOResistive BiasingCurrent SourceCMOS Integrated CircuitPhase NoiseMICS Band
- Bradley, P.D. (2006) An Ultra Low Power, High Performance Medical Implant Communication System (MICS) Transceiver for Implantable Devices. IEEE Biomedical Circuits and Systems Conference, London, 29 November-1 December 2006, 158-161.
- Hajimiri, A. and Lee, T.H. (1999) Design Issues in CMOS Differential LC Oscillators. IEEE Journal of Solid-State Circuits, 34, 717-724.
- Soltanian, B. and Kinget, P.R. (2006) Tail Current-Shaping to Improve Phase Noise in LC Voltage-Controlled Oscillators. IEEE Journal of Solid-State Circuits, 41, 1792-1802.
- Svelto, F., Deantoni, S. and Castello, R. (2000) A 1.3 GHz Low-Phase Noise Fully Tunable CMOS LC VCO. IEEE Journal of Solid-State Circuits, 35, 356-361.
- De Astis, G., Cordeau, D., Paillot, J.-M. and Dascalescu, L. (2005) A 5-GHz Fully Integrated Full PMOS Low-Phase-Noise LC VCO. IEEE Journal of Solid-State Circuits, 40, 2087-2091.
- Lee, T.H. and Hajimiri, A. (2000) Oscillator Phase Noise: A Tutorial. IEEE Journal of Solid-State Circuits, 35, 326-336.
- Mazzanti, A. and Andreani, P. (2008) Class-C Harmonic CMOS VCOs, with a General Result on Phase Noise. IEEE Journal of Solid-State Circuits, 43, 2716-2729.
- Yamashita, F., Matsuoka, T., Kihara, T., Takobe, I., Park, H.-J. and Taniguchi, K. (2009) Analytical Design of a 0.5V 5GHz CMOS LC-VCO. IEICE Electronics Express, 6, 1025-1031.
- Andreani, P., Wang, X., Vandi, L. and Fard, A. (2005) A Study of Phase Noise in Colpitts and LC-Tank CMOS Oscillators. IEEE Journal of Solid-State Circuits, 40, 1107-1118.
- Hegazi, E., Sjoland, H. and Abidi, A.A. (2001) A Filtering Technique to Lower LC Oscillator Phase Noise. IEEE Journal of Solid-State Circuits, 36, 1921-1930.
- Andreani, P. and Sjoland, H. (2002) Tail Current Noise Suppression in RF CMOS VCOs. IEEE Journal of Solid-State Circuits, 37, 342-348.
- Burghartz, J.N., Jenkins, K.A. and Soyuer, M. (1996) Multilevel-Spiral Inductors Using VLSI Interconnect Technology. IEEE Electron Device Letters, 17, 428-430.