A CMOS Low-Noise Low-Power Quadrature

A new quadrature LC voltage-controlled oscillator circuit configuration for CMOS technology is presented. In the proposed circuit two identical cross-connected LC-VCOs are coupled together via the bulk of the cross-connected MOS transistors and the bulk of the MOS varactors. No additional components are needed for coupling the core oscillators. Therefore, no extra noise sources and power consumption are added to the circuit, which results in good phase noise and low power consumption. The circuit can operate with Vdd as low as 0.5 V. A linear analysis of the quadrature operation of the circuit is also provided. The same coupling scheme can be used for multiphase signal generation.

[1]  Andrea Goldsmith,et al.  Wireless Communications , 2005, 2021 15th International Conference on Advanced Technologies, Systems and Services in Telecommunications (TELSIKS).

[2]  M. Tiebout,et al.  Low-power low-phase-noise differentially tuned quadrature VCO design in standard CMOS , 2001, IEEE J. Solid State Circuits.

[3]  S.-L. Jang,et al.  A Low-Voltage Quadrature CMOS VCO Based on Voltage-Voltage Feedback Topology , 2006, IEEE Microwave and Wireless Components Letters.

[4]  Asad A. Abidi,et al.  A single-chip 900-MHz spread-spectrum wireless transceiver in 1-/spl mu/m CMOS. I. Architecture and transmitter design , 1998 .

[5]  Beomsup Kim,et al.  A low-phase-noise CMOS LC oscillator with a ring structure , 2000 .

[6]  Tsuneo Tsukahara,et al.  A 5-GHz frequency-doubling quadrature modulator with a ring-type local oscillator , 1999 .

[7]  Y. Tsividis.  Operation and modeling of the MOS transistor , 1987 .

[8]  Michiel Steyaert,et al.  A single-chip 900 MHz CMOS receiver front-end with a high performance low-IF topology , 1995, IEEE J. Solid State Circuits.

[9]  Hyunchol Shin,et al.  A 1.8-V 6/9-GHz switchable dual-band quadrature LC VCO in SiGe BiCMOS technology , 2002, 2002 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium. Digest of Papers (Cat. No.02CH37280).

[10]  Sang-Gug Lee,et al.  A very low-power quadrature VCO with back-gate coupling , 2004, IEEE J. Solid State Circuits.

[11]  Salvatore Levantino,et al.  A low-phase-noise 5-GHz CMOS quadrature VCO using superharmonic coupling , 2003, IEEE J. Solid State Circuits.

[12]  A.W.L. Ng,et al.  A 1V 17GHz 5mW Quandrature CMOS VCO based on transformer coupling , 2006, 2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers.

[13]  L. Dussopt,et al.  A 900 MHz low phase noise CMOS quadrature oscillator , 2002, 2002 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium. Digest of Papers (Cat. No.02CH37280).

[14]  Ivan Grech,et al.  Comparative study of gigahertz CMOS LC quadrature voltage-controlled oscillators with relevance to phase noise , 2007 .

[15]  C. Meng,et al.  4.9-GHz low-phase-noise transformer-based superharmonic-coupled GaInP/GaAs HBT QVCO , 2006, IEEE Microwave and Wireless Components Letters.

[16]  Behzad Razavi,et al.  High-Speed CMOS Circuits for Optical Receivers , 2001 .