SEMICONDUCTOR INTEGRATED CIRCUITS

A 2.4 GHz high-linearity low-phase-noise CMOS LC-VCO based on capacitance compensation

Li Zhenrong, Zhuang Yiqi, Li Bing, Jin Gang and Jin Zhao

+ Author Affiliations

PDF

Abstract: A 2.4 GHz high-linearity low-phase-noise cross-coupled CMOS LC voltage-controlled oscillator (VCO) is implemented in standard 0.18-μm CMOS technology. An equalization structure for tuning sensitivity base on the three-stage distributed biased switched-varactor bank and the differential switched-capacitor bank is adopted to reduce the variations of the VCO gain, achieve high linearity, and optimize the phase-noise performance. Compared to the conventional VCO, the proposed VCO has more constant gain over the entire tuning range. The tuning range is about 18.7% from 2.23 to 2.69 GHz, and the phase noise is -95 dBc/Hz at 100-kHz offset and -117 dBc/Hz at 1-MHz offset from the carrier frequency of 2.42 GHz. The power dissipation is 2.1 mW from a 1.8 V power supply. The active area of this VCO is 500 × 810 μm2.

Key words: switched-capacitorvaractorVCOphase noisetuning rangelinearity

  • Search

    Advanced Search >>

    GET CITATION

    shu

    Export: BibTex EndNote

    Article Metrics

    Article views: 4056 Times PDF downloads: 4884 Times Cited by: 0 Times

    History

    Received: 18 August 2015 Revised: 26 January 2010 Online: Published: 01 July 2010

    Catalog

      Email This Article

      User name:
      Email:*请输入正确邮箱
      Code:*验证码错误
      Li Zhenrong, Zhuang Yiqi, Li Bing, Jin Gang, Jin Zhao. A 2.4 GHz high-linearity low-phase-noise CMOS LC-VCO based on capacitance compensation[J]. Journal of Semiconductors, 2010, 31(7): 075005. doi: 10.1088/1674-4926/31/7/075005 Li Z R, Zhuang Y Q, Li B, Jin G, Jin Z. A 2.4 GHz high-linearity low-phase-noise CMOS LC-VCO based on capacitance compensation[J]. J. Semicond., 2010, 31(7): 075005. doi:  10.1088/1674-4926/31/7/075005.Export: BibTex EndNote
      Citation:
      Li Zhenrong, Zhuang Yiqi, Li Bing, Jin Gang, Jin Zhao. A 2.4 GHz high-linearity low-phase-noise CMOS LC-VCO based on capacitance compensation[J]. Journal of Semiconductors, 2010, 31(7): 075005. doi: 10.1088/1674-4926/31/7/075005

      Li Z R, Zhuang Y Q, Li B, Jin G, Jin Z. A 2.4 GHz high-linearity low-phase-noise CMOS LC-VCO based on capacitance compensation[J]. J. Semicond., 2010, 31(7): 075005. doi:  10.1088/1674-4926/31/7/075005.
      Export: BibTex EndNote

      A 2.4 GHz high-linearity low-phase-noise CMOS LC-VCO based on capacitance compensation

      doi: 10.1088/1674-4926/31/7/075005
      • Received Date: 2015-08-18
      • Accepted Date: 2009-11-28
      • Revised Date: 2010-01-26
      • Published Date: 2010-07-05

      Catalog

        /

        DownLoad:  Full-Size Img  PowerPoint
        Return
        Return