ETRI Journal

  • 제33권2호
  • /
  • Pages.201-209
  • /
  • 2011
  • /
  • 1225-6463(pISSN)
  • /
  • 2233-7326(eISSN)
한국전자통신연구원 (Electronics and Telecommunications Research Institute)
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Wide-Band Fine-Resolution DCO with an Active Inductor and Three-Step Coarse Tuning Loop

  • Pu, Young-Gun (Department of Electronic Engineering, Konkuk University) ;
  • Park, An-Soo (Department of Electronic Engineering, Konkuk University) ;
  • Park, Joon-Sung (Department of Electronic Engineering, Konkuk University) ;
  • Moon, Yeon-Kug (Department of Biomicrosystem Technology, Korea University) ;
  • Kim, Su-Ki (Department of Electronics Engineering, Korea University) ;
  • Lee, Kang-Yoon (Department of Electronic Engineering, Konkuk University)
  • 투고 : 2010.04.08
  • 심사 : 2010.09.20
  • 발행 : 2011.04.30
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초록

This paper presents a wide-band fine-resolution digitally controlled oscillator (DCO) with an active inductor using an automatic three-step coarse and gain tuning loop. To control the frequency of the DCO, the transconductance of the active inductor is tuned digitally. To cover the wide tuning range, a three-step coarse tuning scheme is used. In addition, the DCO gain needs to be calibrated digitally to compensate for gain variations. The DCO tuning range is 58% at 2.4 GHz, and the power consumption is 6.6 mW from a 1.2 V supply voltage. An effective frequency resolution is 0.14 kHz. The phase noise of the DCO output at 2.4 GHz is -120.67 dBc/Hz at 1 MHz offset.

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참고문헌

  1. R.B. Staszewski et al., "Digitally Controlled Oscillator (DCO)-Based Architecture for RF Frequency Synthesis in a Deep- Submicrometer CMOS Process," IEEE Trans. Circuits Syst. II, vol. 50, no. 11, Nov. 2003, pp. 815-828. https://doi.org/10.1109/TCSII.2003.819128
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피인용 문헌

  1. Fast sampling DCO for 2.4 GHz wake-up receiver vol.52, pp.5, 2011, https://doi.org/10.1049/el.2015.3884