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A fractional-N frequency synthesizer with a wide-band small gain-fluctuation VCO for mobile DTV applications
- Ahn, T.-W.;
- Moon, J.-C.;
- Moon, Y.
초록
A fully integrated Σ-Δ fractional-N frequency synthesizer featuring wide-band and small VCO-gain (KVCO) fluctuation is presented. To cover wide-band frequency operation for mobile DTV applications, 6-bit switched-capacitor bank LC VCO is used, and for small Kvco fluctuation, four self-controlled varactor blocks are added to conventional capacitor bank scheme. The integrated VCO tuning range is as wide as 890 MHz (65%) from 910 MHz to 1.8 GHz, which can cover all the desired frequencies for the DVB-H/ISDB-T/T-DMB receiver and achieves 52% smaller KVCO fluctuation than that of a conventional design. © 2007 IEEE.
- 제목
- A fractional-N frequency synthesizer with a wide-band small gain-fluctuation VCO for mobile DTV applications
- 저자
- Ahn, T.-W.; Moon, J.-C.; Moon, Y.
- 발행일
- 2007
- 학회명
- 2007 7th International Conference on ASIC, ASICON 2007
- 개최지
- Guilin
- 학회 개최일
- 2007-10-26 ~ 2007-10-29