A Low Power and Low Noise On-Chip Active RF Tracking Filter for Digital TV Tuner ICs

DOI Web Site 11 References
  • SUN Yang
    u-Radio Lab, Electrical Engineering Department, Korea Advanced Institute of Science and Technology, Daejeon (KAIST)
  • JEONG Chang-Jin
    u-Radio Lab, Electrical Engineering Department, Korea Advanced Institute of Science and Technology, Daejeon (KAIST)
  • LEE In-Young
    u-Radio Lab, Electrical Engineering Department, Korea Advanced Institute of Science and Technology, Daejeon (KAIST)
  • LEE Sang-Gug
    u-Radio Lab, Electrical Engineering Department, Korea Advanced Institute of Science and Technology, Daejeon (KAIST)

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Abstract

In this paper, a highly linear and low noise CMOS active RF tracking filter for a digital TV tuner is presented. The Gm cell of the Gm-C filter is based on a dynamic source degenerated differential pair with an optimized transistor size ratio, thereby providing good linearity and high-frequency operation. The proposed RF tracking filter architecture includes two complementary parallel paths, which provide harmonic rejection in the low band and unwanted signal rejection in the high band. The fabricated tracking filter based on a 0.13µm CMOS process shows a 48∼860MHz tracking range with 30-32dB 3rd order harmonic rejection, a minimum input referred noise density of 2.4nV/√Hz, and a maximum IIP3 of 0dBm at 3dB gain while drawing 39mA from a 1.2-V supply. The total chip area is 1mm × 0.9mm.

Journal

  • IEICE Transactions on Electronics

    IEICE Transactions on Electronics E94-C (10), 1698-1701, 2011

    The Institute of Electronics, Information and Communication Engineers

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