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Auto-Tuning System for an On-Chip RF Filter

  • US 20090325521A1
  • Filed: 12/22/2008
  • Published: 12/31/2009
  • Est. Priority Date: 06/27/2008
  • Status: Active Grant
First Claim
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1. A Radio Frequency Receiver on a Single Integrated Circuit (“

  • RFSIC”

    ), the RFSIC comprising;

    a mixer;

    a phase-locked loop (“

    PLL”

    ) in signal communication with the mixer,wherein the PLL is configured to receive a PLL frequency reference input signal (“

    PFRI signal”

    ) that has a PLL frequency reference input signal frequency (“

    PFRI frequency”

    ) and, in response, the PLL is configured to lock to the PFRI signal and produce a tuning signal, wherein the tuning signal is a voltage signal; and

    an auto-tuned RF filter in signal communication with both the mixer and PLL,wherein the auto-tuned RF filter is configured to have a frequency response,wherein the auto-tuned RF filter is configured to receive the tuning signal from the PLL, and, in response, adjust the frequency response of the auto-tuned RF filter to the tuning signal, andwherein the mixer, PLL, and auto-tuned RF filter are integrated onto a single integrated circuit (“

    IC”

    ).

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