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Wireless transceiving apparatus for variability of signal processing band

  • US 7,773,953 B2
  • Filed: 09/12/2005
  • Issued: 08/10/2010
  • Est. Priority Date: 12/17/2004
  • Status: Active Grant
First Claim
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1. A wireless transceiving apparatus for variability of signal processing band, comprising:

  • an analog processor having a plurality of components on a path of transmission/reception signals, for performing analog signal processing, the components include at least one resonator;

    a digital processor for performing digital signal processing on an output signal of the analog processor or data to be transmitted to the analog processor; and

    a frequency synthesizer for providing anyone of a plurality of local oscillation (LO) frequencies among a signal processing band for tuning the analog processor at the provided LO frequency and for providing a resonator controlling signal to at least one resonator of the analog processor so as to vary tuning along the signal processing band of the analog processor when a different LO frequency is provided from the frequency synthesizer to the analog processorwherein the frequency synthesizer controls a frequency of a voltage controlled oscillator (VCO) and a resonance frequency of the signal processors to have a rational number ratio relative to the provided LO frequency, wherein the frequency synthesizer provides the resonator controlling signal to the VCO and to the analog processor,wherein the frequency synthesizer includes;

    a phase locked loop (PLL) for feeding back an output signal of the VCO until the output signal reaches a predetermined frequency and for providing the resonator controlling signal to at least one resonator of the analog processor;

    the VCO for generating the predetermined frequency signal in response to the output signal of the PLL; and

    a frequency adjuster for adjusting the frequency of the output signal of the VCO into anyone of the LO frequencies and for providing the provided LO frequency to the analog processor.

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