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Radio receiver having a dynamic bandwidth filter and method therefor

  • US 6,658,245 B2
  • Filed: 03/28/2001
  • Issued: 12/02/2003
  • Est. Priority Date: 03/28/2001
  • Status: Expired due to Term
First Claim
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1. A radio receiver comprising:

  • an input portion having a tuner for selectively receiving an input modulated signal and mixing the input modulated signal with a local signal to generate an intermediate frequency signal;

    a filter bank for receiving the intermediate frequency signal and generating a plurality of sub-band signals, each of the plurality of sub-band signals having a predetermined frequency range;

    a monitoring circuit coupled to the filter bank, the monitoring circuit measuring a predetermined parameter of each of the sub-band signals and providing a plurality of parameter signals in response thereto;

    a control circuit coupled to the monitoring circuit for receiving the plurality of parameter signals, the control circuit provides one or more control signals which determine a percentage of each of the sub-band signals which is permitted to be coupled to an output terminal;

    a summing circuit coupled to the output terminal for receiving the percentage of each of the sub-band signals from the monitoring circuit and adding the percentage of each of the sub-band signals to provide a filtered output signal; and

    a demodulator coupled to the summing circuit for demodulating the filtered output signal to provide an audio output signal with optional data.

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