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Method of selectively reducing spectral components in a wideband radio frequency signal

  • US 5,519,890 A
  • Filed: 08/22/1995
  • Issued: 05/21/1996
  • Est. Priority Date: 06/28/1993
  • Status: Expired due to Fees
First Claim
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1. A method of selectively reducing a bandwidth of spectral components of a wideband multi-carrier analog radio frequency (RF) signal at an input to an analog-to-digital (A/D) converter having digitized samples as an output, such method comprising the steps of:

  • analyzing the digital samples of the carriers for relatively large spectral peaks; and

    applying a notch filter to the input of the analog-to-digital (A/D) converter to reduce the relatively large spectral peaks to a threshold value, whereby the notch filter is applied to selected carrier having large spectral peaks exceeding the threshold value and not to carriers having spectral peaks below the threshold value.

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