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Systems and methods for reducing radio receiver interference from an on-board avionics transmitter

  • US 7,142,818 B2
  • Filed: 02/13/2003
  • Issued: 11/28/2006
  • Est. Priority Date: 02/13/2003
  • Status: Active Grant
First Claim
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1. A system for reducing radio interference between a radio transmitter and a radio receiver located in a common aircraft and operating in a common radio frequency band, comprising:

  • an analog-to-digital converter for converting signals representative of the common radio frequency band to a digital data stream;

    a signal processor for (a) processing the digital data stream to detect presence of a first radio signal, within the common radio frequency band and from the radio transmitter, (b) generating a control signal indicative of the first radio signal, and (c) demodulating one or more second radio signals from the radio receiver for output as one or more user selected channels; and

    an adaptive notch filter responsive to the control signal for attenuating the first radio signal to reduce interference between the first radio signal and the output.

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