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Jamming signal cancellation system

  • US 5,363,104 A
  • Filed: 09/24/1974
  • Issued: 11/08/1994
  • Est. Priority Date: 02/28/1974
  • Status: Expired due to Term
First Claim
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1. In a radar system, apparatus for recovering desired radar signals from an input signal which includes noise jamming signals of higher intensity, comprising:

  • a balanced modulator;

    means for applying a portion of the input signal to one input of said balanced modulator;

    means for detecting the difference frequency produced by the beating of the desired signal with the jamming signal; and

    means for applying said detected signal to a second input of said balanced modulator whereby the output of said balanced modulator will contain the desired signal but not the jamming signal.

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