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System for obtaining pulse compression in the frequency domain

  • US 4,092,603 A
  • Filed: 09/16/1976
  • Issued: 05/30/1978
  • Est. Priority Date: 09/16/1976
  • Status: Expired due to Term
First Claim
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1. A system for removing phase coding and distortion from a coded input pulse signal having a pulse width τ

  • to achieve signal compression in the frequency domain comprising;

    a. a local oscillator for generating a constant frequency signal,b. a first mixer for combining the coded input pulse signal and the constant frequency signal to form a resultant signal,c. an upper sideband bandpass filter for processing the resultant signal to obtain an upper sideband signal,d. a second mixer for combining the coded input pulse signal and the upper sideband signal to obtain an unfiltered output signal, ande. a lower sideband bandpass filter coupled to the second mixer for filtering the unfiltered output signal to obtain an output pulse signal having a pulse width substantially equal to τ

    independent of the frequency or phase of the coded input signal.

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