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Frequency translating phase conjugation circuit for active retrodirective antenna array

  • US 4,233,606 A
  • Filed: 12/29/1978
  • Issued: 11/11/1980
  • Est. Priority Date: 12/29/1978
  • Status: Expired due to Term
First Claim
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1. In an active retrodirective array of antenna elements, a separate frequency shifting phase conjugation means associated with and coupled to each element by a transmission line for receiving a signal of phase φ

  • 1 from the associated element over said transmission line and transmitting to the associated element a signal of conjugate phase φ

    1 * equal to R(2φ

    o

    1) where φ

    o is a signal of reference phase from a chosen element of said array, R is the reciprocal of 1-2/n and n is an integer equal to or greater than 4.

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