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Helix-loaded spiral antenna

  • US 4,012,744 A
  • Filed: 10/20/1975
  • Issued: 03/15/1977
  • Est. Priority Date: 10/20/1975
  • Status: Expired due to Term
First Claim
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1. Antenna apparatus comprising:

  • a. a planar spiral antenna portion, said planar spiral antenna portion having spiral arm means having inner and outer ends;

    b. a helical antenna portion coupled to the outer ends of said spiral arm means, said helical antenna portion being substantially coaxial with said planar spiral antenna portion; and

    ,c. means coupled to the inner ends of said spiral arm means for energizing said antenna.

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