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Interwoven spiral antenna

  • US 9,118,115 B2
  • Filed: 09/30/2011
  • Issued: 08/25/2015
  • Est. Priority Date: 07/05/2011
  • Status: Active Grant
First Claim
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1. An interwoven spiral antenna assembly comprising:

  • a single transmission interwoven spiral antenna for transmission of RF communication signals comprising;

    a first non-inverted spiral section having a spiral shape;

    a first inverted spiral section having an inverted spiral shape, wherein the first non-inverted spiral section is coupled to the first inverted spiral section at a center point; and

    an excitation region coupled to the first non-inverted spiral section and the first inverted spiral section, wherein, when excited by a first phase shifted signal, the single transmission interwoven spiral antenna has a first circular polarization radiation pattern offset from perpendicular to the single transmission interwoven spiral antenna by phase of excitation of the first phase shifted signal; and

    a single reception interwoven spiral antenna for reception of RF communication signals comprising;

    a second non-inverted spiral section having a spiral shape;

    a second inverted spiral section having an inverted spiral shape, wherein the second non-inverted spiral section is coupled to the second inverted spiral section at a center point; and

    an excitation region coupled to the second non-inverted spiral section and the second inverted spiral section, wherein, when excited by a second phase shifted signal, the single reception interwoven spiral antenna has a second circular polarization radiation pattern offset from perpendicular to the single reception interwoven spiral antenna by phase of excitation of the second phase shifted signal.

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