Interwoven spiral antenna

摘要

An interwoven spiral antenna includes a non-inverted spiral section, an inverted spiral section, and an excitation region. The non-inverted spiral section has a spiral shape and the inverted spiral section has an inverted spiral shape. The excitation region is coupled to at least one of the non-inverted spiral section and the inverted spiral section, wherein, when excited, the interwoven spiral antenna has a circular polarization.

主权项

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; andan 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; andan 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.