Helix-spiral combination antenna
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United States of America Patent
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Oct 8, 2013
Grant Date -
May 2, 2013
app pub date -
Nov 2, 2011
filing date -
Nov 2, 2011
priority date (Note) -
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Abstract
Compound antennas are disclosed, as are aircraft comprising compound antennas and methods to use compound antennas. In one embodiment, a compound antenna comprises a ground plane, a helix antenna element comprising a first dielectric core having a first end and a second end and coupled to the ground plane at the first end, the helix antenna element exhibiting a normal mode polarization pattern, and a conical spiral antenna element disposed proximate the helix antenna element, the conical spiral antenna element exhibiting an axial mode polarization pattern, wherein both the normal-mode and the axial mode patterns are circular polarization patterns and have the same sense. Other embodiments may be described.
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