Dipole for hemispherical coverage antenna
AssigneeThe Boeing Company
InventorJohn E. Baldauf
Life of this patent
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Abstract
Systems and methods for providing an antenna enabling hemispherical coverage are disclosed. The system includes a conductive enclosure having an open portion and a closed portion. The system further includes a pair of perpendicularly-disposed dipole antennas. Each antenna of the perpendicularly-disposed dipole antennas includes a pair of conductors extending to a pair of tips disposed outside of the open portion of the conductive enclosure. The system further includes a hybrid coupler having a pair of output terminals coupled to each pair of conductors of each antenna of the perpendicularly-disposed dipole antennas. The hybrid coupler is configured to apply signals of equal magnitude to the each antenna of the perpendicularly-disposed dipole antennas that differ in phase by ninety degrees.
Claims20
A system, comprising:
- a conductive enclosure, wherein the conductive enclosure includes an open portion and a closed portion;
- a pair of perpendicularly-disposed dipole antennas, wherein each antenna of the pair of perpendicularly-disposed dipole antennas includes a pair of conductors extending to a pair of tips disposed outside of the open portion of the conductive enclosure;
- and
- a hybrid coupler, the hybrid coupler having a pair of output terminals coupled to each pair of conductors of each antenna of the pair of perpendicularly-disposed dipole antennas, wherein the hybrid coupler is configured to apply signals of equal magnitude to the pair of perpendicularly-disposed dipole antennas that differ in phase by ninety degrees.
A system, comprising:
- a conductive enclosure, wherein the conductive enclosure includes an open portion;
- and
- a first dipole antenna having tips disposed outside of the open portion of the conductive enclosure, wherein a positioning of the tips and dimensions of the conductive enclosure are configured in proportion to a selected wavelength to transmit a direct signal generated by the first dipole antenna and an indirect signal reflected by the conductive enclosure to provide a 2π steradian coverage area.
A method, comprising:
- identifying a selected wavelength at which a pair of perpendicularly-disposed dipole antennas will operate, wherein each antenna of the pair of perpendicularly-disposed dipole antennas has a same shape and includes conductors ending in tips;
- providing a conductive enclosure having a closed portion and an open portion;
- disposing the conductors of the pair of perpendicularly disposed dipole antennas to extend substantially along a central axis of the conductive enclosure from the closed portion of the conductive enclosure to a first distance beyond the open portion of the conductive enclosure;
- and
- disposing the tips of the pair of perpendicularly disposed dipole antennas to extend from the conductors at an acute angle between the tips and the central axis of the conductive enclosure.
Dependencies are inferred from the claim text.