Dipole for hemispherical coverage antenna

Details Dipole for hemispherical coverage antenna Dipole for hemispherical coverage antenna

2008-12-17

2011-10-18

Dinh, Trinh (Department: 2821)

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

C343S793000, C343S799000, C343S780000, C343S810000

Reexamination Certificate

active

08040288

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.

REFERENCES:
patent: 3740754 (1973-06-01), Epis
patent: 3896450 (1975-07-01), Fitzroy et al.
patent: 3919710 (1975-11-01), Fletcher et al.
patent: 3922683 (1975-11-01), Kumpebeck
patent: 6271800 (2001-08-01), Nakamura et al.
patent: 7439927 (2008-10-01), Lenart et al.
patent: 7839351 (2010-11-01), Schadler et al.

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