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US 5,691,734 AGranted
Dual polarizating antennae
AssigneeAlan Dick & Company Limited
InventorRichard Simon Greville Davies
Life of this patent
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AssigneeAlan Dick & Company Limited
InventorRichard Simon Greville Davies
Estimating the term…
A dual polarization antenna includes a non-conducting space surrounded by a ground plane. Two angularly offset sets of dipole structures penetrate into the space. Each set of dipole structures comprises a pair of aligned short circuit elongate dipoles extending from the ground plane into the space from diametrically opposed directions and terminating in respective free ends. The free ends are adjacent, but spaced from each other, to define a gap between them. At least one separate device is provided for exciting each set of dipole structures or each dipole structure within a set individually. A radiating element is provided overlying the dipole structures such that the dipole structures couple, in use, with the radiating element, causing the radiating element to radiate polarizations determined by the orientation of each of the sets of dipole structures.
A dual polarization antenna including a non-conducting space surrounded by a ground plane;
A dual polarization antenna including a non-conducting space surrounded by a ground plane, two angularly offset sets of dipole structures overlying the space, each set having an orientation and comprising a pair of aligned short-circuit elongate dipoles extending from the ground plane over the space from diametrically opposed directions to terminate in free ends adjacent but spaced from each other to define a gap between said free ends, and separate means for exciting each set, or dipole structure within a set, individually.
A dual polarization antenna including a non-conducting space surrounded by a ground plane, two angularly offset sets of dipole structures penetrating into the space, each set comprising a pair of aligned dipole structures extending into the space from diametrically opposed directions and terminating in free ends, each dipole structure of said sets of dipole structures comprising a conducting element extending from the ground plane to a respective free end, and a pair of parallel open-circuit dipoles extending from the free end back along respective sides of the conducting element, the free ends being adjacent but spaced from each other to define a gap between said free ends, and separate means for exciting each set, or dipole structure within a set, individually.
Dependencies are inferred from the claim text.