US 10,431,893 B1Granted

Omnidirectional multiband antenna

AssigneeKing Saud University

InventorsWaleed Tariq Sethi, Khaled Issa, Muhammad Ahmed Ashraf, Habib Fathallah, Saleh Alshebeili

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Abstract

The omnidirectional multiband antenna is a variant on a monocone antenna, particularly including a corrugated extending surface for lowering the low frequency cutoff of the monocone antenna. The omnidirectional multiband antenna includes an electrically conductive conical surface, having a vertex end and a base end, and at least one electrically conductive annular member mounted on the base end. The at least one electrically conductive annular member is formed from a plurality of stacked segments and has a corrugated exterior surface. The vertex end of the electrically conductive conical surface is positioned adjacent to, and spaced apart from, a first surface of a ground plane plate. A plurality of cylindrical rods is provided, a first end of each rod being secured to the at least one electrically conductive annular member, and a second end of each rod being mounted on the first surface of the ground plane plate.

Claims19

Dependent claims

An omnidirectional multiband antenna, comprising:

an electrically conductive conical surface having a vertex end and a base end;
at least one electrically conductive annular member mounted on the base end of the electrically conductive conical surface, the at least one electrically conductive annular member having a plurality of stacked segments and a corrugated exterior surface;
a ground plane plate having opposed first and second surfaces, the vertex end of the electrically conductive conical surface being positioned adjacent to, and spaced apart from, the first surface of the ground plane plate;
a plurality of cylindrical rods, each of the rods having opposed first and second ends, the first end of each of the rods being secured to the at least one electrically conductive annular member, the second end of each of the rods being mounted on the first surface of the ground plane plate;
and
a coaxial cable having a center conductor and an outer conductor, the center conductor being in electrical communication with the vertex end of the electrically conductive conical surface, and the outer conductor being in electrical communication with the ground plane plate.

3 more elements

An omnidirectional multiband antenna, comprising:

an electrically conductive conical surface having a vertex end and a base end;
at least one electrically conductive annular member mounted on the base end of the electrically conductive conical surface, the at least one electrically conductive annular member having a plurality of stacked segments and a corrugated exterior surface;
a ground plane plate having opposed first and second surfaces, the vertex end of the electrically conductive conical surface being positioned adjacent to, and spaced apart from, the first surface of the ground plane plate;
a plurality of cylindrical rods, each having opposed first and second ends, the first end of each of the rods being secured to the at least one electrically conductive annular member, the second end of each of the rods being mounted on the first surface of the ground plane plate;
a coaxial cable having a center conductor and an outer conductor, the center conductor being in electrical communication with the vertex end of the electrically conductive conical surface, and the outer conductor being in electrical communication with the ground plane plate;
and
a cable fixing member having a hollow tubular portion and an annular flange, the second surface of the ground plane plate having a recess formed therein for receiving the annular flange of the cable fixing member.

4 more elements

Dependencies are inferred from the claim text.