Broadband/multi-band circular array antenna
AssigneeWang Electro-Opto Corporation
InventorJohnson J. H. Wang
Life of this patent
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Abstract
A broadband/multiband circular array antenna is disclosed. One embodiment comprises a circular directional array antenna comprising a driven omnidirectional traveling-wave antenna element coupled to a transceiver via a feed and a plurality of surface-waveguide elements symmetrically positioned about and spaced from the driven omnidirectional traveling-wave antenna element. Each surface-waveguide element receives a control signal configured to selectively alter its waveguide characteristics to electronically direct a beam to/from the array. The array provides a directionally controllable antenna beam with broadband/multiband frequency performance in a low profile design that is both economical and practical to produce and maintain.
Claims14
A circular directional array antenna comprising:
- a driven omnidirectional traveling-wave antenna element coupled to a transceiver via a feed network;
- and
- a plurality of surface-waveguide elements symmetrically positioned about and concentrically spaced from the driven omnidirectional traveling-wave antenna element, each surface-waveguide element configured to receive a control signal configured to alter a surface-waveguide transmission characteristic.
A method for operating a broadband/multiband beam-steered circular array antenna, comprising:
- locating a driven broadband/multiband traveling wave antenna element that generates an omnidirectional electromagnetic radiation pattern on a ground plane;
- concentrically arranging a plurality of broadband/multiband surface-waveguide elements around the driven omnidirectional traveling-wave antenna;
- and
- applying control signals configured to steer the electromagnetic radiation by selectively altering waveguide characteristics of respective surface-waveguide elements that receive the control signals.
Dependencies are inferred from the claim text.