Antenna and method of manufacture thereof
AssigneeLeonardo Mw Ltd
InventorBrian SCANNELL
Life of this patent
Estimating the term…
Abstract
There is described a dielectric polariser for a bicone antenna. The polariser can include radiating vanes that are spaced circumferentially around an aperture of the bicone antenna. The vanes are orientated at 45° to the polarised waves propagated from the antenna in order to circularly polarise the linearly polarised waves. The polariser can be configured for manufacture using a 3D printing process. Surfaces of a central hub of the polariser can be metallised to provide the radiating surfaces of the antenna. This removes the need to use separate antenna elements. Alternative arrangements of 3D printed dielectric polariser are disclosed for use with antenna horns.
Claims38
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A polariser for a bicone antenna, the polariser comprising:
- a polarizer configuration to extend circumferentially around a bicone antenna;
- and
- vanes arranged to extend radially away from the bicone antenna, the vanes being oriented obliquely to a linearly polarised electrical field when propagated from the bicone antenna so as to convert electromagnetic waves to or towards circular polarisation;
- wherein the polariser is a single integral piece that defines, at least in part, the vanes.
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An antenna comprising:
- a polarizer;
- and
- the antenna being formed of a 3D printable plastics material, the plastics material having one or more metallised surfaces.
A method of manufacture of an antenna having a polariser, the method comprising:
- forming a polariser from plastics material via a 3D printing process;
- and
- directly metallising the plastics material of the polariser.
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A bicone antenna comprising:
- two radiating surfaces;
- and
- four feeds, each of the four feeds being electrically connected to the two radiating surfaces.
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Dependencies are inferred from the claim text.