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US 9,178,275 B2Granted
Planar antenna with cover
AssigneeVega Grieshaber Kh
InventorDaniel Schultheiss
Life of this patent
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Abstract
Provided is a planar antenna based system for use as a radar level meter, microwave barrier or other suitable system. The system includes a planar radiator element arranged on a substrate, and a cover plate element made from a dielectric to cover the planar radiator element. In one alternative embodiment, the cover plate includes a cavity proximate the planar radiator element, into which the microwaves generated by the planar radiator element can be coupled. In another alternative, the cover plate is provided in a surface-flush position against the substrate in the edge region of the cavity. These arrangements may be provided in a plurality so as to support an overall system containing multiple radiator elements.
Claims33
A planar antenna, comprising:
- a plurality of planar radiator elements arranged on a substrate;
- at least one cover plate made from a dielectric to cover the plurality of planar radiator elements;
- wherein said cover plate comprises a plurality of cavities in the region of the plurality of planar radiator elements, said plurality of cavities being arranged in accordance with the arrangement of the plurality of radiator elements forming a web-like structure;
- wherein said cavities enable a coupling of microwaves generated by the plurality of planar radiator elements;
- and
- wherein said cover plate is at least partially surface-flush on the substrate in at least one edge region of said cavities, thereby enabling support against pressure forces acting on said cover plate during a use thereof.
3 more elements
A planar antenna, comprising:
- at least one planar radiator element arranged on a substrate;
- at least one cover plate made from a dielectric to cover the at least one planar radiator element;
- said at least one cover plate further comprising at least one cavity in the region of the at least one planar radiator element, the at least one cavity being configured in accordance with the arrangement of the at least one planar radiator element;
- said at least one cavity enabling coupling of microwaves generated by the at least one planar radiator element;
- said at least one cover plate being at least partially surface-flush on the substrate in at least one edge region of said cavity, thereby enabling support against pressure forces acting on the cover plate during a use thereof;
- and
- said at least one cover plate having a thickness proximate the at least one cavity, in an orthogonal direction with respect to the substrate, that corresponds to half the wavelength or an integer multiple of half wavelength of the microwaves generated.
4 more elements
A planar antenna, comprising:
- at least one planar radiator element arranged on a substrate;
- at least one cover plate made from a dielectric to cover the at least one planar radiator element;
- said at least one cover plate further comprising a cavity in a region of the at least one planar radiator element;
- said cavity enabling coupling of a beam of microwaves generated by the at least one planar radiator element;
- said at least one cover plate being at least partially surface-flush on the substrate in at least one edge region of said cavity, thereby enabling support against pressure forces acting on the at least one cover plate during a use thereof;
- and
- said at least one cover plate having a dielectric arrangement in a region above the cavity operative to shape the beam of microwaves generated by the at least one planar radiator element.
4 more elements
A planar antenna, comprising:
- at least one planar radiator element arranged on a substrate;
- at least one cover plate made from a dielectric to cover the at least one planar radiator element;
- said at least one cover plate further comprising at least one cavity in the region of the at least one planar radiator element;
- said at least one cavity enabling coupling of microwaves generated by the at least one planar radiator element;
- said at least one cover plate being at least partially surface-flush on the substrate in at least one edge region of said cavity, thereby enabling support against pressure forces acting on the at least one cover plate during a use thereof;
- the at least one cover plate having a thickness proximate the cavity, in an orthogonal direction with respect to the substrate, that corresponds to half wavelength or an integer multiple of the half wavelength of the microwaves generated,
- said at least one planar radiator element being in a regular arrangement on the substrate, and
- said at least one cavity provided in the at least one cover plate being arranged in accordance with the arrangement of the radiator element to form a web like structure.
5 more elements
A planar antenna, comprising:
- at least one planar radiator element arranged on a substrate;
- at least one dielectric cover plate to cover the at least one planar radiator element;
- said at least one cover plate further comprising a cavity in the region of the at least one planar radiator element, the cavity being configured in accordance with the arrangement of the at least one planar radiator element;
- said cavity enabling coupling of microwaves generated by the at least one planar radiator element;
- said cover plate being at least partially surface-flush on the substrate in at least one edge region of said cavity, thereby enabling support against pressure forces acting on the at least one cover plate during a use thereof;
- the cover plate having a thickness proximate the cavity, in an orthogonal direction with respect to the substrate, corresponding to half wavelength or an integer multiple of the half wavelength of the microwaves generated;
- and
- the cavity being shaped as an antenna horn.
5 more elements
A planar antenna for a radar level meter or a microwave barrier, said antenna comprising:
- a regular arrangement of planar radiator elements provided on a substrate;
- and
- a cover plate made from a dielectric to cover the planar radiator elements;
- wherein the cover plate has a plurality of cavities in a region of the regular arrangement of planar radiator elements, into which microwaves generated by the planar radiator elements can be coupled,
- wherein the cover plate lies surface-flush against the substrate at least in the edge region of the cavities to provide support against pressure forces acting on the cover plate, and
- wherein the cavities provided in the cover plate are arranged in accordance with the regular arrangement of the radiator elements to form a web-like structure extending between the cavities.
3 more elements
Dependencies are inferred from the claim text.