Waveguide with radiation slots and parasitic elements for asymmetrical coverage
AssigneeAptiv Technologies AG
InventorMingjian Li
Life of this patent
Estimating the term…
Abstract
This document describes a waveguide with radiation slots and parasitic elements for asymmetrical coverage. An apparatus may include a waveguide for providing asymmetrical coverage in an azimuth plane. The waveguide includes a hollow channel containing a dielectric and an array of radiation slots through a surface that is operably connected with the dielectric. The waveguide includes an array of parasitic elements positioned on or in the surface and offset from a longitudinal side of the array of radiation slots. The radiation slots and parasitic elements configure the described waveguide to focus an antenna radiation pattern that provides an asymmetrical coverage to focus on a particular portion within the antenna field-of-view.
Claims19
An apparatus comprising:
- a waveguide including a hollow channel for a dielectric, the waveguide including:
- a plurality of radiation slots, each of the plurality of radiation slots comprising an opening through a first layer that defines a surface of the hollow channel, each of the plurality of radiation slots being operably connected with the dielectric;
- and
- a plurality of parasitic cavity elements each being a recess or cavity forming a depression within the surface of the first layer, the plurality of parasitic cavity elements each being positioned adjacent to and offset along the surface from a same longitudinal side of each radiation slot of the plurality of radiation slots such that each of the plurality of parasitic cavity elements overlaps a different and single one of the plurality of radiation slots in a direction perpendicular to a longitudinal direction through the hollow channel, the longitudinal side being parallel with the longitudinal direction through the hollow channel, the plurality of parasitic cavity elements and the plurality of radiation slots being arranged to produce an asymmetrical radiation pattern.
A system comprising:
- an antenna element;
- a device configured to transmit or receive electromagnetic signals via the antenna element;
- and
- a waveguide including a hollow channel for a dielectric, the waveguide including:
- a plurality of radiation slots, each of the plurality of radiation slots comprising an opening through a first layer that defines a surface of the hollow channel, each of the plurality of radiation slots being operably connected with the dielectric;
- and
- a plurality of parasitic cavity elements each being a recess or cavity forming a depression within the surface of the first layer, the plurality of parasitic cavity elements each being positioned adjacent to and offset along the surface from a same longitudinal side of each radiation slot of the plurality of radiation slots such that each of the plurality of parasitic cavity elements overlaps a different and single one of the plurality of radiation slots in a direction perpendicular to a longitudinal direction through the hollow channel, the longitudinal side being parallel with the longitudinal direction through the hollow channel, the plurality of parasitic cavity elements and the plurality of radiation slots being arranged to produce an asymmetrical radiation pattern.
Dependencies are inferred from the claim text.