A vehicular half loop antenna is provided that includes a ground section and a feed section. The ground section has a ground point that is configured to be electrically grounded. The feed section is configured to be electrically connected to the ground section. The feed section includes a first feed portion having a feed point that is configured to be electrically connected to an antenna feed, and a second feed portion connected to the first feed portion via a corner portion therebetween, with the corner portion being located farther from the ground point than the feed point and having a curved or tapered outer edge.

Waveguide and/or antenna structures for use in RADAR sensor assemblies and the like. In some embodiments, an antenna module may comprise a waveguide and an antenna structure, such as one or more slots/slits operably coupled with the waveguide groove. The antenna structure may be positioned and configured to deliver electromagnetic radiation from the waveguide therethrough. A plurality of tapering surfaces may be formed along the antenna structure. Each of the plurality of tapering surfaces may be formed so as to alternate between opposing sides of the antenna structure and be spaced apart from each adjacent tapering surface of the plurality of tapering surfaces.

A communications apparatus to be installed on high mast lighting systems or other vertical assets with significant above ground projections. The apparatus is designed to mount to existing light ring spokes or other existing mounting structures. The system is powered during nighttime hours by grid power and during daylight hours by internal battery storage. A uniquely-oriented directional dual polarity MIMO antenna adapted for high mast mounting supports communications with mobile vehicles using MIMO emissions in a North/South and East/West polarization. Mobile vehicle clients may then use dual polarized antennas including skyward-looking radiation patterns with major lobes that are oriented directly up towards the sky.

An onboard antenna module includes: a plate-shaped member that is fixed to a body of a vehicle and at least a portion of which is plate-shaped; and a plurality of antennas that are provided on the plate-shaped member, wherein a plurality of antennas included in the plurality of antennas provided on the plate-shaped member constitute a first diversity antenna configured to receive RF (Radio Frequency) signals in a first frequency band, and at least two antennas included in the plurality of antennas that constitute the first diversity antenna are respectively provided in two regions that are not adjacent to each other when a flat surface of the plate-shaped member is divided into quadrants around a center point of the flat surface.

An onboard antenna module includes: a plate-shaped member that is fixed to a body of a vehicle and at least a portion of which is plate-shaped; and a plurality of antennas that are provided on the plate-shaped member, wherein a plurality of antennas included in the plurality of antennas provided on the plate-shaped member constitute a first diversity antenna configured to receive RF (Radio Frequency) signals in a first frequency band, and at least two antennas included in the plurality of antennas that constitute the first diversity antenna are respectively provided in two regions that are not adjacent to each other when a flat surface of the plate-shaped member is divided into quadrants around a center point of the flat surface.

A roof antenna may include an upper case formed to be opened at a lower portion thereof and including a plurality of fusion bosses and a plurality of hooks at the lower portion, a lower case coupled to the plurality of fusion bosses and the plurality of hooks to shield the opened lower portion of the upper case and configured to be coupled to a roof of a vehicle, and a rubber pad mounted to a lower portion of the lower case to prevent exposure to the outside by the upper case and provided so that the lower case is configured to be water-tightly coupled to the roof of the vehicle.

A radar apparatus for a motor vehicle including a transceiver device configured to transmit radar radiation and to receive the radar radiation reflected from objects in an environment of the radar apparatus and to generate a measurement signal, and a protection device configured to protect the transceiver device from external influences. The thickness of the protective device is at least in sections less than 10% of a wavelength of the radar radiation passing through the protective device.

Provided is an antenna device with a simple configuration and in which it is possible to control the directivity in various directions. An antenna device according to the present invention is provided with: an array antenna that includes at least one antenna element disposed on a first surface of a substrate and that forms beams in respective directions having a plurality of angles including a first angle relative to the first surface of the substrate; and a side wall that is provided on at least a partial periphery of the at least one antenna element and that refracts, in a direction along the substrate, a first beam in the direction having the first angle.

The radar system includes a split-block assembly comprising a first portion and a second portion. The first portion and the second portion form a seam, where the first portion has a top side opposite the seam and the second portion has a bottom side opposite the seam. The system includes at least one port located on a bottom side of the second portion. Additionally, the system includes radiating elements located on the top side of the first portion, wherein the radiating elements are arranged in a plurality of arrays. Yet further, the system includes a set of waveguides in the split-block assembly configured to couple each array to at least one port. Furthermore, the split-block assembly is made from a polymer and where at least the set of waveguides, the at least one port, and the plurality of radiating elements include metal on a surface of the polymer.

The radar system includes a split-block assembly comprising a first portion and a second portion. The first portion and the second portion form a seam, where the first portion has a top side opposite the seam and the second portion has a bottom side opposite the seam. The system includes at least one port located on a bottom side of the second portion. Additionally, the system includes radiating elements located on the top side of the first portion, wherein the radiating elements are arranged in a plurality of arrays. Yet further, the system includes a set of waveguides in the split-block assembly configured to couple each array to at least one port. Furthermore, the split-block assembly is made from a polymer and where at least the set of waveguides, the at least one port, and the plurality of radiating elements include metal on a surface of the polymer.