Various embodiments relate to an electronic device that supports millimeter wave communication. The electronic device may include: a housing; an antenna structure including at least one antenna comprising a portion of the housing or positioned in the housing, and including an annular conductive structure comprising a conductive material, the annular conductive structure having a first surface facing an outside of the housing, a second surface facing a direction opposite the first surface, an internal space defined by the first surface and the second surface, and a plurality of slots having a repeating pattern and formed through the first surface to the internal space; a conductive member comprising a conductive material disposed in the internal space; a wireless communication circuit electrically connected with the conductive member and configured to form a directional beam using the antenna structure; and a ground electrically connected to the annular conductive structure.

Antenna and/or waveguide assemblies for vehicles, such as RADAR sensor antenna assemblies, along with associated signal confinement structures. In some embodiments, the assembly may comprise an antenna block defining one or more waveguides. A conductive layer may be coupled to the antenna block to form, at least in part, a wall of the waveguide. The assembly may comprise one or more periodic structures that may be operably coupled to the waveguide, each of which may comprise a first elongated opening and a first series of repeated slots extending at least substantially transverse to the first elongated opening, wherein each of the first series of repeated slots is spaced apart from an adjacent slot in the first series of repeated slots along the first elongated opening.

A fill level measuring device for measuring the fill level of a liquid in a tank of a vehicle includes a multiband slotted waveguide antenna to be attached in the upper region of the tank, the antenna having a waveguide and multiple slots spaced apart, which are dimensioned differently, so that they have different resonance frequencies, to respectively emit radar waves having different frequencies. At least one radar transmitter can be coupled to the waveguide to feed the multiband slotted waveguide antenna with radar waves having the different resonance frequencies, and at least one radar receiver is provided for receiving reflected radar waves of different frequencies via the multiband slotted waveguide antenna. An evaluation unit is provided for detecting the fill level and the spatial distribution of the liquid in the tank based on the reflected radar waves.

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.

A transceiver includes first electrical channels and second electrical channels. The first electrical channels are configured to transfer electromagnetic signals to first air waveguides. Each of the first electrical channels extend from a transmitter along an exterior surface of a chip package that supports the transmitter and terminate at first transitions on the exterior surface. Each of the first plurality of air waveguides are attached to the exterior surface and overlay one of the first transitions. The transceiver also includes second electrical channels configured to transfer second electromagnetic signals from second air waveguides. Each of the second electrical channels extend from a receiver along the exterior surface of the chip package that supports the receiver and terminate at second transitions on the exterior surface. Each of the second air waveguides are attached to the exterior surface and overlay one of the second transitions.

According to an embodiment, an antenna includes a conductive antenna element, a voltage-bias conductor, and a polarization-compensation conductor. The conductive antenna element is configured to radiate a first signal having a first polarization, and the voltage-bias conductor is coupled to a side of the antenna element and is configured to radiate a second signal having a second polarization that is different from the first polarization. And the polarization-compensating conductor is coupled to an opposite side of the antenna element and is configured to radiate third a signal having a third polarization that is approximately the same as the second polarization and that destructively interferes with the second signal. Such an antenna can be configured to reduce cross-polarization of the signals that its antenna elements radiate.

An apparatus and method for orthogonal rotation of a radiation E-field polarization rely on a radiating element including an offset-ridge waveguide and a single-mode first ridge waveguide functionally adjacent to the offset-ridge waveguide.

A waveguide slot antenna includes a waveguide having a plurality of slots spaced apart by a predefined distance in a central-axis direction of the waveguide, as a radiating section. An uneven section provided on an outer wall surface around the radiating section has a periodic concave-convex pattern extending from the radiating section. The uneven section includes a plurality of protrusions spaced apart by a predefined distance in a dispersed manner in each of an axis direction parallel to the central-axis of the waveguide in which the plurality of slots are arranged and an axis direction orthogonal to the central-axis of the waveguide, and grooves between the protrusions. The plurality of protrusions and the grooves causes incident waves incident from forward in a direction of radiation of radio waves emitted from the radiating section to be reflected in a direction different from an incident direction of the incident waves.

A vehicle and vehicle wiper with antenna is directed to improve communication stability with other target vehicles by securing sufficient signal reception sensitivity of an antenna of a vehicle even in rainy weather where the signal reception sensitivity of the antenna may decrease, while at the same time supplementing shortcomings of a short communication distance. A vehicle includes a wiper including a blade for wiping a windshield of the vehicle and an arm for supporting the blade, and a first antenna provided on the arm of the wiper.

This document describes a single-layer air waveguide antenna integrated on a circuit board. The waveguide guides electromagnetic energy through channels filled with air. It is formed from a single layer of material, such as a sheet of metal, metal-coated plastic, or other material with conductive surfaces that is attached to a circuit board. A portion of a surface of the circuit board is configured as a floor of the channels filled with air. This floor is an electrical interface between the circuit board and the channels filled with air. The single layer of material is positioned atop this electrical interface to define walls and a ceiling of the channels filled with air. The single layer of material can be secured to the circuit board in various ways. The cost of integrating an air waveguide antenna on to a circuit board this way may be less expensive than other waveguide-manufacturing techniques.