An electronic device may have a first conductive sidewall at an upper end, a second conductive sidewall at a lower end, and a conductive rear wall. First and second antennas may be formed at the upper end and may include slots with edges defined by the first sidewall and the rear wall. Third, fourth, fifth, and sixth antennas may be formed at the lower end and may include slots with edges defined by the second sidewall and the rear wall. Each antenna may cover multiple frequency bands. First order and third order modes of the slots may contribute to the frequency responses of the third through sixth antennas. A display controller may be mounted at the lower end and may impose a lower limit on the frequencies covered by the third through sixth antennas. The first and second antennas may cover lower frequencies than the third through sixth antennas.

A radio communication apparatus includes an RF circuit formed on one surface of a printed board and configured to generate an RF signal, a transmission line configured to transmit the RF signal, a transmission line configured to transmit a signal different from the RF signal, a ground layer formed on another surface of the printed board, an antenna element configured to emit the RF signal supplied from the RF circuit through the transmission line, and a connection layer configured to bond together the antenna element and the ground layer. The antenna element includes a plurality of layered dielectric substrates, a metal film formed on surfaces of them, and a through hole formed to penetrate the dielectric substrate closest to the printed board. A part of the transmission line is disposed between any of the plurality of layered dielectric substrates.

Antenna assemblies for vehicles, such as RADAR sensor antenna assemblies. In some embodiments, the assembly may comprise an antenna block defining an array of waveguide grooves on a first side of the antenna block. A slotted layer comprising a plurality of slots may be coupled with the antenna block with the slots at least partially aligned with the waveguide grooves of the antenna block. An adhesive layer may be positioned in between the antenna block and the slotted layer.

Antenna assemblies, such as RADAR or other sensor antenna assemblies for vehicles. In some embodiments, the assembly may comprise an antenna block defining a waveguide groove on a first side of the antenna block with opposing rows of posts positioned opposite from one another. A plurality of antenna slots may be positioned in the waveguide groove and may extend from the first side of the antenna block to a second side of the antenna block opposite the first side. A PCB or other means for generating electromagnetic energy may be coupled with the antenna block and be configured to feed the waveguide groove with an EM signal. The plurality of antenna slots formed in the antenna block may be configured to radiate electromagnetic energy from the antenna block.

A microstrip to waveguide transition comprising a waveguide module and a section of printed circuit board (PCB). The waveguide module comprises a waveguide aperture and a repetitive structure, the waveguide aperture being arranged extending through the module for attaching a waveguide to an external side of the module, the repetitive structure comprising a plurality of protruding elements arranged to surround the waveguide aperture on an internal side of the module and to define a passage into the waveguide aperture on the internal side, wherein the repetitive structure is configured to attenuate electromagnetic signal propagation in a frequency band past the repetitive structure while allowing propagation via the passage, the transition further comprising a PCB with a patch antenna connected to a transmission line and arranged to face the passage into the waveguide aperture.

A filter arrangement having three or more stacked metallization layers separated by printed circuit board, PCB, layers. Each metallization layer includes an aperture. The filter arrangement has a plurality of via-holes extending though the stacked metallization layers and through the separating Dielectric material layers, whereby the via-holes and the metallization layers delimit a cavity in each Dielectric material layer. The cavities in two consecutive Dielectric material layers being coupled by the aperture in the single metallization layer separating the two consecutive Dielectric material layers. The aperture of a topmost metallization layer being arranged as antenna element. The filter arrangement having a signal interface arranged as a conduit connecting at least one dielectric material layer to an exterior of the filter arrangement.

An illustrative example antenna device includes a substrate. A plurality of conductive members in the substrate establish a substrate integrated waveguide. A plurality of first and second slots are on an exterior surface of a first portion of the substrate. Each of the second slots is associated with a respective one of the first slots. The first and second slots are configured to establish a radiation pattern that varies across a beam of radiation emitted by the antenna device. A plurality of parasitic interruptions include slots on the exterior surface of a second portion of the substrate. The parasitic interruptions reduce ripple effects otherwise introduced by adjacent antennas.

A printed circuit board is provided, comprising a horizontally extending dielectric substrate and a substrate integrated waveguide (SIW). The SIW comprises two horizontally disposed conductive ground planes spaced by a vertical distance, and two vertically disposed conductive fences spanning therebetween. The fences extend in a first horizontal direction, and are spaced from one another in a second horizontal direction, perpendicular to the first horizontal direction. A space defined between the ground planes and the fences comprises material of the substrate formed with one or more channels being free of material of the substrate and extending in the first horizontal direction. Each of the channels is formed by a plurality of vertical cylindrical cavities, and each cavity horizontally overlaps one or more adjacent cavities.

This document includes techniques, apparatuses, and systems related to a waveguide with squint alteration, which can improve electromagnetic wave operation. In aspects, squint of electromagnetic waves pertaining to waveguides may be altered and improved. In this example, the techniques also enable the waveguide to direct electromagnetic waves according to respective chambers and one or more apertures, improving the quality of signals transmitted and received. The chambers may be divided according to a divider extending toward an opening of the waveguide, directing electromagnetic waves between the opening and the one or more apertures.

Antenna array and phased array system including a first and second antenna group, wherein the first antenna group includes two or more first antennas, and the second antenna group includes two or more second antennas, where in a first plane the one or more first and second antennas point in the same direction, and in a second plane, perpendicular to the first plane the one or more first antennas of the first antenna group are squinted by orientation away from the one or more second antennas of the second antenna group.