An electromagnetic, EM, device, includes: a substrate having a dielectric layer and a first conductive layer at a first side of the substrate, the substrate having a via that extends at least partially through the substrate from the first side toward an opposing second side of the substrate; at least one dielectric structure having at least one non-gaseous dielectric material that forms a first dielectric portion that extends outward from the first side of the substrate, the first dielectric portion having a first average dielectric constant, the at least one dielectric structure further having a second dielectric portion that is contiguous with the first dielectric portion; wherein the second dielectric portion extends into the via of the substrate, the via having a mechanical interlock surface; and wherein the at least one dielectric structure includes a mechanical interlock between the second dielectric portion and the mechanical interlock surface of the via of the substrate.

An antenna device is provided. The antenna device includes an antenna body portion configured to transmit and/or receive a radio frequency (RF) signal, and including a dielectric material having a first dielectric constant; a metal layer configured to contact the antenna body portion; a first insulation layer configured to cover at least a part of the metal layer; and an electrical connection structure configured to be electrically connected to the metal layer, wherein the first dielectric constant of the antenna body portion is larger than a dielectric constant of the first insulation layer, and is smaller than a dielectric constant of the metal layer.

An antenna device includes a dielectric resonator antenna configured to transmit and/or receive a first RF signal, a patch antenna pattern configured to transmit and/or receive a second RF signal, and at least partially overlaps the dielectric resonator antenna in a vertical direction, a first feed via configured to feed to the dielectric resonator antenna, and a second feed via configured to feed to the patch antenna pattern, wherein a frequency of the first RF signal is lower than a frequency of the second RF signal.

Disclosed is a sensing system to evaluate and monitor the status of a material forming part of a refractory furnace, integrating an antenna and a grating structure that might be part of the furnace. The system is operative to identify flaws and measure the erosion profile and thickness of different materials, including refractory materials of an industrial furnace, using radiofrequency signals. The system is designed to integrate the antenna with a grating adjacent to an external furnace wall to improve the overall performance of the sensing system as compared to that of the antenna alone during an inspection of the furnace, even in regions of difficult access. Furthermore, the system comprises a mechanism to physically attach the antenna to the furnace grating or to modify the grating configuration around the antenna to improve the system performance for better estimating the remaining operational life and maintenance plan of the furnace.

The present disclosure provides a terahertz (THz) transceiver including a triple-barrier resonant tunneling diode (TBRTD), a resonator antenna electrically connected to an emitter and a collector of the TBRTD, and a radiator antenna disposed over the resonator antenna and vertically aligned with the resonator antenna for reducing a system size. A corresponding method of fabricating the THz transceiver is also provided.

An electronic device may be provided with a phased antenna array and a display cover layer. The phased antenna array may include a probe-fed dielectric resonator antenna. The antenna may include a dielectric resonating element mounted to a flexible printed circuit. A feed probe may be formed from a patch of conductive traces on a sidewall of the resonating element. The feed probe may excite resonant modes of the resonating element. The resonating element may convey corresponding radio-frequency signals through the display cover layer. An additional feed probe may be mounted to an orthogonal sidewall of the resonating element for covering additional polarizations. Probe-fed dielectric resonator antennas for covering different polarizations and frequencies may be interleaved across the phased antenna array.

An antenna that comprises a dielectric body and a feed arrangement. The dielectric body includes a first portion operable as a dielectric lens and a second portion operable as a dielectric resonator. The feed arrangement is operably coupled with the dielectric body for operating the antenna as a dielectric lens antenna and a dielectric resonator antenna.

An electronic device may be provided with an antenna module having a substrate. A phased antenna array of dielectric resonator antennas and a radio-frequency integrated circuit for the array may be mounted to one or more surfaces of the substrate. The dielectric resonator antennas may include dielectric columns excited by feed probes. The feed probes may be printed onto sidewalls of the dielectric columns or may be pressed against the sidewalls by biasing structures. A plastic substrate may be molded over each dielectric column and each of the feed probes in the array. The feed probes may cover multiple polarizations. The array may include elements for covering multiple frequency bands. The dielectric columns may be aligned a longitudinal axis and may be rotated at a non-zero and non-perpendicular angle with respect to the longitudinal axis.

This application provides an antenna assembly, including two antenna boards that are placed in a stacked manner. Polarization manners of the two antenna boards are perpendicular to each other, and the two antenna boards are configured to separate a received electromagnetic wave into a horizontal polarization component and a vertical polarization component. A bias voltage is applied to a liquid crystal dielectric layer in the two antenna boards to change ratios of reflection power to transmission power of the two antenna boards, to change a ratio of reflection power of the two polarization components that are obtained through separation, and implement linear polarization at different angles after vector synthesis is performed on the two polarization components. In this way, receive power of an antenna is increased.

The present disclosure relates to a ceramic waveguide filter for an antenna, which, in particular, includes a housing including a plurality of resonance blocks which are prepared from a dielectric having a predetermined dielectric constant, and some of which are partitioned by an inner partition wall; a plurality of resonators, each resonator being caused to serve as a single resonator by a plurality of resonator posts respectively provided in the plurality of resonance blocks included in the housing; and an input porthole to which an input port is connected to input a signal to any one of the plurality of resonators, and an output porthole to which an output port is connected to output a signal from any one of the plurality of resonators, Since either the input porthole or the output porthole is provided with a notch structure bar integrally formed in the housing, which extends towards the resonator post skipping from the adjacent resonator post among the plurality of resonator posts, advantageously the notch design of the passband can be performed with easy.