An electronic device may be provided with a phased antenna array that includes a dielectric resonator antenna having a dielectric column mounted to a circuit board. The dielectric column may be embedded in a dielectric substrate such as a plastic overmold. Conductive walls may be disposed on the dielectric substrate and may laterally surround the dielectric substrate and one or more dielectric resonating elements in the phased antenna array. The conductive walls may be grounded. The conductive walls may have a tapered shape. The conductive walls may help to isolate the antenna from electromagnetic influences from nearby conductive components in the electronic device. The conductive walls may form a conductive horn that helps to maximize the gain of the antenna in conveying radio-frequency signals greater than 10 GHz through a display cover layer, housing window, camera sapphire, or rear housing wall.

An antenna structure according to an embodiment includes a radiator including a plurality of radiating portions that have sequentially reducing widths, a transmission line electrically connected to the radiator, and a ground pattern around the transmission line to be physically spaced apart from the radiator and the transmission line. A broadband antenna structure capable of providing a multi-band radiation can be implemented.

An electronic device may be provided with a phased antenna array and a display cover layer. The phased antenna array may include a dielectric resonator antenna. The dielectric resonator antenna may include a dielectric resonating element embedded in a lower permittivity dielectric substrate. The substrate and the resonating element may be mounted to a flexible printed circuit. A slot may be formed in ground traces on the flexible printed circuit and aligned with the resonating element. The slot may excite resonant modes of the resonating element. The resonating element may convey corresponding radio-frequency signals through the cover layer. A dielectric matching layer may be interposed between the resonating element and the cover layer. If desired, the slot may radiate additional radio-frequency signals and the matching layer may have a tapered shape. Dielectric resonator antennas for covering different polarizations and frequencies may be interleaved across the array.

The present disclosure relates to a phase shifter assembly comprising a phase shift circuit and a dielectric assembly having at least one dielectric element movable relative to the phase shift circuit for phase shifting, wherein the at least one dielectric element is disposed at a set distance from the phase shift circuit to form a gap between the at least one dielectric element and the phase shift circuit. In addition, the present disclosure also relates to a cavity phase shifter and a base station antenna.

An antenna includes antenna elements provided one by one on the respective sides of a substantially rectangular conductor plate. Each of the antenna elements includes a feeding wire and a split ring conductor having a shape in which a ring is partially cut by a split part. The feeding wire is electrically connected to the split ring conductor and extends in a direction across a region formed inside the split ring conductor. Two antenna elements provided on two arbitrary sides facing each other of the conductor plate among the four antenna elements are each supplied with power through the feeding wire included in each antenna element so as to have substantially the same direction of an electric field in a polarization direction.

An RF charging system for implantable medical devices. The RF charging system includes a radio frequency (RF) signal, a first antenna configured to transmit the RF signal, a second antenna configured to receive the RF signal transmitted by the first antenna, tune characteristics of the RF signal, and improve power transfer with impedance matching circuitry, an RF to direct current (DC) converter configured to convert the RF signal of the second antenna into a DC signal, and a battery management circuit configured to receive the DC signal and provide voltage to a battery.

A method of making a dielectric, Dk, electromagnetic, EM, structure, includes: providing a first mold portion comprising substantially identical ones of a first plurality of recesses arranged in an array; filling the first plurality of recesses with a curable first Dk composition having a first average dielectric constant greater than that of air after full cure; placing a substrate on top of and across multiple ones of the first plurality of recesses filled with the first Dk composition, and at least partially curing the curable first Dk composition; and, removing the substrate with the at least partially cured first Dk composition from the first mold portion, resulting in an assembly having the substrate and a plurality of Dk forms including the at least partially cured first Dk composition, each of the plurality of Dk forms having a three dimensional, 3D, shape defined by corresponding ones of the first plurality of recesses.

In accordance with one or more embodiments, a method includes injection molding of a dielectric material in a pre-distorted antenna mold; and curing the dielectric material. The pre-distorted dielectric mold has a shape that compensates for shape distortion of the dielectric material during the curing.

Aspects of the subject disclosure may include, for example, a system for transmitting signals by first electromagnetic waves guided by a first transmission medium, and, responsive to a determination of an undesired condition, adjusting the first electromagnetic waves to cause cross-medium coupling between the first transmission medium and a second transmission medium resulting in the signals being transmitted by second electromagnetic waves guided by the second transmission medium. Other embodiments are disclosed.

This application provides an antenna system and a wireless device, and pertains to the field of communications technologies. In this application, a decoupling resonator is connected to a first antenna, and a resonance frequency of the decoupling resonator is within an operating frequency band of a second antenna, so that the decoupling resonator can resonate within the operating frequency band of the second antenna. The decoupling resonator reduces coupling between the first antenna and the second antenna, and isolation between the first antenna and the second antenna is improved.