A compact radiofrequency driver includes at least one axial port intended to be connected to a radiating antenna, at least one output intended to collect received signals and at least one input intended to transmit signals, comprising first and second septum polarizers and a frequency filter, the second polarizer being connected, via its common port, to a first rectangular port of the first polarizer and the frequency filter being connected to the second rectangular port of the first polarizer and being configured to filter a reception or transmission frequency band, these two bands being different, and wherein at least one of the polarizers is configured to convert a circularly polarized signal received on said axial port of the driver into a linearly polarized signal in a reception frequency band and in that at least a second polarizer is configured to convert a linearly polarized signal transmitted to the driver by the input into a circularly polarized signal in a transmission frequency band.

The disclosure provides an integrated wave-absorbing and wave-transparent apparatus and a radome. The integrated wave-absorbing and wave-transparent apparatus includes: a wave-transparent structure, including a first substrate and a metal patch unit located on opposite surfaces of the substrate; and a wave-absorbing structure, disposed on the wave-transparent structure and including a first wave-absorbing unit and a second wave-absorbing unit that are perpendicular to each other, where the first wave-absorbing unit and the second wave-absorbing unit each includes: a second substrate; and a plurality of metal sections and a plurality of stop-bands that are located on surfaces of the second substrate, where the plurality of metal sections and the plurality of stop-bands are connected alternately to form an absorption ring, and the metal patch unit is configured to be perpendicular to each of an absorption ring of the first wave-absorbing unit and an absorption ring of the second wave-absorbing unit.

A wireless access system including a wireless transceiver configured to emit electromagnetic radiation and a wireless coverage control thin film. The wireless coverage control thin film includes a thin film and a plurality of conductive patterns on the thin film. The conductive patterns are configured to scatter the electromagnetic radiation emitted by the wireless transceiver.

A frequency selective surface (FSS) having periodicity between one eighth and one quarter of an operational wavelength of the FSS and a low profile. The FSS has multiple pattern elements which are used to produce multiple transmission poles, and in some embodiments multiple transmission zeros. The transmission poles and transmission zeros are in the Ka and Ku bands, making the FSS applicable to 5G application. The transmission poles and transmission zeros also have high angular stability an oblique incident angle as high as 60°, as well as polarization insensitivity.

A housing assembly, an antenna device, and an electronic device are provided. The housing assembly includes a dielectric substrate, a bearing layer, and a coupling structure. The dielectric substrate has a first transmittance to a radio frequency (RF) signal in a preset frequency band. The bearing layer is stacked with the dielectric substrate. The coupling structure is disposed at the bearing layer. An orthographic projection of the coupling structure on the dielectric substrate at least partially covers the dielectric substrate. The coupling structure includes one or more array layers of coupling elements. The one or more array layers having resonance characteristic s in the preset frequency band. The housing assembly has a second transmittance to the RF signal in the preset frequency band in a region corresponding to the coupling structure. The second transmittance is greater than the first transmittance.

A housing assembly, an antenna device, and an electronic device are provided. The housing assembly includes a dielectric substrate, an impedance matching layer, and a coupling structure. The dielectric substrate has a first transmittance to a radio frequency (RF) signal in a preset frequency band. The impedance matching layer is stacked with the dielectric substrate and is used for spatial impedance matching of the RF signal in the preset frequency band. The coupling structure is stacked with the dielectric substrate and includes one or more array layers of coupling elements, where the array layer has resonance characteristics in the preset frequency band. The housing assembly has a second transmittance to the RF signal in the preset frequency band in a region corresponding to the coupling structure, and the second transmittance is greater than the first transmittance.

An antenna configured to receive radiation at global navigation satellite system (GNSS) frequencies includes a substrate, a frontside patch arranged on a front side of the substrate, and a metamaterial ground plane. The metamaterial ground plane includes a plurality of backside patches and a cavity. The plurality of backside patches include a center backside patch surrounded in a radial direction by a plurality of intermediate backside patches. The center backside patch and the plurality of intermediate backside patches are arranged in a pattern that provides circular symmetry with respect to a center of the antenna. The cavity is coupled to the substrate, and the plurality of intermediate backside patches are electrically isolated from the cavity.

An electronic device may be provided with a display and a phased array antenna that transmits radio-frequency signals at frequencies greater than 10 GHz. The display may include a conductive layer that is used to form pixel circuitry and/or touch sensor electrodes. A filter may be formed from conductive structures within the conductive layer. The conductive structures may include an array of conductive patches separated by slots or may include conductive paths that define an array of slots. The filter may include an additional array of conductive patches stacked under the array of conductive patches to allow the slots to be narrower than would be resolvable to the unaided human eye. The periodicity of the conductive structures and the slots in the filter may be selected to tune a cutoff frequency of the filter to be greater than frequencies handled by the phased antenna array.

The disclosure discloses a controllable wave-absorbing metamaterial including a substrate and a metamaterial unit array layer. Each conductive geometric unit includes a first hollow structure, second hollow structures, and conductive geometric structures. The second hollow structures are respectively extended from four vertices of the first hollow structure, and the conductive geometric structure is disposed between each two adjacent second hollow structures. The first end of the second hollow structure is provided with a varactor diode connected to the conductive geometric structures at both sides, the second end of the second hollow structure is provided with a fixed capacitor and a fixed resistor; the fixed capacitor is connected to the conductive geometric structure at one side, and the fixed resistor is connected to the conductive geometric structure at the other side. Therefore, active adjustment on a wave-absorption frequency band can be implemented, and power consumption is very low.

An example of embodiments of the present disclosure includes a wireless communication bolt. The wireless communication bolt includes a bolt and a wireless communication module. The bolt includes a shaft part and a head part. The wireless communication module includes an antenna. The antenna includes a first conductor, a second conductor, a plurality of third conductors, a fourth conductor, and a feeding line. The second conductor faces the first conductor along a first axis. The plurality of third conductors are positioned between the first conductor and the second conductor. The plurality of third conductors extend along the first axis. The fourth conductor is connected to the first conductor and the second conductor. The fourth conductor extends along the first axis. The feeding line is electromagnetically connected to the third conductor. The fourth conductor faces the head part.