An integrated base station antenna comprises a passive antenna that includes a front radome, a matching dielectric layer and a rear radome; and an active antenna mounted on the back of the passive antenna. A distance between the rear radome of the passive antenna and the matching dielectric layer is a first distance, and the distance between the active antenna and the rear radome of the passive antenna is a second distance, where the first distance is selected as 0.25+n/2 times the equivalent wavelength, where n is a positive integer, and the second distance is selected as 0.25+N/2 times the equivalent wavelength, where N is a natural number. The equivalent wavelength is within the range of 0.8 to 1.2 times of the wavelength corresponding to a center frequency of an operating frequency band of the radiating elements in the active antenna.

An antenna device includes a wireless module, a module substrate, and a metal plate. The wireless module includes an antenna element that operates in a millimeter wave band. The module substrate is a multi-layer wiring module substrate on which the wireless module is mounted. The metal plate has a length of 1/10 or more of an operation wavelength and is positioned in a vertical direction relative to a plane surface of the antenna element and in a predetermined distance from the antenna element.

An antenna module includes two antennas, a reflecting board, and a plurality of extending plates. The extending plate has a first surface and a second surface. The first surface extends along a first axis and a second axis perpendicular to the first axis. The two antennas are disposed on the first surface and spaced along the first axis. A spacing zone is defined in the reflecting board and located between the two antennas along the first axis. The spacing zone has a shielding portion. A periphery of the shielding portion has a plurality of open grooves. Each open groove penetrates through the first surface and the second surface. The shielding portion has a plurality of side edges, wherein each side edge is adjacent to each open groove. Each extending plate extends towards the second surface. The shielding portion and the extending plates jointly form a shielding cover.

The present disclosure relates to antennas, communication devices, and communication systems. One example antenna includes a plurality of coupled resonators. The plurality of resonators are disposed on a side of a reflection plate. The plurality of resonators may have symmetry, and a first resonator in the plurality of resonators includes a plurality of portions with different extension directions.

Examples disclosed herein relate to a meta-structure based reflectarray for beamforming wireless applications and a method of operation of passive reflectarrays in an indoor environment. The method includes receiving, by a plurality of passive reflectarrays, a Radio Frequency (RF) signal from a source. The method also includes reflecting, by the plurality of passive reflectarrays, the RF signal to generate a plurality of RF beams to a respective target coverage area, in which each of the plurality of RF beams increases a multipath gain along a signal path between a corresponding passive reflectarray to the respective target coverage area.

Low-profile radar reflectors are provided for reradiating when illuminated by a vertically-polarized incident wave generated by an automotive radar. One example reflector includes a ground plane, a substrate having a top surface and a bottom surface, and radiating elements positioned on the substrate. Each radiating element includes opposing vertical metallic side segments connected to the ground plane, and a horizontal metallic segment extending between the opposing vertical metallic side segments and along the top surface of the substrate. The horizontal metallic segment of each radiating element has a defined length such that, when the radiating element is illuminated by a vertically-polarized incident wave from an automotive radar, each radiating element is at its resonance causing currents in the opposing vertical metallic side segments to flow in the same direction and reradiates back to the automotive radar. Other example low-profile reflectors and methods of fabricating low-profile reflectors are also disclosed.

UE positioning is added by use of a reconfigurable reflecting surface (e.g., IRS). The IRS is configured to adjust elements of the surface. The configuration may include signal switching on or off, signal phase, group delay, or signal amplitude. Positioning reference signal transmissions are performed that have line of sight to the UE and that reflect off the IRS. The UE takes measurements for the transmissions and can determine measurement(s) of angle of arrival or time of arrival or reference signal received power, and/or determine a channel estimation. Multiple methods are proposed to provide UE positioning.

Radio frequency (RF) feed networks are provided. An RF feed network includes a plurality of impedance-matching paths that have different impedances. respectively. The impedance-matching paths are coupled between arrays of a base station antenna and an input of the RF feed network. Related methods of operating a base station antenna are also provided.

A system including a plurality of circuits in a first radio frequency (RF) device which are configured to control a plurality of reflector devices based on a set of criteria. The controlled plurality of reflector devices transmit a plurality of RF signals in a specified direction and a specified location of a second RF device within transmission range of the controlled plurality of reflector devices. The plurality of RF signals are transmitted in the specified direction and the specified location of a second RF device based on a request for signal cancellation. The request for the signal cancellation is based on a noise from the second RF device and the plurality of RF signals are cancelled in the specified direction and the specified location of the second RF device.

A base station antenna comprises a reflector; a phase shifter that includes a phase shifter printed circuit board; and a radiating element that includes at least one feed stalk and a radiator mounted on the feed stalk forwardly of the reflector. The feed stalk is mounted directly on the phase shifter printed circuit board.