Base station antennas are provided herein. A base station antenna includes a plurality of vertical columns of low-band radiating elements configured to transmit RF signals in a first frequency band. The base station antenna also includes a plurality of vertical columns of high-band radiating elements configured to transmit RF signals in a second frequency band that is higher than the first frequency band. The vertical columns of high-band radiating elements extend in parallel with the vertical columns of low-band radiating elements in a vertical direction.

The present disclosure relates to a base station antenna. The base station antenna comprises: a reflector and radome supports mounted on the reflector, wherein the reflector comprises a body portion and a bent portion, the bent portion including at least a first section that is connected to and bent relative to the body portion of the reflector, wherein one or more arrays of radiating elements are mounted on or above the body portion of the reflector, wherein the radome support includes a support portion for supporting the radome and a mating portion for mating with the reflector, wherein a first support limiting portion is provided on the mating portion of the radome support, a first reflector limiting portion mating with the first support limiting portion is provided on the body portion of the reflector, and the first support limiting portion mates with the first reflector limiting portion to limit at least the position of the radome support in a width direction H. This enables the radome supports to be mounted on the reflector at an efficient and reliable manner.

An electronically scanned array is comprised of a plurality of radiating horns embedded in a nose cone. The radiating horns are configured as an electronically scanned array. The nose cone comprises a dielectric material with a known thickness in front of the radiating horn opening. Each radiating horn is driven by a phase shifter. The phase shifters are configured to produce a radiation pattern with attenuated side lobes.

A radome constructed from a plurality of interconnectable segments and a novel connector assembly for use in connecting together the radome segments.

The present disclosure reduces a loss of strength of a radio-frequency signal radiated from an antenna module covered with a housing. An antenna module (100) includes a dielectric substrate (130), a driven element (141), and a ground conductor (190). The dielectric substrate (130) has a multilayer structure. The driven element (141) is disposed in or on the dielectric substrate (130). The ground conductor (190) is disposed between the driven element (140) and a mounting surface (132) on which a power supply circuit is mountable. The power supply circuit supplies the driven element (140) with radio-frequency power. The dielectric substrate has at least one groove (150). The at least one groove (150) is separate from the driven element (140) when the antenna module (100) is viewed in plan. The at least one groove (150) extends toward the ground conductor (190) from a layer on which the driven element (140) is disposed.

Reconfigurable antenna systems integrated with a metal case are provided herein. In certain embodiments, user equipment (UE) for a cellular network includes a metal case and an antenna system for transmitting and/or receiving wireless signals. The antenna system includes an antenna element and a tuning conductor that is spaced apart from the antenna element and operable to load the antenna element. At least one of the antenna element or the tuning conductor is formed in the metal case. For example, a plasma process can be used to create transparent electromagnetic windows at a given frequency while shielding underlying components from spurious signals at other frequencies. Such plasma shielding processes can be used to turn conductive regions of the metal case into non-conductive metal oxide, thereby providing a mechanism for electrical isolation between various regions of the metal case.

Methods and apparatus for providing a wideband dual differential current loop radiator. In embodiments, a radiator includes first and second dipole pairs with first and second differential conductor pairs providing differential signals to the first and second dipole arms. The radiator may include a cavity, which can be filed with air, in at least a portion of a feed layer. The dipoles may have a coincident phase center.

A waveguide polarizer for converting between a linearly polarized electromagnetic field in a first waveguide and a circularly polarized electromagnetic field in a second waveguide is provided. The waveguide polarizer includes a structure interconnecting the first and second waveguide which includes a waveguide excitation arrangement with a bifilar helical shape. A circularly polarized antenna arranged to be connected to the first waveguide of the waveguide polarizer and a satellite arrangement are also provided.

A three-dimensional, 360 degree, omnidirectional multiple-input multiple-output wireless systems is described herein. The multiple-input multiple-output wireless system is comprised of a plurality of radio inputs, a plurality of radio-frequency converters, an RF signal distribution network, a plurality of transceivers, and a plurality of antennas. The multiple-input multiple-output wireless system may further have a plurality of planar stacks.

In one example, a base cover for a lower housing of a convertible device is described, which may include a metal body and an antenna window attached to the metal body. The antenna window may include a non-metallic structure and a metallic structure disposed within the non-metallic structure such that the metallic structure corresponds to an antenna slot defined in an upper housing of the convertible device.