A base station antenna comprises a reflector, a plurality of first radiating elements arranged in a first column that extends in a vertical direction, a plurality of second radiating element arranged in a second column that extends in the vertical direction, and a plurality of parasitic elements, where the parasitic elements are arranged around the first radiating elements and/or second radiating elements. Each parasitic element is configured as a rod-shaped metal part, where a longitudinal axis of the rod-shaped metal part extends at an angle of between 70° to 110° with respect to a plane defined by the reflector, and the parasitic elements are positioned in front of the reflector in and are electrically floating with respect to the reflector.

A mobile terminal includes a housing having a front side, a rear side, and lateral sides, and including a metal rim formed of a metal material and at least one bending portion formed of a non-metal material. The mobile terminal includes a rear cover disposed on the rear side of the housing, a reflection sheet disposed on the cover and formed of a metal material, and an antenna module disposed between the rear cover and a front cover of the housing and configured to radiate a beamforming wireless signal, wherein a bending portion of the cover and a flat portion of the cover are configured to include a first region, a second region, and a third region, and a beamforming wireless signal of the first region may be reflected at the second region and the third region by the reflection sheet.

Radio location finding A method of detecting a radio emission source (2) includes receiving three or more radio signal datasets from three or more respective sensors (3). Each sensor (3) corresponds to a physical location and includes at least one radio receiver (4). The three or more radio signal datasets include one or more directional datasets obtained using a directional antenna (9, 23) or a directional antenna array of the corresponding sensor, and two or more omnidirectional datasets, each obtained using an omnidirectional antenna (9, 22) or an omnidirectional antenna array of the corresponding sensor. The method also includes determining whether an emitter signal (8) within a target frequency range is present in any of the one or more directional datasets. The method also includes, for each directional dataset, in response to the emitter signal (8) is present in that directional dataset, carrying out a correlation based time-of-arrival location finding calculation based on that directional dataset and at least two further radio signal datasets.

Embodiments of the present invention pertain to the field of communications technologies and disclose a multi-band antenna and a communications device. The multi-band antenna includes a reflection panel, at least one high-frequency unit, and at least one low-frequency unit. Each high-frequency unit includes a balun structure, a coupling structure, and a radiation arm structure. The balun structure includes two balun sub-structures, the coupling structure includes two coupling sub-structures, and the radiation arm structure includes two radiation arms. The high-frequency unit and the low-frequency unit are disposed on the reflection panel. Each coupling sub-structure is separately electrically connected to one balun sub-structure and one radiation arm. The coupling sub-structure is configured to transmit a signal whose frequency is higher than a preset threshold, and block a signal whose frequency is lower than the preset threshold.

The present invention relates to an antenna assembly. The antenna assembly comprises a feed board, a backplane, and a calibration board. A plurality of radiating elements are mounted on the feed board and extend forwardly from the feed board. The feed board is mounted on a first major surface of the backplane, and the calibration board is mounted on a second major surface of the backplane opposite the first major surface. The antenna assembly further includes a conductive structure, which extends through openings in at least two of the feed board, the backplane and the calibration board so as to electrically connect a first transmission line on the calibration board with a second transmission line on the feed board. The antenna assembly according to embodiments of the present invention can also achieve high integration and miniaturization of the overall antenna construction. Further, the present invention relates to a base station antenna comprises an antenna assembly.

Antenna feed chains and methods are disclosed. An antenna feed chain, include a feed horn having a first cross-polarization performance over a solid angle of interest and a frequency band of interest and a polarizer having a second cross-polarization performance over the solid angle of interest and the frequency band of interest. The polarizer is coupled to the feed horn. The first cross-polarization performance of the feed horn compensates for the second cross-polarization performance of the polarizer over the solid angle of interest and the frequency band of interest.

The present invention relates to a base station antenna. The base station antenna comprises: a reflector that is configured to provide a ground plane; a first radiating element array including at least one first cross-polarized radiating element that is arranged on the reflector; and a first parasitic element array including first through third parasitic element pairs, wherein each of the first through third parasitic element pairs includes a pair of parasitic elements that are arranged substantially symmetrically on both sides of the first longitudinal axis, and distances from the first through third parasitic element pairs respectively to the first longitudinal axis increase sequentially, wherein projections of any two of the first parasitic element pair, the second parasitic element pair, the third parasitic element pair, and the at least one first cross-polarized radiating element on the first longitudinal axis at least partly overlap.

The present invention relates to a base station antenna. The base station antenna comprises: a reflector that is configured to provide a ground plane; a first radiating element array including at least one first cross-polarized radiating element that is arranged on the reflector; and a first parasitic element array including first through third parasitic element pairs, wherein each of the first through third parasitic element pairs includes a pair of parasitic elements that are arranged substantially symmetrically on both sides of the first longitudinal axis, and distances from the first through third parasitic element pairs respectively to the first longitudinal axis increase sequentially, wherein projections of any two of the first parasitic element pair, the second parasitic element pair, the third parasitic element pair, and the at least one first cross-polarized radiating element on the first longitudinal axis at least partly overlap.

The present application relates to an electromagnetic band-gap, a directional antenna including same, and a use thereof. The electromagnetic band-gap structure and the directional antenna including same, of the present application, are lightweight and small in size, and can have excellent directivity. In addition, the electromagnetic band-gap structure and the directional antenna including same can be used for aviation electronic equipment and portable measurement equipment.

A base station antenna includes a radome and an antenna assembly that is mounted within the radome. The antenna assembly includes a backplane that includes a first reflector, a first array that includes a plurality of first radiating elements mounted to extend forwardly from the first reflector, a second reflector mounted to extend forwardly from the first reflector and a second array that includes a plurality of second radiating elements mounted to extend forwardly from the second reflector. The first radiating elements extend a first distance forwardly from the first reflector and the second radiating elements extend a second distance forwardly from the second reflector, where the first distance exceeds the second distance.