An apparatus is disclosed herein for a cylindrically fed antenna and method for using the same. In one embodiment, the antenna comprises: an antenna feed to input a cylindrical feed wave; a first layer coupled to the antenna feed and into which the feed wave propagates outwardly and concentrically from the feed; a second layer coupled to the first layer to cause the feed wave to be reflected at edges of the antenna and propagate inwardly through the second layer from the edges of the antenna; and a radio-frequency (RF) array coupled to the second layer, wherein the feed wave interacts with the RF array to generate a beam.

The disclosure concerns an antenna assembly having a substrate with an antenna radiating element and a ground conductor disposed on the substrate, the ground conductor further characterized by a plurality of ground resonators, wherein a length associated with each of the ground resonators increases as the ground resonators are distanced from the antenna radiating element. Additionally, a coaxial cable is routed around the antenna assembly for configuring the coaxial cable as an additional ground resonator associated with the antenna assembly. The resulting antenna provides wide band performance between 700 MHz and 2700 MHz with improved efficiency compared with conventional antennas.

The disclosure concerns an antenna assembly having a substrate with an antenna radiating element and a ground conductor disposed on the substrate, the ground conductor further characterized by a plurality of ground resonators, wherein a length associated with each of the ground resonators increases as the ground resonators are distanced from the antenna radiating element. Additionally, a coaxial cable is routed around the antenna assembly for configuring the coaxial cable as an additional ground resonator associated with the antenna assembly. The resulting antenna provides wide band performance between 700 MHz and 2700 MHz with improved efficiency compared with conventional antennas.

A solution to the growing customer demand on cell tower signal capacity is needed. As such, a directional antenna for cellular communication, a communications system using the directional antenna, and a method of communicating using the directional antenna are provided herein. In one example, the directional antenna includes: (1) a Luneburg lens having a spherical shape, and (2) a curved substrate that conforms to the spherical shape of the Luneburg lens, the curved substrate having a feed network of signal conveyors affixed to a front side and a ground plane back side, wherein the signal conveyors are aligned with the Luneburg lens to communicate radio frequency signals within a sector.

A solution to the growing customer demand on cell tower signal capacity is needed. As such, a directional antenna for cellular communication, a communications system using the directional antenna, and a method of communicating using the directional antenna are provided herein. In one example, the directional antenna includes: (1) a Luneburg lens having a spherical shape, and (2) a curved substrate that conforms to the spherical shape of the Luneburg lens, the curved substrate having a feed network of signal conveyors affixed to a front side and a ground plane back side, wherein the signal conveyors are aligned with the Luneburg lens to communicate radio frequency signals within a sector.

A phased array antenna system having radiating units unitarily formed and arranged in an array by direct metal sintering avoiding assembly requirements. Each radiating unit includes a free-space impedance transformer having first, second and third radiator elements. Each radiating unit includes an embedded balun having first, second, and third impedance transition elements located generally concentric with the first, the second, and the third radiator elements and distally connected respectively to form a first integrated coaxial interface, a second integrated coaxial interface, and an integrated ground interface. Each radiating unit includes a ground plane electrically coupled to the integrated ground interface.

An apparatus is disclosed herein for a cylindrically fed antenna and method for using the same. In one embodiment, the antenna comprises an antenna feed to input a cylindrical feed wave and a tunable slotted array coupled to the antenna feed.

An apparatus is disclosed herein for a cylindrically fed antenna and method for using the same. In one embodiment, the antenna comprises an antenna feed to input a cylindrical feed wave and a tunable slotted array coupled to the antenna feed.

The application provides an antenna and a communications device, and pertains to the field of antenna technologies. The antenna includes a horizontally polarized antenna and a vertically polarized antenna that are disposed in a superposition manner. The horizontally polarized antenna includes a metal sheet, and the metal sheet can be separately connected to a double-sided parallel strip line in the horizontally polarized antenna and a first conductor of a coaxial cable. A diameter of a maximum inscribed circle of the metal sheet is greater than a line width of the double-sided parallel strip line, and both the metal sheet and the coaxial cable are located on a first side of a substrate. Therefore, the metal sheet can effectively suppress an induced current in the coaxial cable, and impact of the induced current on the vertically polarized antenna can be reduced.

A technique for controlling an airborne antenna system (304) for a radio telecommunications network mounted on an aircraft (300) is described. As to a method aspect performed by the aircraft (300), a physical antenna orientation of the antenna system (304) relative to geographic cardinal directions is determined. The physical antenna orientation is stabilized in a predefined direction relative to the geographic cardinal directions by controlling a rotational actuator (514) of the antenna system (304).