A full-duplex User Terminal Panel (UTP) including one or more User Terminal Modules (UTM) having a plurality of Tx antenna elements. Each of the Tx antenna elements spaced apart from one another by a distance dTx. The full-duplex UTP further includes a plurality of Rx antenna elements. Each of the Rx antenna elements are spaced apart from one another by a distance dRx. Furthermore, the Tx antenna elements may be spaced according to a Tx lattice dTx, such that the Tx lattice dTx spacing arrangement provides grating lobe-free scanning in an elevation plane at a Tx frequency range. The Rx antenna elements are spaced according to an Rx lattice dRx, such that the Rx lattice dRx spacing arrangement provides grating lobe-free scanning in an elevation plane at a Rx frequency range.

An apparatus includes antenna, selector, estimator, imager and creator. The antenna includes antenna elements of N rows by N columns (N is a natural number of 2 or more) arranged in an array and captures an incoming wave. The selector selects an antenna element group including antenna elements of M rows by M columns (M is a natural number less than N) from the antenna elements of N rows by N columns according to a band of the incoming wave. The estimator estimates an incoming direction of the incoming wave from an element signal of each of the antenna elements included in the selected antenna element group. The imager acquires image data by imaging an orientation direction of an aperture of the antenna. The creator creates a visualized image by visually synthesizing the estimated incoming direction with the image data.

A multi-input multi-output (MIMO) antenna system includes a metal plate, a background scanning antenna, a plurality of working antennas, and an isolator module. The isolator module is mountable on the metal plate and includes a plurality of isolators that are in a ring configuration to form an isolated space therein, so that the background scanning antenna can be located in the isolated space and a plurality of working antennas are located outside of the isolated space, thereby ensuring good isolation of the background scanning antenna from the working antennas by the design of the isolator module.

Technologies directed to interleaved phased array antennas are described. One apparatus includes a support structure, a fist antenna array, and a second antenna array. The first antenna array includes a first set of antenna elements disposed on a surface of the support structure. The first set of antenna elements is spaced apart by a first distance. The second antenna array includes a second set of antenna elements disposed on the surface of the support structure. The second set of antenna elements is located in spaces between the first set of antenna elements on the surface and the second set of antenna elements is spaced apart by a second distance that is less than the first distance.

Flat RF tiles for multiple band electrical steerable antennas. To improve an antenna system for a communication between a vehicle and a satellite, a planar antenna array for multiple band satellite communication includes an array of flat RF tiles. Each RF tile includes a structure of antenna elements, wherein a first antenna element arrangement is configured to radiate in an uplink and downlink portion of a first satellite communication frequency band and a second antenna element arrangement is configured to radiate in an uplink and downlink portion of a second satellite communication frequency band.

Methods, systems, and devices for free-space optical communications. An aircraft includes a flat optical communication terminal on an external surface of the aircraft, the flat optical communication terminal being configured to communicate with a ground station via a free-space optical communication link.

An antenna element with a filtering function, a filtering radiation unit, and an antenna. The antenna element is tubular, with a spiral slit arranged around the periphery of the tubular antenna element and extending in an axial direction. The filtering radiation unit includes a support column, and an upper part of the support column is electrically connected to at least one antenna element. The antenna includes a reflecting plate, and at least one filtering radiation unit is fixedly arranged on the reflecting plate. The antenna element with a filtering function has functions of radiating signals and suppressing interference simultaneously. The filtering radiation unit can cooperate with a high-frequency radiation element during use to achieve the aim of radiating a high-frequency signal and a low-frequency signal simultaneously. The antenna is good in performance, small in size, and high in integration degree.

A reflector assembly configured to be disposed within a radome of the base station antenna. A reflector of the reflector assembly is composed of an aluminum alloy coated mild steel. Further, the reflector may include lateral sides extending along a longitudinal axis of the reflector, and each lateral side may be bent to form a U-shaped profile. Also, the reflector assembly comprises one or more support members and one or more mounting brackets that are adapted to provide support and facilitate mounting of the reflector in the radome. The one or more support members and the one or more mounting brackets may be composed of an aluminum alloy coated mild steel.

An electronic device may be provided with a phased antenna array on an antenna module. The array may include low band antennas and high band antennas that radiate at frequencies greater than 10 GHz. The module may include antenna layers, transmission line layers, and ground traces that separate the antenna layers from the transmission line layers. The low band antennas and the high band antennas may have radiators patterned onto the antenna layers. The radiators may be fed by transmission lines on the transmission line layers. The antenna layers may have a dielectric permittivity that is greater than the dielectric permittivity of the transmission line layers. This may serve to reduce the lateral footprint of the low band and high band antennas, which allows the antennas to be interleaved along a common linear axis in the phased antenna array, thereby minimizing the lateral footprint of the antenna module.

Disclosed is an antenna that enables dense packing of low band, mid band, and C-band radiators. The low band radiators have a plurality of dipole arms that minimize re-radiation of either RF energy emitted by either the mid band or C-Band radiators. In one embodiment, the dipole arms are formed of a two-dimensional structure that has a shape that substantially prevents re-radiation in both the mid band and the C-band. In another embodiment, the dipole arms have two different configurations: a first configuration optimized for preventing re-radiation in the mid band, and a second configuration optimized for preventing re-radiation in the C-Band. In the latter embodiment, the low band radiators in close proximity to the mid band radiators have dipole arms of the first configuration, and the low band radiators in close proximity to the C-Band radiators have dipole arms of the second configuration.