A device forming a photonic phased array antenna includes a low-refractive dielectric substrate, a nano-structured thin film formed on the low-refractive dielectric structure, and a high-refractive semiconductor waveguide formed over the low-refractive dielectric substrate and configured to operate in a single mode in the nano-structured thin film, wherein an antenna radiating a phase-modulated light wave to a free space is miniaturized to concentrate a radiated beam of a phased array antenna and to widen a scanning range.

A device forming a photonic phased array antenna includes a low-refractive dielectric substrate, a nano-structured thin film formed on the low-refractive dielectric structure, and a high-refractive semiconductor waveguide formed over the low-refractive dielectric substrate and configured to operate in a single mode in the nano-structured thin film, wherein an antenna radiating a phase-modulated light wave to a free space is miniaturized to concentrate a radiated beam of a phased array antenna and to widen a scanning range.

A method of communicating between an aerial vehicle and a cellular radio access network is described. In some cases, the method includes determining a current location of the aerial vehicle; determining, in response to the current location, a location of a nearest cell of the cellular radio access network; and processing communications between the aerial vehicle and the cellular radio access network, using the nearest cell as a serving cell. When the method is performed on-board an aerial vehicle, the method further includes orienting a directional antenna of the aerial vehicle toward the location of the nearest cell.

Embodiments of a dielectric waveguide body comprising an internal reflection surface configured to redirect mmWave radio signals propagating within the waveguide body such that mmWave radio signals emitted by an antenna are redirected to generate a main beam and at least one sidelobe.

There is provided an antenna arrangement having unequally many physical antenna elements for transmission and reception. The antenna arrangement comprises physical antenna elements. All physical antenna elements are configured for signal reception but less than all of the physical antenna elements are configured for both signal transmission and signal reception. A first portion of those physical antenna elements configured for both signal transmission and signal reception and a second portion of those physical antenna elements configured for both signal transmission and signal reception are in the antenna arrangement placed to, during operation of the antenna arrangement, be vertically separated by physical antenna elements configured for only signal reception.

A phased array antenna device comprises antenna elements positioned within a corresponding unit cell. The unit cells are arranged non-overlappingly next to each other. A feeding network transmits antenna signals between a common control unit and the respective antenna element. The feeding network comprises a plurality of antenna element transmission line segments, each running into an antenna element, and a plurality of phase shifting devices. Several feeding transmission line segments, each comprising more than two transition structures are provided. Each transition structure couples a signal into a corresponding antenna element transmission line segment. The transition structure for an antenna element transmission line segment that runs into a unit cell is positioned in the direction of the feeding transmission line segment passing by or traversing this unit cell at a phase shifting distance that is larger than an extension of the unit cell measured in this direction.

Systems, methods, and non-transitory media are provided for cross-coupling modeling and compensation. An example method can include determining one or more cross-coupling coefficients representing electrical cross-coupling within a component of a phased array antenna, wherein the component of the phased array antenna includes one or more signal paths between one or more beamformers of the phased array antenna and a set of antenna elements of the phased array antenna; based on the one or more cross-coupling coefficients, modifying one or more beamforming weights calculated for one or more signals routed via the one or more signal paths, wherein the modified one or more beamforming weights compensate for the electrical cross-coupling effect within the component of the phased array antenna; and applying, by the one or more beamformers, the modified one or more beamforming weights to the one or more signals routed via the one or more signal paths.

Systems, methods, and non-transitory media are provided for cross-coupling modeling and compensation. An example method can include determining one or more cross-coupling coefficients representing electrical cross-coupling within a component of a phased array antenna, wherein the component of the phased array antenna includes one or more signal paths between one or more beamformers of the phased array antenna and a set of antenna elements of the phased array antenna; based on the one or more cross-coupling coefficients, modifying one or more beamforming weights calculated for one or more signals routed via the one or more signal paths, wherein the modified one or more beamforming weights compensate for the electrical cross-coupling effect within the component of the phased array antenna; and applying, by the one or more beamformers, the modified one or more beamforming weights to the one or more signals routed via the one or more signal paths.

An antenna module includes digital phase shifters, a plurality of antenna elements arranged in a first direction, and a fixed phase shifter. Each of the digital phase shifters changes a phase of a signal to a first phase value. The fixed phase shifter changes a phase of a signal to a second phase value, the second phase value being obtained by adding a predetermined offset phase value to the first phase value. A middle point of a virtual line is an antenna center and connects a center of an antenna element located on an end in the first direction and a center of an antenna element located on a different end. Under a symmetrical condition, an antenna center among the plurality of antenna elements are paired as an antenna element pair, the fixed phase shifter is electrically connected to at least one antenna element of the antenna element pair.

An antenna module includes digital phase shifters, a plurality of antenna elements arranged in a first direction, and a fixed phase shifter. Each of the digital phase shifters changes a phase of a signal to a first phase value. The fixed phase shifter changes a phase of a signal to a second phase value, the second phase value being obtained by adding a predetermined offset phase value to the first phase value. A middle point of a virtual line is an antenna center and connects a center of an antenna element located on an end in the first direction and a center of an antenna element located on a different end. Under a symmetrical condition, an antenna center among the plurality of antenna elements are paired as an antenna element pair, the fixed phase shifter is electrically connected to at least one antenna element of the antenna element pair.