In one embodiment, a multi-beam antenna is described. The multi-beam antenna includes a reflector having a single reflector surface defining a first focal region and a second focal region. A first feed group is located within the first focal region. The first feed group includes a first feed oriented relative to the reflector define a first beam pointed in a first direction. The multi-beam antenna further includes a fixed attachment mechanism attaching the first feed group to the reflector such that a position of the first feed group is fixed relative to the reflector. The multi-beam antenna further includes a second feed group located within the second focal region. The second feed group includes a second feed oriented relative to the reflector to define a second beam pointed in a second direction. The multi-beam antenna further includes an adjustable attachment mechanism attaching the second feed group to the reflector in an adjustable relation to the reflector, whereby a difference between the first direction and the second direction is adjustable.

Novel tools and techniques are provided for implementing antenna alignment, and, more particularly, to methods, systems, and apparatuses for implementing antenna alignment using a gimbal. In various embodiments, a gimbal system might be provided. The gimbal system may be at least one of a passive two-axis gimbal, a passive three-axis gimbal, an active two-axis gimbal, and/or an active three-axis gimbal. At least one antenna may be coupled to the gimbal system. The gimbal system may be configured to compensate for at least one of a movement of a structure and/or a wind load on the at least one antenna. Additionally and/or alternatively, the gimbal system may be configured to align the antenna toward the position and orientation where there is the signal quality is optimized.

A communication system, which is applied to a space, includes a first transceiver and a communication device. The first transceiver is fixedly disposed in the space. The communication device is movable in the space. The communication device includes a base, a second transceiver, a detection circuit, an arm and a processor. The second transceiver is oriented to an orientation and configured to build a signal transmission with the first transceiver. The detection circuit is configured to detect a displacement or rotation of the communication device with respect to the first transceiver, in order to generate detection information. One end of the arm is connected to the base, and another end of the arm is connected to the second transceiver. The processor is configured to control an operation of the arm according to the detection information, in order to maintain the orientation of second transceiver directing to the first transceiver.

An antenna is selected in a system including a first and at least one second device. The system forms a communication network of TDMA type where each communication occurs in frames. The first device includes plural antennas that each covers a predefined sector near the antennas. The frames are organised in a succession of groups of consecutive frames, each group being organised in a structure associating each frame with a pair formed by an antenna of the first device and of a second device, each possible pair being associated with a different frame in the group according to a position of the frame in the group. For each device including plural antennas: information is obtained representing communication quality between the device's antenna and the first or a second device's antenna, and the antenna is selected having the highest communication quality with an antenna of the first or a second device.

A radome (20) includes a first region (20A) and a second region (20B) having different radio-wave transmission characteristics from each other, and is configured to form a null pattern in substantially a front direction of an antenna by superimposing a first radio wave that has passed through the first region (20A) and a second radio wave that has passed through the second region (20B).

Novel tools and techniques are provided for implementing non-line-of-sight radio antenna alignment. In various embodiments, a computing system might receive first and second signals from first and second sensors. The first and second sensors might be attached to a first antenna and disposed apart from each other along a horizontal plane that is perpendicular to a direction from which the first antenna receives signals from a second antenna located a distance away. The computing system might analyze the first and second signals to determine which signal is stronger, and, based on a determination that one signal is greater than the other, might send a first output signal indicating to rotate the first antenna horizontally about a vertical axis toward the second antenna and might repeat the receiving and analyzing processes until a difference between the first and second signals has been reduced to within a predetermined threshold similarity value.

The application discloses an apparatus and a multi-band antenna network system. The apparatus includes at least two phase shifters. The phase shifters have different frequency bands. Each phase shifter includes a signal line layer and components that are configured to change a phase of an output port of the signal line layer. The components are slidable relative to the signal layer. A filter circuit is provided at an output port of the signal layer. Output ports of filter circuits corresponding to the at least two phase shifters are connected by a conductor, and perform output using a common output port.

The present disclosure aims to provide an antenna directivity adjustment apparatus and an antenna directivity adjustment method capable of preventing an antenna gain from being reduced and easily adjusting a direction of an antenna. An antenna directivity adjustment apparatus (1) includes: a second antenna (2) that is opposed to a radiation surface (100a) of a first antenna (100) and receives radio waves output from the first antenna (100); and an output unit (3) that is provided in the second antenna (2), converts a first beam width of the received radio waves into a second beam width wider than the first beam width, and outputs the radio waves having the second beam width.

Systems and methods are described for supporting dynamic antenna platform offset calibration for an antenna system mounted to a mobile vehicle. In particular, dynamic antenna platform offset calibration can be performed while communicating user data associated with the mobile vehicle (e.g., based at least in part on alignment calibration procedures including measurements of user data signals), with an antenna platform offset being updated when alignment calibration procedures have been performed at suitably separated spatial conditions. Accordingly, antenna platform offset calibration may be performed throughout the operation of the mobile vehicle without requiring that the vehicle be proactively aligned in a particular orientation for a dedicated calibration routine prior to using the antenna for communicating user data during normal operation of the mobile vehicle.

Provided are an antenna angle adjustment device, an antenna angle adjustment system, an antenna angle adjustment method, and a communications device, whereby the angle of an antenna can be adjusted to a direction in which direct waves can be more reliably received. A direction information generation unit 41 generates direction information indicating a direction of one antenna from another antenna. A range information generation unit 42 generates range information indicating a range of a main beam of the another antenna. A determination unit 43 determines, based on the range information and the direction information, whether or not the one antenna is in a range indicated by the range information.