A wearable device comprises a body (1) and an outer casing (2) detachably mounted on the body (1). The body (1) is provided therein with a first printed circuit board (PCB) and a body antenna connected to each other, and the first PCB is provided thereon with a control circuit. The outer casing (2) is provided thereon with an outer casing antenna (201), and when the outer casing (2) and the body (1) are assembled, the outer casing antenna (201) is connected to the first PCB. The control circuit controls switching between the outer casing antenna (201) and the body antenna to use the outer casing antenna (201) or the body antenna as a working antenna. Also provided are an outer casing and a method for controlling an antenna of a wearable device.

Examples disclosed herein relate to a node in a fixed wireless network. The node includes a Beam Steering Antenna Module (“BSAM”) having a beam steering antenna to generate RF beams at controlled directions, and an antenna controller to control the directions of the generated RF beams. The node also includes a transceiver control having an Optimal Path Module (“OPM”) to determine data paths in the fixed wireless network and direct the antenna controller according to the determined data paths.

A communication optimization system/method for mobile networks uses a server that generates waypoints based on a first communication network within a route to be travelled by an aerial vehicle, the aerial vehicle comprising a communication hub configured to communicate with at least one communication node, a communication hub controller configured control movement of a steerable antenna, and an aerial vehicle controller configured control movement of the aerial vehicle. The server then transmits the waypoints to the aerial vehicle controller; periodically monitors networks not connected to the communication hub; when a second communication network not connected to the communication hub satisfies a threshold, transmits causes the communication controller to steer the steerable antenna in a direction of the second communication network, further causing the communication hub to communicate and connect with the second communication network.

A rotatable antenna can include a wireless rotatable interconnect having a stator coil pad coupled to a power supply port for receiving power and to a data port for communication of data and a rotor coil pad that is in bi-directional communication with the stator coil pad. The rotor coil pad superposes the stator coil pad and the rotor coil pad is spaced apart from the rotor coil pad, and the rotor coil pad is rotatable about an axis. A radiating element is coupled to the rotor coil pad, and changes in a rotation of the rotor coil pad about the axis to change a pointing direction of the radiating element. A plurality of wireless channels are established between the stator coil pad and the rotor coil pad and a first channel of the plurality of wireless channels transfers power from the stator coil pad to the rotor coil pad.

An antenna alignment-monitoring method and an antenna alignment-monitoring system are provided. The antenna alignment-monitoring method includes the following steps. An alignment-monitoring system measures an antenna to obtain azimuth information, tilt information and roll information of the antenna. The azimuth information, the tilt information and the roll information are sent from the alignment-monitoring system to a portable device or a server. The azimuth information, the tilt information and the roll information are sent to the portable device and shown on a user interface for aligning the antenna. The azimuth information, the tilt information and the roll information are sent to the server for monitoring the antenna.

In described examples, a quadrature phase shifter includes digitally programmable phase shifter networks for generating leading and lagging output signals in quadrature. The phase shifter networks include passive components for reactively inducing phase shifts, which need not consume active power. Output currents from the transistors coupled to the phase shifter networks are substantially in quadrature and can be made further accurate by adjusted by a weight function implemented using current steering elements. Example low-loss quadrature phase shifters described herein can be functionally integrated to provide low-power, low-noise up/down mixers, vector modulators and transceiver front-ends for millimeter wavelength (mmwave) communication systems.

Beamformers and beamforming methods are disclosed which involve diagonal loading (regularization). Features may include the automatic determination of the regularization parameter using a linearly constrained minimum power (LCMP) bounded perturbation regularization (BPR) approach.

Beamformers and beamforming methods are disclosed which involve diagonal loading (regularization). Features may include the automatic determination of the regularization parameter using a linearly constrained minimum power (LCMP) bounded perturbation regularization (BPR) approach.

The present invention relates to an antenna clamping device and a method of controlling the same, and particularly, the antenna clamping device includes a tilting rotation motor configured to rotate an antenna in a vertical direction, a tilting rotation prevention motor configured to lock or unlock a vertical rotation of the antenna, a rotating rotation motor configured to rotate the antenna in a horizontal direction, a rotating rotation prevention motor configured to lock or unlock a horizontal rotation of the antenna, and a controller configured to adjust a direction of the antenna by controlling the tilting rotation motor, the tilting rotation prevention motor, the rotating rotation motor, and the rotating rotation prevention motor, thereby improving operation convenience.

Various examples are provided for meander line (ML) slots, which can be used for mutual coupling reduction. In one example, an antenna array includes first and second patch antenna elements disposed on a first side of a substrate, the first and second patch antenna elements separated by a gap. The antenna array can include a meander line (ML) slot formed in a ground plane disposed on a second side of the substrate. A plurality of ML slots can be aligned with the gap between the first and second patch antenna elements. In another example, a method includes forming first and second antenna elements on a first side of a substrate and forming a ML slot in a ground plane disposed on a second side of the substrate aligned with a gap between the first and second antenna elements.