A vehicle includes a vehicle body, a drive mechanism, a windshield, an antenna part provided in a vehicle interior, and a reflection suppression layer including a dielectric layer that closely adheres to a surface on the antenna part side of the windshield. The dielectric layer has a refractive index that is lower than a refractive index of a glass layer of the windshield and higher than a refractive index of air. The dielectric layer has a thickness that allows reflection of the transmission wave to be suppressed by interference between a reflected wave generated by reflection of the transmission wave on an interface on the opposite side of the innermost glass layer of the windshield to the antenna part side, and a reflected wave generated by reflection of the transmission wave on a surface on the antenna part side of the dielectric layer.

Disclosed are examples of systems, apparatus, methods and computer program products for locating unmanned aerial vehicles (UAVs). A region of airspace may be scanned with two scanning apparatuses. Each scanning apparatus may include one or more directional Radio Frequency (RF) antennae. The two scanning apparatuses may have different locations. Radio frequency signals emitted by a UAV can be received at each of the two scanning apparatuses. The received radio frequency signals can be processed to determine a first location of the UAV.

Disclosed are examples of systems, apparatus, methods and computer program products for locating unmanned aerial vehicles (UAVs). A region of airspace may be scanned with two scanning apparatuses. Each scanning apparatus may include one or more directional Radio Frequency (RF) antennae. The two scanning apparatuses may have different locations. Radio frequency signals emitted by a UAV can be received at each of the two scanning apparatuses. The received radio frequency signals can be processed to determine a first location of the UAV.

A high-power electromagnetic source for HPEM pulses in a desired radiation direction includes at least three antennas fixed in relation to one another for pulse components, wherein at least two groups of antennas with a respective main direction are present, and a control unit for the activation and phase position of the pulse components for the superimposition for the HPEM pulse, wherein the current radiation direction of said pulse is selectable in an angle range around the main direction. A vehicle with an HPEM source has the antennas mounted in a fixed position or a support for the antennas is pivotably mounted on the vehicle. In a method for emitting the HPEM pulse, all antennas are controlled in order to select the radiation direction in the angle range of less than 360°.

A high-power electromagnetic source for HPEM pulses in a desired radiation direction includes at least three antennas fixed in relation to one another for pulse components, wherein at least two groups of antennas with a respective main direction are present, and a control unit for the activation and phase position of the pulse components for the superimposition for the HPEM pulse, wherein the current radiation direction of said pulse is selectable in an angle range around the main direction. A vehicle with an HPEM source has the antennas mounted in a fixed position or a support for the antennas is pivotably mounted on the vehicle. In a method for emitting the HPEM pulse, all antennas are controlled in order to select the radiation direction in the angle range of less than 360°.

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.

The present disclosure provides a linkage structure including an upper bracket and a lower bracket, wherein said upper bracket includes a first linkage unit, a second linkage unit, a middle piece and two sets of adjusting pieces, one end of said middle piece is connected to said first linkage unit and the other end is connected to said second linkage unit; wherein at least one adjusting piece in each set of adjusting pieces is connected rotatably to said first linkage unit or said second linkage unit. According to the linkage structure of the present disclosure, mechanical tilt can be achieved by driving two sets of adjusting pieces to move in coordination, it can ensure the accuracy of mechanical tilt, realize mechanical tilt at any angle, and the operation process is friendly and safe.

Disclosed embodiments relate to communicating with satellites at any elevation. In one example, an antenna system includes two or more user terminal panels (UTPs). Each of the UTPs include multiple user terminal modules (UTMs). The UTPs may be arranged in either a fixed, an adjustable geometry or a combination thereof. A UTM has multiple user terminal elements (UTEs) that include antennas and active circuits. An antenna may either generate an incoming signal in response to incident radio waves received from a satellite and/or may transmit an outgoing signal toward the satellite. Each active circuit is configured to process the incoming and outgoing signals. Also, the antenna system may include a control circuit configured to control signal processing performed by the active circuits. The UTPs may be operably connected to a single satellite, or different UTPs may be operably connected to different satellites.

Base station antennas a reflector, an RF port, an array of radiating elements, where each radiating element is mounted to extend forwardly from the reflector and mechanically uptilted with respect to the reflector, and a feed network coupled between the RF port and the array of radiating elements. The feed network includes a plurality of delay elements that are configured to impart a fixed electronic downtilt to a radiation pattern generated by the array of radiating elements in response to an RF signal input at the RF port.

Base station antennas a reflector, an RF port, an array of radiating elements, where each radiating element is mounted to extend forwardly from the reflector and mechanically uptilted with respect to the reflector, and a feed network coupled between the RF port and the array of radiating elements. The feed network includes a plurality of delay elements that are configured to impart a fixed electronic downtilt to a radiation pattern generated by the array of radiating elements in response to an RF signal input at the RF port.