7 results about "Lens antennas" patented technology

This invention discloses a microwave non-destructive testing device for grain moisture content. The device includes a shell, metamaterial lens antennas, a grain container, a 4.3-inch capacitive touchscreen, a coaxial cable, a near-infrared temperature probe, a microwave absorbing material plate, and a main control circuit board. The main control circuit board includes a main control chip, a 24GHz microwave transmitting circuit, and a 24GHz microwave receiving circuit. The main control circuit board is connected to symmetrical metamaterial lens antennas on both sides of the device via the coaxial cable. The device measures the change in scattering parameters between the two antennas using microwave signals, calculates the complex permittivity of the grain moisture content based on this change, and then uses a density-independent algorithm and a temperature calibration algorithm to invert the grain moisture content. The measurement results are displayed on the capacitive touchscreen. A microwave absorbing material plate is attached to the inner surface of the shell to reduce microwave reflection interference; a near-infrared temperature probe is used to quickly detect the grain temperature, reducing measurement errors caused by temperature.

Methods, systems, and devices for wireless communications are described. A network entity may generate a set of beamforming weights for a lens antenna associated with the network entity. Further, the network entity may generate the set of beamforming weights based on a convergence location corresponding to a target coverage area of a cell supported by the network entity. The convergence location may be based on the target coverage area and on one or more parameters of the lens antenna. As such, the network entity may transmit, via a set of antenna elements of the lens antenna, a signal to a user equipment (UE) in accordance with the set of beamforming weights for the lens antenna such that the signal may be spatially distributed within the target coverage area of the cell.

This invention relates to a DBF lens phased array antenna, belonging to the fields of wireless communication and antenna technology. It includes a low-cost planar electromagnetic lens, a sparse array antenna element, a coupling calibration network, a TR component, a cooling module, digital acquisition and DBF signal processing, and a power supply module. This invention combines a digital multi-beam phased array antenna with a lens antenna, exploring and researching low-cost DBF lens antennas to improve antenna gain. This provides technical support for reducing the cost of high-performance phased array antenna systems and lays a solid foundation for further reducing the cost of ad hoc network communication systems.

The invention provides an array antenna taking a plastic lens antenna as a unit, and relates to the technical field of antennas. Each plastic lens antenna unit is composed of a patch antenna and a customized lens above the patch antenna, and then 128 units form an array in a 16 * 8 mode. Besides, the lens is made of PTFE materials and is composed of a hyperboloid lens and a medium flat plate, and the design of the lens significantly enhances the gain of the unit and narrows the beam width. Finally, the whole antenna array achieves high gain and extremely narrow wave beams under 77GHz, and compared with a traditional array, the performance is greatly improved. The invention is mainly used for a high-precision radar detection system, has the advantages of high resolution, strong anti-interference capability, low cost and easiness in manufacturing, and has important potential application value.

A mobile computing device includes a plurality of antennas. Each one of the plurality of antennas includes an antenna feed element. The mobile computing device includes a reflector or lens comprising at least one gradient index (GRIN) lens, wherein the reflector or lens is further configured to focus a first signal generated by the antenna feed element and focus a second signal not generated by the antenna feed element onto the antenna feed element.

The application relates to the technical field of lens antennas, and discloses a reconfigurable multi-form stacked dragon's eye lens antenna and a manufacturing method thereof. The antenna is formed by embedding and fixing a plurality of layers of cylindrical plates. The plurality of layers of cylindrical plates can be disassembled and freely embedded and fixedly installed between different layers of cylindrical plates. The antenna comprises a top layer, an intermediate layer and a connecting layer. The cylindrical plate of the top layer is provided with embedded holes for fixation. The front surface of the cylindrical plate of the intermediate layer is provided with a cylindrical embedding body, and the back surface is provided with embedded holes. The cylindrical plate of the connecting layer is provided with cylindrical embedding bodies on both surfaces. The embedding and fixation of the cylindrical plates are completed through a plurality of embedded holes and corresponding cylindrical embedding bodies. The dragon's eye lens antenna is not limited to a fixed scene and can be used as a whole sphere, a single double hemisphere and a back-to-back double hemisphere. The antenna is efficiently applicable to scenes such as schools, venues, high-speed rails, tunnels and base stations. The characteristics are particularly important for modern wireless communication systems.

Methods, systems, and devices for wireless communication are described. A network entity may generate a set of beamforming weights for a lens antenna associated with the network entity. Further, the network entity may generate a set of beamforming weights based on convergence locations of target coverage areas corresponding to cells supported by the network entity. The convergence location may be based on the target coverage area and based on one or more parameters of the lens antenna. As such, the network entity may transmit a signal to a user equipment (UE) via the set of antenna elements of the lens antenna according to the set of beamforming weights for the lens antenna, such that the signal may be spatially distributed within a target coverage area of the cell.