22 results about "Lens antennas" patented technology

To provide a lens adopted for an antenna device with a simple structure that a communication quality deterioration and a communication interruption are hardly generated in the case where it is adopted to a communication between mobile bodies.SOLUTION: A lens comprises a lens main body of a dielectric body, including a penetration hole in which a horizontal inner surface non-directional antenna is arranged, and includes a convex-like outer curvature of a rotation symmetry to a circumference of a center shaft of the penetration hole, and formed by a whole or a part of a peripheral direction of the rotation symmetry. An inner surface faced to the penetration hole of the lens main body is separated from the center shaft of the penetration hole by λ / 2π or more, and a distance of a separation may be not equal to a focal distance F in a radial direction of the lens main body. The outer curvature surface of the lens main body may be an aspherical surface that is determined on the basis of a relative dielectric constant of the dielectric body, a distance from the focal distance in the radial direction of the lens main body, and an end edge from a shaft direction center of the inner surface of the lens main body. The focal distance F in the radial direction of the lens main body may be a double of λ / 2π (λ is a wavelength of an electric wave). In the lens main body, a reflection member may be arranged in a partial omission part one part of the peripheral direction of the rotational symmetry is omitted.SELECTED DRAWING: Figure 7

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may send a first measurement report to a network entity, the first measurement report including a set of beam measurement results corresponding to a set of beams in a beam codebook. The network entity may then perform the weighted measurement calculation set to determine a first serving beam that is different from each beam in the set of beams in the existing beam codebook. The network entity may then send a first serving beam indication that commands the UE to begin monitoring the first serving beam. The UE may then send a second measurement report to the network entity comprising a second set of beam measurements, the second set of beam measurements comprising measurements for the first serving beam. The network entity and the UE may then communicate via the first serving beam based on the measurement for the first serving beam satisfying a threshold.

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.

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.

The application belongs to the technical field of lens antennas, and particularly relates to an inner-focus dragon lens antenna based on an arithmetic progression layer, which comprises a horn-shaped feed source and an inner-focus dragon lens, the horn-shaped feed source is arranged at the bottom surface center position of the inner-focus dragon lens; the inner-focus dragon lens is divided into ten layers by using an arithmetic progression thickness method, wherein the spherical center layer is the first layer, and the outermost layer is the tenth layer; the thickness of the first layer of the inner-focus dragon lens is 0.4 times the radius of the entire inner-focus dragon lens, the thickness of the second layer is 1.6 mm, and the thickness of each layer is smaller than that of the previous layer by d=0.15 mm starting from the third layer; the inner-focus dragon lens is subjected to layering treatment by using the arithmetic progression thickness layering method, and the gain of the spherical lens antenna and the inner-focus lens antenna is improved.

The present invention relates to an all-metal dual-polarized Luneburg lens multi-beam antenna, belonging to the technical field of lens antennas. It is characterized by comprising an upper metal plate and a lower metal plate. The surfaces of the upper and lower metal plates are loaded with metal columns of different heights, and a column-loaded metal plate structure is used to control the phase velocity of the vertical polarization mode. In combination with a parallel flat plate waveguide structure, the horizontal polarization mode phase velocity is controlled by controlling the distance between the metal plates. The lens antenna uses 7 groups of waveguide orthogonal mode couplers with adjacent angular spacing of 16° surrounding the lens as a feeding structure to realize dual-polarization feeding. By selecting different feeding ports, dual-polarization beam scanning is realized, which is of great significance to the improvement of the channel capacity and transmission rate of the communication system.

The application discloses a dual-beam lens antenna, a multiple-input multiple-output antenna and a base station. The dual-beam lens antenna comprises a first vibrator unit group and a first lens. The first vibrator unit group comprises a plurality of first vibrator units and at least one second vibrator unit. The plurality of first vibrator units and the at least one second vibrator unit are arranged on the incident end side of the first lens. The plurality of first vibrator units focus corresponding first vibrator beams through the first lens, so as to cover a first position of a target area. The at least one second vibrator unit emits a second vibrator beam to a second position of the target area through the first lens. The first distance between the first position and the dual-beam lens antenna is much larger than the second distance between the second position and the dual-beam lens antenna. The application solves the technical problem that related plate-shaped antennas, lens antennas and the like cannot completely align and cover linear areas.

The invention provides a dual-polarized broadband MIMO antenna, which comprises at least two dual-polarized broadband antennas adjacently arranged on a reflective conductive plate, each dual-polarized broadband antenna comprises a dual-polarized radiation unit, the dual-polarized radiation unit is surrounded by two conductive rings, the two conductive rings are connected through at least two conductive bands, and the conductive bands are connected with the dual-polarized radiation unit. A lens is arranged above the dual-polarized radiation unit; the lens provides the same delay coefficient for any polarized electromagnetic waves propagating parallel to the axis of the lens, and the delay degree of the lens to the electromagnetic waves propagating in the axis direction of the lens is larger than the delay degree of the lens to the electromagnetic waves propagating in other directions. Compared with a conventional antenna, the dual-polarization broadband MIMO antenna has higher gain and lower sidelobe level. The focusing device in the dual-polarized radiation unit and the conductive ring connected through the conductive band can focus electromagnetic waves radiated by the radiation unit to the lens above, so that mutual coupling between adjacent lens antennas is reduced.

The utility model belongs to the field of Luneberg lenses, and discloses a Luneberg lens antenna with an extremely small curved surface porous structure, a Luneberg lens is connected with a feed source, and the feed source is arranged on the periphery of the Luneberg lens, so that the volume of the lens antenna is reduced, the feed source can be directly parallel to the bottom surface of the cylindrical Luneberg lens, and the service life of the Luneberg lens antenna is prolonged. Problems existing in the actual installation process are greatly reduced, and multi-beam scanning can be achieved in the same plane by moving the feed source. According to the technology, based on comprehensive analysis of the performance and lightweight design of the Luneberg lens antenna, the optimal porous structure selection is obtained, and theoretical and technical support is provided for design of other types of Luneberg lens antennas.

The present invention relates to the technical field of lens antennas, and discloses a Luneburg lens antenna and its installation and positioning structure. The Luneburg lens antenna includes a lens housing and a Luneburg lens. The Luneburg lens is installed at the open end of the lens housing. The lens housing is rotatably installed on an adjustment plate and can be driven to rotate by a second driver. The adjustment plate can be tilted on a reference plate to change the main beam direction of the lens antenna. The present invention sets up a multi-level adjustment mechanism. For pitch adjustment, the second driver drives the lens housing to rotate around the adjustment plate to directly adjust the pitch angle of the antenna and change the main beam direction. For tilt leveling, three groups of adjustment rods perform tilt leveling on the adjustment plate through a leveling seat to compensate for mechanical installation errors and ensure the accuracy of beam pointing. For height and pitch linkage, the control sensor links the second driver to automatically adjust the pitch angle, that is, to lower when raising and raise when lowering, to maintain the main beam direction within the set range.

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 application relates to the field of lens antennas, and discloses a wide-angle scanning lens terminal antenna, which comprises a total array composed of a plurality of array elements with the same structure, the array elements comprise corresponding lenses and phased feed source arrays from top to bottom, the phased feed source array is composed of 2N sub-arrays, each of the sub-arrays is composed of N*N antenna units, and N is equal to [2, +infinity]. The application further discloses a scanning mode of the wide-angle scanning lens terminal antenna. The high-gain and large-angle scanning performance of the terminal antenna are realized through the flat-convex lens antenna structure based on the phased feed source; compared with the traditional phased array antenna and the traditional lens antenna, the application has the effects of high flexibility, high gain and large scanning angle.

This application provides a method, apparatus, electronic device, and storage medium for manufacturing a lens antenna. The method includes: determining a first attribute of a first lens and a second attribute of a second lens, wherein the first attribute includes a first chromatic aberration value, and the second attribute includes a second chromatic aberration value; iterating according to a preset initial iteration value, the first chromatic aberration value, and the second chromatic aberration value to update the initial iteration value; and obtaining a first focal length corresponding to the first lens and a second focal length corresponding to the second lens when the initial iteration value is a target value. The lens antenna includes the first lens and the second lens arranged in parallel, and the distance between the first lens and the second lens is determined according to the first focal length and the second focal length. This application provides a method for manufacturing a lens antenna that achieves a wider applicable frequency band for the lens antenna.

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 present application discloses a massive MIMO multi-beam lens antenna system. The massive MIMO multi-beam lens antenna system comprises N columnar lens antenna arrays. Each columnar lens antenna array comprises M sub-columnar lens antennas arranged in the direction of the central axis of a columnar lens, P mechanical driving mechanisms, and K phase shifters. The mechanical driving mechanisms are installed in the columnar lens antenna array, and can drive rotation of the sub-columnar lens antennas to adjust the beam direction in the horizontal plane, thereby enabling horizontal-plane beam scanning of the lens antennas. Meanwhile, the phase shifters are disposed on the sub-columnar lens antennas, and can move vertically along the sub-columnar lens antennas to adjust the beam direction in the vertical plane, thereby enabling vertical-plane scanning of the lens antennas. In this way, a massive MIMO multi-beam lens antenna system capable of performing beam scanning in both the horizontal and vertical planes is achieved.

The invention relates to the technical field of lens antennas, and provides an adjustable liquid crystal metamaterial-based broadband luneberg lens antenna and a control method, the luneberg lens antenna comprises at least ten layers of concentric cubic shells, each layer of concentric cubic shell is formed by splicing a plurality of differential units, and a liquid crystal lens unit is arranged in each differential unit; the dielectric constant gradient distribution of each layer of concentric cubic shell meets a function relationship epsilon (r) = 2-(r / R); and the control module is used for regulating dielectric constants of the liquid crystal lens units and changing dielectric constant distribution by regulating an external electric field, so that the maximum deviation angle of a wave beam is changed, and electromagnetic waves are deflected to a specified direction in the luneberg lens. According to the invention, the dielectric constant is modified through an electric control method, millisecond-level beam scanning is realized, dielectric constant distribution is dynamically reconstructed by adopting a gradient offset method, the sphere symmetry is broken, the electric control offset of the focus position is realized, and the defects of delay and angle limitation of mechanical rotation are effectively overcome.

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.

This application relates to a vortex microwave quantum information transmission system and method. It includes: a vortex microwave quantum feed module for transmitting vortex microwave quanta at a feed location; a reflector-lens antenna combination module for providing differentiated transmission paths for vortex microwave quanta of different modes; an interaction module between the ray tube and the reflector-lens antenna for modeling the ray tube and solving for the time delay of the ray tube in the incident medium to obtain the refractive index of the ray tube; and an information recovery module for mode sorting of vortex microwave quanta of different modes based on their landing regions and for information recovery of the vortex microwave quanta of different modes. Thus, by employing a combination of reflector antennas and lens antennas to achieve mode sorting and complete the information transmission of vortex microwave quanta, the problem of difficult mode sorting of vortex microwave quanta at the receiving end in traditional vortex microwave quantum communication transmission is solved, ultimately achieving efficient and accurate information transmission.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a first measurement report to a network entity which includes a set of beam measurements corresponding to a set of beams of a beam codebook. The network entity may then perform a set of weighted measurement calculations to determine a first serving beam that is different from each of the set of beams of the existing beam codebook. The network entity may then transmit a first serving beam indication that instructs the UE to begin monitoring the first serving beam. The UE may then transmit a second measurement report to the network entity that includes a second set of beam measurements which includes measurements for the first serving beam. The network entity and the UE may then communicate via the first serving beam based on the measurements for the first serving beam satisfying a threshold.