9 results about "Microstrip array" patented technology

The invention belongs to the technical field of wireless communication, and aims to solve the problems that most of existing direct-injection type flexible film antennas are two-dimensional planar microstrip arrays, the working bandwidth is narrow, traditional gluing precision is low, the position is difficult to adjust, a large-aperture antenna is inconvenient to transport and erect, and the requirement for light weight of a UHF-band high-gain large-size antenna of a floating platform is difficult to meet. The invention provides a large-size flexible array antenna capable of being repeatedly disassembled and assembled through hook-and-loop fasteners. The large-size flexible array antenna comprises a top-layer flexible film, a radiation dipole vertical film, a bottom-layer flexible film, an assembly truss and a light-weight framework. The top layer and the radiation dipole are vertical, the joint of the bottom layer flexible film and the light-weight framework is connected with a back adhesive magic tape, and the assembly truss is connected in series with the light-weight framework. Light weight of the UHF-band large-size antenna is achieved so as to adapt to a floating platform, repeated three-dimensional disassembly and assembly can be achieved through the hook-and-loop fasteners, transportation and erection are facilitated, meanwhile, high gain and impedance matching performance of the antenna are guaranteed, and a reliable scheme is provided for the low-band high-gain antenna.

The invention relates to the field of antennas, and particularly discloses a dual-polarized antenna, which comprises a slot antenna layer for radiating a first polarized wave and a microstrip antenna layer for radiating a second polarized wave, wherein the slot antenna layer comprises a waveguide structure, the waveguide structure comprises a plurality of radiation units arranged along a first direction, and each radiation unit comprises a plurality of radiation slots extending along a second direction; the micro-strip antenna layer comprises a plurality of micro-strip oscillator units arranged along a first direction, and each micro-strip oscillator unit comprises a plurality of micro-strip oscillators arranged along a second direction; the microstrip antenna layer is arranged on the slot antenna layer, at least one microstrip array unit is arranged between the radiation units, and projections of the microstrip arrays and the radiation slots on the waveguide structure are not overlapped; the antenna is simple in structure, has the characteristics of low profile, miniaturization and light weight, can obtain the electromagnetic scattering characteristics of a target in different polarization directions, and is suitable for a high-frequency dual-polarized antenna.

An OSC material may include a grating structure for use in waveguide applications. A method of patterning the OSC material to create the grating structure may include forming a hard mask over the OSC layer and etching the OSC layer through an opening in the hard mask. Furthermore, an improved design of a grating light valve device may include a reflective backplane, an array of micro-ribbons disposed on the reflective backplane, and a metasurface structure positioned beneath the array of micro-ribbons. A multiple stage process may include generating a broad spectrum of light from a laser architecture, filtering and multiplexing the wavelengths of light using an image optimization module, and incoherently averaging the speckle patterns across the various wavelengths using a spatial light modulator architecture.

This application provides a microstrip array base station antenna, belonging to the field of antenna technology. The microstrip array antenna includes at least two radiating elements and a feeding network. The feeding network includes a substrate integrated waveguide resonant cavity, which generates a non-uniformly distributed electric field under external excitation. At least two output connectors are respectively connected to different electric field strength positions of the substrate integrated waveguide resonant cavity to output at least two in-phase output signals. The output connectors are correspondingly arranged with the radiating elements, and the preset power allocation ratios of the at least two output signals are different. A coupling element is disposed between the feeding network and the at least two radiating elements, and the coupling element is configured to electromagnetically couple the output signals to the radiating elements to excite them. The microstrip array antenna provided in this application has a simple feeding network structure, high integration, and can flexibly and accurately realize different power allocations across multiple ports.

The invention discloses a high-precision positioning method based on polarization-airspace joint nulling and related equipment, and the method comprises the steps: employing a polarization-airspace joint nulling multipath suppression method, receiving original signals of a plurality of satellites at the same time through a dual-polarization four-array-element microstrip array, carrying out the processing of the original signal of each satellite through a polarization-airspace joint nulling algorithm, and carrying out the processing of the original signal of each satellite through a dual-polarization four-array-element microstrip array. Therefore, an observed value after suppression is obtained, and multi-path interference is effectively suppressed; the inhibited observation value is sent to an RTK engine for double-difference residual error and floating point ambiguity solution, ambiguity fixation judgment is carried out according to the floating point ambiguity solution, if ambiguity fixation succeeds, positioning is carried out through the RTK engine, and positioning coordinates and a fixed state are output; and if ambiguity fixation fails, the polarization threshold and the nulling depth are adjusted, and the polarization-airspace joint nulling algorithm processing is carried out by using the adjusted polarization threshold and nulling depth, so that closed-loop control is formed.

The invention discloses a ground base station hemispherical array antenna design applied to low-altitude airspace communication, and belongs to the technical field of low-altitude communication antennas. The antenna adopts a hemispherical layout and is formed by splicing a plurality of directional antennas according to a spherical angle, so that 360-degree whole-airspace dead-angle-free coverage of an upper hemisphere is realized; a single side adopts an 8 * 2 microstrip array, a dual-polarization orthogonal design and Wilkinson power division feed, a 4G / 5G mainstream frequency band is covered, the gain is 18dBi, and the communication distance is not less than 5 kilometers. The base station solves the problems that a traditional base station is close in air coverage, incomplete in coverage and difficult to access a public network, has the advantages of full-airspace coverage, high gain, long distance, low cost and low power consumption, is adaptive to the scenes of low-altitude supervision, unmanned aerial vehicles, low-altitude logistics and the like, and can be widely applied to deployment of a new-generation low-altitude communication ground base station.

The application discloses a ground base station multi-surface array antenna design applied to low-altitude airspace communication and belongs to the technical field of low-altitude communication antennas. The antenna adopts five-surface directional array surface combination, the beam width of a single array surface is 60 degrees, and full airspace coverage is realized through cooperation of two groups of three-surface arrays; a single surface adopts 8*2 microstrip array, dual-polarization orthogonal design and Wilkinson power division feeding, covers 4G / 5G mainstream frequency bands, has a gain of 18dBi, and a communication distance is not less than 5 kilometers. The application solves the problems that a traditional base station has a short coverage distance, is not fully covered, and is difficult to access a public network, has the advantages of full airspace coverage, high gain, long distance, low cost and low power consumption, is suitable for scenes such as low-altitude supervision, unmanned aerial vehicles and low-altitude logistics, and can be widely used in deployment of new-generation low-altitude communication ground base stations.

This application discloses a microwave wireless power transfer device and its design method. The device includes: a microstrip array feed source, comprising a feed network unit and four rectangular microstrip patch units arranged in a 2×2 array. The feed network unit is used to excite the four rectangular microstrip patch units with equal amplitude and in phase. The microstrip array feed source is used to radiate electromagnetic waves. A transmission-focusing metasurface array includes multiple metasurface units arranged in an 11×11 array. Each metasurface unit includes, from top to bottom, an upper complementary square resonant unit, an upper dielectric substrate, a middle complementary square resonant unit, a lower dielectric substrate, and a lower complementary square resonant unit. The transmission-focusing metasurface array is used to control the phase distribution of the electromagnetic waves radiated by the microstrip array feed source to achieve focusing. A support member is also included. This application can stably achieve near-field focusing and energy convergence.

This invention provides a terahertz circularly polarized antenna array, comprising a waveguide feeding network and a microstrip array. The waveguide feeding network includes a feeding waveguide, a sequential rotating feeding network, and a subarray feeding network. The sequential rotating feeding network includes four branches arranged in a swastika shape and is equipped with a wedge structure for evenly distributing the energy transmitted from the feeding waveguide to the four branches and achieving impedance matching at the input ports. Each branch is connected to a subarray feeding network. The microstrip array includes a dielectric substrate with a first metal layer and a second metal layer disposed on opposite sides. Rotationally arranged slot combinations are disposed on the first metal layer corresponding to the positions of each branch. A microstrip patch antenna array is disposed on the second metal layer. This invention employs a hybrid feeding scheme, combining the waveguide feeding network and the microstrip array to achieve array feeding, and introducing sequential rotating feeding technology, which has the advantage of wide bandwidth.