The invention discloses a single-reflection double-transmission three-beam included angle metasurface antenna and aims to effectively combine a reflection plane with a lens and implement three-beam directional radiation. The single-reflection double-transmission three-beam included angle metasurface antenna comprises a V-shaped reflection metasurface structure clamped between slab waveguides and afeed source; the tail ends of two arms of the reflection metasurface structure are respectively connected with two transmission metasurface structures to form an included angle metasurface structure;the feed source is fixed outside an aperture face of the included angle metasurface structure and positioned on a central axis of the included angle metasurface structure; the reflection metasurfacestructure comprises a V-shaped matrix board, resonant rings are printed on the lateral surfaces of two arms of the matrix board, which face the feed source, and metal bottom plates are printed on theother lateral surfaces of the two arms of the matrix board; and each transmission metasurface structure comprises four rectangular matrix boards in parallel to each other, the matrix board with the shortest distance to the feed source is connected with the tail ends of two arms of the reflection metasurface structure, spacing between each two matrix boards is equal along a normal direction of thematrix boards, and metal patches are printed on the lateral surfaces of the matrix boards, which face the feed source, wherein gap rings are etched on the centers of the metal patches.

Single-reflection double-transmission three-beam included angle metasurface antenna

The invention provides a beam scanning antenna array based on a liquid crystal high-resistance surface. The beam scanning antenna array comprises an antenna array (1), a high-resistance surface (2), liquid crystals (3), a metal ground (4) and a dielectric plate (5); the antenna array (1) can radiate electromagnetic waves to the outside; the high-resistance surface (2) can control the coupling strength between antenna units of the antenna array (1); the liquid crystal (3) can realize adjustability of an equivalent dielectric constant; the metal ground (4) can bear the antenna array (1), the high-resistance surface (2) and the liquid crystal (3) and provide a grounding signal; and the dielectric plate (5) is used as a substrate and can bear the antenna array (1), the high-resistance surface(2), the liquid crystal (3) and the metal ground (4). The beam scanning antenna array has the advantages of continuously adjustable directional diagram, simple design, low cost and low direct currentpower consumption, and is suitable for an access point antenna.

Beam scanning antenna array based on liquid crystal high-resistance surface

The invention discloses a beam scanning method and device based on virtual array elements. The method comprises the steps: determining the position of a virtual array element according to a preset target expected direction, and selecting an effective array element corresponding to the target expected direction; calculating a spatial phase difference between the effective array element and the virtual array element; configuring the phase compensation of the effective array element according to the spatial phase difference between the effective array element and the virtual array element; and performing beam scanning on a scanning area corresponding to the configured effective array element. By adopting the scheme provided by the invention, the problem of large beam jump in the beam scanningprocess of the arc-shaped array antenna is solved, the beam jump of effective array element beam scanning is reduced, the beam pointing jump interval is reduced, and the main beam intensity in the target expected direction is enhanced.

Beam scanning method and device based on virtual array elements

The invention discloses an electronic control beam scanning antenna based on an active frequency selective surface. The antenna comprises eight active frequency selective surface arrays which are vertically arranged, wherein the active frequency selective surface arrays are sequentially connected together to form a cylindrical body with an octagonal cross section; dielectric plates are respectively arranged at the top and the bottom of the cylindrical body; the dielectric plate is fixedly connected with the cylindrical body through a right-angle bracket; a conical metal dipole feed source is supported to the central position in the cylindrical body by a hard cable penetrating into the cylindrical body from the center of the bottom dielectric plate, and each active frequency selection surface array comprises seven frequency selection surface units which are sequentially connected together from top to bottom. According to the invention, based on the characteristic that the frequency response characteristics of the frequency selective surface units of the diodes in the on state and the off state correspond to reflection and transmission respectively, the on-off state of the diodes ofthe frequency selective surface units on each active frequency selective surface array is adjusted.

Electrically controlled beam scanning antenna based on active frequency selective surface

The invention discloses a PCB integrated electric scanning antenna of a new system. An array, an upper dielectric substrate, a ground layer, a lower dielectric substrate and a power division network layer are sequentially arranged from top to bottom, and the array is formed by arranging a plurality of array elements side by side in parallel; the edge of each array element is provided with a via hole, and the edge of the lower side of each array element is electrically connected with the connecting through hole through a microstrip line; and the power division network layer comprises a power division network and a phase shift assembly, an input port of the power division network is connected with the feed source, and an output port of the power division network is connected to the connecting through hole through an array element phase shift connecting line of the phase shift assembly, a radio frequency switch and a 0/180-degree phase shift circuit. According to the invention, one-dimensional beam scanning can be realized only by controlling the radio frequency switch, the structure is very simple, the cost is low, the sidelobe characteristic is low, and the application of microwaves, especially millimeter wave frequency bands, is facilitated.

PCB integrated electric scanning antenna of new system

The invention discloses an electrical scanning lens antenna based on a multilayer conformal Fresnel surface. The lens antenna is mainly composed of an antenna feed source and a multilayer conformal surface. The antenna feed source is located at the center of the multilayer conformal surface. The multilayer conformal surface surrounds the antenna feed source to form a cylindrical shape. The multilayer conformal surface is mainly composed of multilayer conformal surface units which are closely arranged. Each multilayer conformal surface unit is composed of stacked single frequency selective surface layers. The frequency selective surface is a curved arc surface. In the frequency selective surface, a dielectric substrate is a curved plate, a double I-shaped interdigital structure is disposedat the center on the surface of a side of the dielectric substrate, and the two interdigitated metal in the double I-shaped interdigital structure are connected by a varactor diode. The electrical scanning lens antenna controls the frequency compensation function of the frequency selective surface to form a Fresnel phase compensation diffraction fringe, and performs behavior modulation on the electromagnetic wave emitted by the antenna feed source to achieve an omnidirectional scanning function.

Electrical scanning lens antenna based on multilayer conformal Fresnel surface

The invention discloses a novel tunable high-gain antenna reflector plate The novel tunable high-gain antenna reflector plate is mainly composed of two antenna reflector plates placed in a V shape and an antenna placed in front of the two antenna reflector plates, wherein the antenna is placed in front of the antenna reflector plates in the V shape, and signals are reflected through the antenna reflector plates so as to promote the gain of the signals received by the antenna; the antenna reflector plate is formed by combing and arranging a plurality of tunable structure units in an array, each tunable structure unit is mainly composed of a square metal copper sheet, a dielectric plate, a dielectric film, a dielectric plate and an earth plate which are laminated and arranged vertically in sequence, dielectric films of the two dielectric plates are replaceable dielectric film layers for finely tuning working frequency, the square metal copper sheet faces the antenna, and the earth plate is at the back of the antenna According to the novel tunable high-gain antenna reflector plate, the gain of the wireless communication antenna can be promoted, the directionality of the antenna is improved, simultaneously the reflector plate has the characteristics of low cost and simple structure, and the reflector plate can be widely applied to indoor and outdoor wireless communication antenna equipment

Novel tunable high-gain antenna reflector plate

The invention discloses a reconfigurable artificial surface antenna with three freedom degrees. The antenna mainly consists of resonant units of the same structure, and each resonant unit comprises asquare dielectric slab, a copper piece structure and a variable capacitance diode, wherein the copper piece structure and the variable capacitance diode are disposed on the dielectric slab. The copperpiece structure comprises two H-shaped piece structures and an interdigital structure located between the two H-shaped piece structures. The resonant units are periodically extended in a second direction, and the H-shaped piece structures on the adjacent resonant units are correspondingly connected to form a resonant unit group. A plurality of resonant unit groups are periodically extended in a first direction, thereby forming a reconfigurable artificial surface. The type of the variable capacitance diode is SMV1234, and the variable capacitance diode works in a reverse bias state. The antenna achieves the simultaneous reconfiguration of wave beam width, instant working band and scanning angle through applying different voltages to two ends of the resonant units, and is large in variableamplitude of reconfiguration.

Reconfigurable artificial surface antenna with three freedom degrees

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Electrical scanning lens antenna based on multilayer conformal Fresnel surface

Novel tunable high-gain antenna reflector plate

Reconfigurable artificial surface antenna with three freedom degrees

PCB integrated electric scanning antenna of new system