Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Metasurface based four-beam vortex field Cassegrain lens antenna

A lens antenna and metasurface technology, applied in the field of antenna, communication and radar, can solve the problems of unable to generate vortex field, reduce feeder length, unable to adapt to beam coverage, etc., to achieve the effect of expanding coverage area and realizing feeder length.

Active Publication Date: 2019-04-30
XIDIAN UNIV
View PDF8 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, application publication number CN103036065A, a patent application titled "A Cassegrain-type metamaterial antenna", discloses a Cassegrain-type metamaterial antenna, including a feed source, a reflective element arranged in front of the feed source and The converging metamaterial board is set behind the feed source, and a core layer is added to the converging metamaterial board. By changing the shape of the core layer, the beam convergence is realized. This invention reduces the length of the feeder line, but it cannot generate a vortex field and can only generate a single beam , cannot adapt to the communication field with high beam coverage requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Metasurface based four-beam vortex field Cassegrain lens antenna
  • Metasurface based four-beam vortex field Cassegrain lens antenna
  • Metasurface based four-beam vortex field Cassegrain lens antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. This example includes but is not limited to the following embodiments.

[0032] refer to figure 1 , the present invention includes a lens 1 , a feed source 2 , a reflective surface 3 and a supporting structure 4 .

[0033] refer to figure 2 , the lens 1 adopts a metasurface structure with a hollowed out center, and the waveguide part of the feed source 2 is installed at the hollowed out position, and a Cartesian coordinate system is established with the center hollowed out on the upper surface of the lens 1 as the coordinate origin, and the y-axis is perpendicular to the lens 1 . The reflective surface 3 is fixed on one side of the focal point of the lens 1 through the support structure 4. The metasurface structure includes six first dielectric plates 11 stacked in sequence along the y-axis. The dielectric plates 11 are 0.5mm thick and relative...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a metasurface based four-beam vortex field Cassegrain lens antenna, and is used for solving the technical problem of small coverage area of a vortex field in the prior art. Theantenna includes a lens, a feed source, a reflecting surface and a support structure. The lens is of a central hollow structure, and includes K first medium plates which are stacked in order. A firstpatch array consisting of uniformly arranged metal patches is printed on the surfaces, facing the reflecting surface, of the first medium plates of the odd-numbered layers and the surfaces, facing away from the reflecting surface, of the first medium plate of the last even-numbered layer. A second patch array consisting of uniformly arranged regular cross-shaped metal patches is printed on the surfaces, facing the reflecting surface, of the first medium plates of the even-numbered layers. The reflecting surface includes a second medium plate. Uniformly arranged metal ring patches are printed on one side of the reflecting surface, and metal floor is printed on the other side. The reflecting surface is fixed to one side of a lens focus through the support structure. Four vortex fields of different directions are obtained by dividing the first patch array into multiple rectangular regions with an additional phase difference of 180 degrees between adjacent rectangular regions.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a vortex field metasurface lens antenna, in particular to a metasurface-based four-beam vortex field Cassegrain lens antenna, which can be used in the fields of communication and radar. technical background [0002] The vortex field is an electromagnetic wave beam carrying a helical isophase plane. Due to its good orthogonality, vortex electromagnetic waves can form a large number of same-frequency multiplexing channels, which greatly improves spectrum utilization and communication capacity. [0003] At present, the generation of vortex electromagnetic waves is mainly realized by two devices: array antenna and helical phase plate. Among them, the array antenna arranges the radiating elements in a circle, and each radiating element is externally connected to a different feeding network. By controlling the feeding network to change the initial phase of the radiating element, a sing...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/02
CPCH01Q15/02
Inventor 杨锐顾宸光高东兴高鸣
Owner XIDIAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com