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

Low sidelobe vortex beam generating method based on multi-ring array

A generation method and low sidelobe technology are applied to antenna arrays, devices for manufacturing antenna arrays, antenna arrays that are powered independently, etc., which can solve the problems of reducing the quality of orbital angular momentum communication and increasing the sidelobe gain of vortex beams. Enhanced integrity, reduced beam divergence angle, and improved communication quality

Active Publication Date: 2019-11-12
XIDIAN UNIV
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional generation method is to increase the aperture of the array antenna to suppress the beam divergence angle and reduce the difficulty of receiving modal information. However, the realization of this method also increases the sidelobe gain of the vortex beam and reduces the orbital angle. Momentum Communication Quality

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
  • Low sidelobe vortex beam generating method based on multi-ring array
  • Low sidelobe vortex beam generating method based on multi-ring array
  • Low sidelobe vortex beam generating method based on multi-ring array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:

[0032] refer to figure 1 , the multi-ring array used in the present invention includes N concentric ring-shaped arrays, and the i-th ring-shaped array includes M i Microstrip antenna elements uniformly distributed along the circumference, i=1,2,...,N, N≥2, M i+1 ≥ M i ≥4. This embodiment selects but is not limited to N=2 ring-shaped arrays to form a multi-ring array, and the first ring-shaped array 1 and the second ring-shaped array 2 each include eight microstrip antenna units uniformly distributed along the circumference ,M 1 = M 2 =8, the central operating frequency of each microstrip antenna unit is f=3.9GHz.

[0033] refer to figure 2 , the present invention is based on the multi-ring array low sidelobe vortex beam generation method, comprising the following steps:

[0034] Step 1, determine the parameters for generating the vortex beam. ...

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 low sidelobe vortex beam generating method based on a multi-ring array, and is used for solving the problem that the existing vortex beam generating method suppresses a divergence angle, leading to excessively high sidelobes. The implementation scheme comprises the following steps of determining modal value l generating the vortex beam, a scan parameter Ri(q) of the radiusof the ith annular array, and azimuth excitation Him and position vectors of each of the micro-strip antenna units according to an orbital angular momentum theory; constructing an array factor ci(theta, phi) of the ith annular array by using the determined parameters according to the array antenna theory; constructing a vortex wave pattern function F(theta) according to the principle of electricfield superposition; and determining a scan parameter Ri(q') of the lowest sidelobe power according to F(theta). The low sidelobe vortex beam generating method provided by the invention realizes the generation of low sidelobe vortex beams, enhances the integrity of modal information transmission, improves the communication quality of the orbital angular momentum, and can be used for wireless communication and radar imaging.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a method for generating a low sidelobe vortex beam, which can be used in a communication system. Background technique [0002] With the rapid development of communication technology, expanding the channel capacity of wireless communication has become the main goal to solve spectrum congestion. The modal multiplexing characteristics of vortex beams carrying orbital angular momentum bring broad prospects for channel capacity expansion. In 2007, the team of Prof. B.Thide in Sweden successfully generated vortex beams by means of array antennas, which was the first application in the field of wireless communication. As a result, orbital angular momentum vortex waves have gradually become a research hotspot today. Different from plane waves, the rotation factor carried by vortex waves makes the wavefront characteristic as a spiral phase plane around the transmission axis, and the mod...

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
IPC IPC(8): H01Q21/00H01Q21/29H01Q21/20
CPCH01Q21/0087H01Q21/20H01Q21/293
Inventor 李龙郑雨珊冯强薛皓席瑞邵庆瑶
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