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Multi-feed-source common-caliber multi-mode orbital angular momentum vortex electromagnetic wave multiplexing generation method

An orbital angular momentum, vortex electromagnetic wave technology, applied in the field of radio frequency, can solve the problems of low aperture utilization, inability to realize common aperture multi-mode OAM vortex electromagnetic wave multiplexing, etc. Effect

Active Publication Date: 2021-12-31
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It divides the front aperture into four areas, and uses four feed sources to radiate the four areas. Although this method can achieve multi-mode OAM vortex beam multiplexing, it cannot realize different OAM modes in one aperture in the true sense. State vortex wave multiplexing is generated, so its aperture utilization rate is low
[0005] In summary, none of the existing technical means can realize the multiplexing of common-aperture multi-mode OAM vortex electromagnetic waves

Method used

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  • Multi-feed-source common-caliber multi-mode orbital angular momentum vortex electromagnetic wave multiplexing generation method
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  • Multi-feed-source common-caliber multi-mode orbital angular momentum vortex electromagnetic wave multiplexing generation method

Examples

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Embodiment 1

[0031] Embodiment 1, the method of realizing two-feed common-aperture hybrid multi-mode OAM vortex electromagnetic beam multiplexing

[0032] refer to figure 1 , the implementation steps of this example include the following:

[0033] Step 1. Determine the number of feed sources k 0 , orbital angular momentum mode l i , feed location information (f xi , f yi , f zi ), in the spherical coordinate system, the beam direction of the outgoing wave is where i=1,2,3...k 0 .

[0034] This example includes but is not limited to determining the number of feed sources 2, the orbital angular momentum mode 1 1 = 1, l 2 =2. In the spherical coordinate system, the beam direction of the outgoing wave is (0,0); the two feed horns are symmetrically distributed in the XOZ plane, and the included angle with the Z axis is α=40°. The two feed horns The distance between the source horn and the origin of the coordinate center is 300mm, and the position of the corresponding feed horn (f xi...

Embodiment 2

[0059] Embodiment 2, the method for realizing four-feed common-aperture hybrid multi-mode OAM vortex electromagnetic beam multiplexing

[0060] refer to figure 1 , the implementation steps of this example include the following:

[0061] Step 1, determine the number of feed sources k 0 , orbital angular momentum mode l i , feed location information (f xi , f yi , f zi ), in the spherical coordinate system, the beam direction of the outgoing wave is where i=1,2,3...k 0 .

[0062] This example includes but is not limited to determining the number of feed sources 4, the orbital angular momentum mode l 1 = 1, l 2 = 2, l 3 = 3, l 4 =4. In the spherical coordinate system, the beam direction of the outgoing wave is (0,0); two of the feed horns are symmetrically distributed in the XOZ plane, and the other two are symmetrically distributed in the YOZ plane. Four The included angle between the feed source and the Z axis is α=40°, the distance between the four feed horns and ...

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Abstract

The invention discloses a multi-feed-source common-caliber multi-mode orbital angular momentum vortex electromagnetic wave multiplexing generation method, and mainly solves the problems that multi-feed-source OAM vortex electromagnetic wave multiplexing cannot be realized and the caliber utilization rate is low in the prior art. According to the scheme, the method comprises: determining relevant parameters of a feed source; calculating the compensation phase of each array unit when the reflection-type artificial electromagnetic surface array points to the determined emergent wave beam; designing an array unit of the reflective artificial electromagnetic surface; controlling the degree of freedom of the array unit to enable the reflection phase to be equal to the compensation phase; establishing a multi-mode OAM vortex electromagnetic wave multiplexing generation model of the multi-feed-source common-caliber reflection type artificial electromagnetic surface to generate multi-mode OAM vortex electromagnetic waves; and realizing multiplexing generation of the multi-mode OAM vortex electromagnetic waves by controlling on-off of each feed source. According to the method, a compensation phase calculation formula is constructed based on the orthogonality characteristic between different OAM modes, the antenna aperture utilization rate and the channel capacity of a communication system are improved, and the method can be used for wireless communication.

Description

technical field [0001] The invention belongs to the field of radio frequency technology, and further relates to a method for generating a multi-mode orbital angular momentum vortex electromagnetic beam, which can be used for wireless communication. Background technique [0002] With the development of modern communication, the demand for large-capacity and high-speed communication in the communication network is also increasing. Due to the infinite-dimensional orthogonality between different modes, vortex electromagnetic waves carrying OAM have greater advantages in increasing the information transmission capacity of communication systems than traditional communication technologies. An important application direction of OAM vortex electromagnetic waves in the field of wireless communication is to improve the communication capacity and communication rate of communication systems through the multiplexing transmission of multiple OAM modal vortex beams. [0003] In the 2017 ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00H01Q13/02H01Q3/30G06F30/20
CPCH01Q21/0006H01Q13/02H01Q3/30G06F30/20Y02D30/70
Inventor 李龙冯强乐舒瑶林屹峰单明明孔旭东王之鼎李锐杰
Owner XIDIAN UNIV