An array antenna for suppressing the divergence angle of vortex electromagnetic wave energy and its application method

A vortex electromagnetic wave and energy divergence technology, which is applied in the directions of separately energized antenna arrays and radiating element structures, can solve the problems of energy divergence angle, limit the long-distance transmission of vortex electromagnetic waves, etc., and achieve long-distance transmission and energy suppression. Effect of Divergence Angle

Active Publication Date: 2021-02-09
CHINA ACAD OF LAUNCH VEHICLE TECH
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Problems solved by technology

[0009] To overcome the defects of the existing technology, an array antenna and its application method for suppressing the energy divergence angle of vortex electromagnetic waves are proposed to solve the problem of energy divergence angle in the process of using the antenna to generate vortex electromagnetic waves, thereby solving the problem of limiting the long-distance transmission of vortex electromagnetic waves Bottleneck problem

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  • An array antenna for suppressing the divergence angle of vortex electromagnetic wave energy and its application method
  • An array antenna for suppressing the divergence angle of vortex electromagnetic wave energy and its application method
  • An array antenna for suppressing the divergence angle of vortex electromagnetic wave energy and its application method

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[0029]The embodiments of the present invention will be described in detail below in conjunction with the drawings.

[0030]When describing OAM eigenmodes with field distribution characteristics, each group of spiral phase distribution combinations corresponds to an eigenstate of orbital angular momentum, which is used to describe the state of OAM eigenmodes. Different eigenvalues ​​correspond to different phase distributions. Eigenmodes. Perform Fourier transform on a signal whose abscissa is time and ordinate is amplitude, and the result of the transformation is called the frequency domain characteristic of the signal. In the same way, Fourier transform is performed on a signal whose abscissa is angle and ordinate is amplitude, and the result of the transformation is called the angular momentum domain characteristic of the signal. When this angular coordinate system is constructed in a plane perpendicular to the electromagnetic wave propagation direction, the angular momentum domain c...

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Abstract

The invention discloses an array antenna for suppressing the divergence angle of vortex electromagnetic wave energy and its application method. The antenna includes: a base and a plurality of antenna elements; the plurality of antenna elements are the same helical antenna installed on the base, and the plurality of antenna elements are equally spaced on the circumference of the coaxial center, so as to A circular array is formed; the radius of the horizontal cross-section of each antenna element is equal to the radius of the circumference.

Description

Technical field[0001]The invention relates to an array antenna for suppressing the divergence angle of vortex electromagnetic wave energy and a use method thereof, belonging to the field of antenna design.Background technique[0002]So far, the use of antennas to generate vortex electromagnetic waves at home and abroad has become the mainstream method in the radio field. At present, the mainstream antenna forms that generate vortex electromagnetic waves include transmission spiral structure, spiral reflection structure and array antenna structure.[0003]Transmission spiral structures include single-step, multi-step and porous spiral phase structures. This method transmits ordinary electromagnetic waves directly through the spiral phase plate, thereby adding a phase factor to make the electromagnetic wave have a twisted wavefront structure to form a vortex electromagnetic wave. The transmission helical structure has a high diffraction efficiency and a simple structure principle, but the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/22H01Q1/36
CPCH01Q1/36H01Q21/22
Inventor 戴昌昊张德智古月陈朝霞刘建妥胡倩曾贵明梁君欧连军常青林川
Owner CHINA ACAD OF LAUNCH VEHICLE TECH
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