Array Antenna for Generating Dual-Mode Vortex Electromagnetic Fields

An array antenna and electromagnetic field technology, applied in the field of array antennas, can solve the problems of inability to multiplex multiple modes and low utilization of array apertures, and achieve the effects of improving aperture utilization, compact structure, and increasing operating frequency bandwidth.

Active Publication Date: 2019-11-15
XIDIAN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Although the array antenna formed by this method has high gain, low cross-section, and is easy to be conformal, the array antenna can only generate a single-mode vortex electromagnetic field, and cannot multiplex multiple modes at the same time. lower

Method used

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  • Array Antenna for Generating Dual-Mode Vortex Electromagnetic Fields
  • Array Antenna for Generating Dual-Mode Vortex Electromagnetic Fields
  • Array Antenna for Generating Dual-Mode Vortex Electromagnetic Fields

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Embodiment Construction

[0028] Embodiments of the present invention are described in further detail below in conjunction with accompanying drawings:

[0029] refer to figure 1 , the present invention is mainly composed of 8 array units T, feeding network K, dielectric substrate J, coaxial probe D and metal floor G, and the 8 array units T and feeding network K are all printed on the dielectric substrate J On the surface, the metal floor G is printed on the lower surface of the dielectric substrate J, and the coaxial probe D passes through the metal floor G and the dielectric substrate J in turn, and is connected to the input port of the feeding network K, where:

[0030] The metal floor G adopts copper plate.

[0031] The dielectric substrate J is made of epoxy resin, the dielectric constant of this material is 4.2, the thickness of the dielectric substrate J is 5mm, and the length and width are both 500mm.

[0032] The array units T all use H-shaped patches, and the length L of each unit is 0 =70...

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Abstract

The invention discloses an array antenna for producing a dual-mode vortex electromagnetic field, and mainly aims to solve the problem that the vortex electromagnetic field produced has a single mode and the utilization ratio of array aperture is low in the prior art. The array antenna comprises eight array units (T), a feed network (K), a dielectric substrate (J), a coaxial probe (D), and a metal floor (G). The eight array units (T) and the feed network (K) are printed on the upper surface of the dielectric substrate (J). The metal floor (G) is printed on the lower surface of the dielectric substrate (J). The feed network (K) is provided with an input port and eight output ports. The input port is connected with the coaxial probe (D) to realize feeding of the coaxial probe (D) to the feed network (K). The eight output ports are correspondingly connected with the eight array units (T) to realize feeding of the feed network (K) to the array units (T). The array antenna can produce two modes of vortex electromagnetic wave, and can be used at the front end of a wireless communication system.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to an array antenna for generating dual-mode vortex electromagnetic fields, which can be used in wireless communication systems, satellite communication systems and radar detection. Background technique [0002] Vortex electromagnetic waves are a type of electromagnetic waves different from ordinary plane waves. Plane waves only have spin angular momentum, while vortex electromagnetic waves not only have spin angular momentum, but also orbital angular momentum. It is distributed in a helical shape, which is different from the equiphase plane of the plane wave. Vortex electromagnetic waves can have different mode numbers l, and different l represents different degrees of vortex. In theory, l has infinitely many values, and different modes are orthogonal to each other. This feature provides an ideal development direction for improving spectrum utilization and channel capacity. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q21/29H01Q21/00
CPCH01Q1/38H01Q1/50H01Q21/0006H01Q21/29
Inventor 朱诚徐鹏黄琪贾晋晓郭翀梁昌洪
Owner XIDIAN UNIV
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