SIW ring slot antenna generating dual-mode OAM vortex electromagnetic waves

Abstract

The invention belongs to the technical field of wireless communication, and discloses a SIW ring slot antenna generating dual-mode OAM vortex electromagnetic waves. The cross section of the SIW ring slot antenna is a circular cross section, and the center of circle is O. The SIW ring slot antenna is composed of an upper metal surface, an intermediate dielectric substrate and a lower metal surface.The SIW ring slot antenna is provided with multiple metalized through holes, a ring radiation slot and three feed coaxial probes which are arranged from outside to inside in turn. Multiple metalizedthrough holes are uniformly arranged along the circumference. The ring radiation slot is etched on the upper metal surface. The three feed coaxial probes are three solid metal columns which are uniformly distributed in the internal side of the ring radiation slot along the circumferential direction. According to the SIW ring slot antenna, the design of the complex feed network can be avoided, thesize of the antenna can be reduced and the compactness and the degree of integration of the antenna can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a SIW (Substrate Integrated Waveguide, Substrate Integrated Waveguide) annular slot antenna for generating dual-mode OAM vortex electromagnetic waves. Background technique [0002] With the vigorous development of wireless communication technology, the popularity of smart terminals and the rapid development of mobile Internet applications, more and more mobile devices are put into use, which has led to the limit of spectrum utilization and channel capacity. [0003] In order to solve this contradiction, various channel multiplexing technologies have emerged in the past ten years, from 1G frequency division multiplexing, 2G time division multiplexing, 3G space division multiplexing to 4G orthogonal frequency division multiplexing, These technologies have gradually matured. Nevertheless, the contradiction between capacity demand and spectrum resource sho...

AI Technical Summary

Problems solved by technology

However, both the first two methods face great challenges - they are bulky and difficult to fabricate

This is unacceptable for highly integrated mobile communication devices in the future

The third circular phased array antenna is a suitable way because it is easy to generate multi-order OAM modes, but its array design and feed network design are the biggest problems at present

Because in order to realize the vortex electromagnetic wave, it is necessary to select a suitable array radius (0.5λ~1.5λ), and to wedge into the feed network, which will seriously affect the design of the array

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