Multi-modal orbital angular momentum (OAM) vortex electromagnetic wave microstrip array antenna

A vortex electromagnetic wave, microstrip array technology, applied in the field of antennas, can solve the problems of low utilization rate and energy efficiency, sustainable development of radio technology, insufficient spectrum utilization, low utilization rate of authorized spectrum, etc., to improve spectrum utilization and system. The effect of capacity

Inactive Publication Date: 2015-11-18
NINGXIA UNIVERSITY
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Problems solved by technology

However, traditional command-and-control spectrum strategies lead to significant spectrum underutilization, and licensed spectrum is currently

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  • Multi-modal orbital angular momentum (OAM) vortex electromagnetic wave microstrip array antenna
  • Multi-modal orbital angular momentum (OAM) vortex electromagnetic wave microstrip array antenna
  • Multi-modal orbital angular momentum (OAM) vortex electromagnetic wave microstrip array antenna

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[0022] The present invention will be further described below with reference to the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for ease of description, the drawings only show a part but not all of the content related to the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terminology used in the specification of the present invention herein is only for the purpose of describing specific embodiments, and is not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more related listed items.

[0023] Please refer to Figure 1 to Figure 4 As shown, the multi-mode OAM vortex electromagnetic wa...

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Abstract

The invention discloses a multi-modal orbital angular momentum (OAM) vortex electromagnetic wave microstrip array antenna. The antenna comprises a medium substrate, a plurality of array elements, and coaxial feeders and input ports which are corresponding to the array elements. The array elements employ circularly polarized square corner cut patch antennas with truncated corners, the array elements are circumferentially arranged at one surface of the medium substrate at equal distances, a metal thin layer is attached to the other surface of the medium substrate as a grounding surface, and the input ports are connected with the corresponding array elements through the coaxial feed lines. According to the invention, vortex electromagnetic waves with multiple OAM modes are generated simultaneously at one frequency point, and the multi-modal OAM vortex electromagnetic wave microstrip array antenna is suitable for wireless communications such as currently most popular Wi-Fi, ZigBee, Bluetooth and the like. The vortex electromagnetic waves which are good in performance and have dual features of OAM and circular polarization can be generated, the vortex electromagnetic waves are used for multiplexing, multiple coaxial data flows can be sent in one individual channel, and the frequency spectrum utilization rate and the system capacity can be improved to the maximum degree under the condition that the bandwidth is not increased.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a multi-mode OAM vortex electromagnetic wave microstrip array antenna. Background technique [0002] According to the classical electrodynamic theory, electromagnetic radiation can carry energy and angular momentum at the same time. Angular momentum is composed of spin angular momentum (Spin angular momentum, SAM) describing the polarization state and orbital angular momentum (Orbital angular momentum, OAM) describing the helical phase structure. The spin angular momentum is related to the spin of the photon, showing a form of circular polarization. Poynting predicted the existence of SAM in the early 20th century, but it was not widely used until Beth passed the experimental verification in 1936, while OAM is It is related to the spatial distribution of photons. In 1838, Airy discovered that an abnormal halo formed on the focal plane of the lens; in 1967, Boivin et al. analyze...

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q21/20
Inventor 孙学宏李强庞丹旭刘丽萍张旋
Owner NINGXIA UNIVERSITY
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