Multi-mode reconfigurable orbital angular momentum antenna based on uniform circular array

Abstract

The invention discloses a multi-mode reconfigurable orbital angular momentum antenna based on a uniform circular array, and relates to the technical field of wireless communication; the multi-mode reconfigurable orbital angular momentum antenna comprises a feed network, an antenna array, a feed probe and a coaxial probe, wherein the feed network comprises a first dielectric substrate, a micro-strip circuit printed on the upper surface of the feed network and a grounded metal plate printed on the lower surface of the feed network; the antenna array comprises a plurality of unit antennas arranged above the feed network, wherein the unit antennas are arranged in a uniform and circular mode; the coaxial probe is connected with the input end of the micro-strip circuit, and the feed probe is arranged between the antenna array and the feed network; the upper end of the feed probe penetrates through the first dielectric substrate and is connected with the input end of a feeder line; the lowerend of the feed probe penetrates through the second dielectric substrate and is connected with the output end of the micro-strip circuit, so that the multi-modal reconfigurable characteristic can be realized; and meanwhile, the problems that the adjusting precision is relatively low, and the switching speed between different modes is relatively low due to the existence of mechanical inertia in theprior art are solved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a multi-mode reconfigurable orbital angular momentum antenna based on a uniform circular array. Background technique [0002] With the development of emerging technologies such as mobile Internet, cloud computing, and Internet of Things, as well as the increase in the penetration rate of mobile terminal equipment, the wireless communication capacity has increased rapidly, and the communication system is facing problems such as spectrum resource shortage, insufficient transmission capacity, and communication channel congestion. In order to alleviate the contradiction between limited spectrum resources and expanding wireless communication services, the current solutions include the use of time division, frequency division, space division and polarization multiplexing technologies to improve spectrum utilization, and these technologies have been fully devel...

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Problems solved by technology

[0006] In addition, Li Long and others from Xidian University proposed to use the element antenna to rotate around the coaxial axis to form different phase differences between the array elements to realize the multi-mode OAM mechanical reconfigurability of the array antenna. However, due to the mechanical inertia of the method, As a result, the adjustment accuracy is low and the switching speed between different modes is slow

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