Research And Design Of Resonator Antenna Based On Orbital Angular Momentum

The rapid development of wireless communication technology has caused the problem of the spectrum resource poor increasingly serious.In order to improve the system capacity and the spectrum efficiency,the revolutionary innovation technology is needed.In recent years,the application of orbital angular momentum(OAM)technology in wireless communication has gradually become a hot research.This dissertation focuses on the design of resonator antennas for orbital angular momentum wireless communication,as well as ways to increase gain and expand bandwidth.The main work is as follows:Firstly,a brief overview of the research status of orbital angular momentum at home and abroad is made.The basic knowledge about orbital angular momentum is introduced,as well as ways to increase gain and expand bandwidth,which laid the theoretical foundation for the follow-up research.Secondly,an antenna based on orbital angular momentum mode multiplexing is designed.Based on the dielectric resonator,the designed antenna can generate two different OAM modes at the same frequency by nested dielectric resonant ring,OAM mode multiplexing is realized in wireless band.Finally,based on the previous theoretical foundation,four broadband and high-gain OAM antennas are designed for the patch antenna and circular traveling wave antenna.L-type probe feed,double-layer structure,electromagnetic band gap(EBG)structure and Fabry-Perot resonator are used respectively.The above antenna structures are simulated and analyzed.Compared with the original structures,the bandwidth and gain are greatly improved.