The recent researches on vortex beam multimode integration and dynamic regulation are summarized in this article.Starting from the passive metasurface lens,utilizing the comprehensive control effect of propagation phase and geometric phase,fractional modes of vortex beam with high-purity is realized on a single metasurface platform.Furthermore,based on the theory and method about multimode vortex beam integration by using passive metasurfaces,active tunable electromagnetic devices such as varactors are loaded into the metasurface unit cell to adopt dynamic switching and manual regulation of vortex beams.On this basis,a theoretical analysis and evaluation of the performance of vortex communication systems based on metasurface is conducted through channel modeling,laying a theoretical foundation for improving the channel capacity and information transmission rate of modern communication systems.
关键词
微波超表面/涡旋波束/多模式OAM集成/可重构调控/OAM通信
Key words
Microwave metasurface/Vortex beam/Multi-mode OAM integration/Reconfigurable regulation/OAM wireless communication
维普
万方数据