Multimodal OAM electromagnetic vortex wave array antenna in double-ring structure

The invention discloses a multimodal OAM electromagnetic vortex wave array antenna in double-ring structure, comprising a dielectric substrate, several array elements and coaxial feeders and input ports corresponding to the respective array elements. The array element adopts the microstrip patch antenna and each of the array element is arranged uniformly on the side of the dielectric substrate along the circumference at the respective set intervals. The other side of the dielectric substrate is the ground plane. And the input port is connected to the corresponding element through the coaxial feeder.The antenna can realize the electromagnetic vortex wave of the OAM mode at the same frequency and the OAM electromagnetic scroll is used for multiplexing. Many coaxial data streams can be transmitted simultaneously on a single channel, which can enhance the system capacity and improve the wireless communication spectrum efficiency. The invention can effectively improve the quality of the electromagnetic scroll sign