A dual-channel wireless communication system by multiplexing twisted radio wave

In order to make full use of current wireless spectrum, we achieve a dual-channel wireless communication system by multiplexing twisted radio wave. In this system, a big challenge is antenna design to generate and combine twisted radio wave. Therefore, firstly, we propose a stacked antenna to achieve this. Secondly, we set up the dual-channel wireless communication system at 8.3 GHz by adopting the antenna. To our knowledge, this is the first time that a wireless communication system multiplexes two modes of twisted radio wave. The experimental results show that the system doubles the spectrum efficiency and reaches a data speed of 1 Gbps with low bit error rate (<;10^-7).