In order to study the THz waves asymmetric transmission characteristics of artificial electromagnetic metamaterials,a metamaterial was designed and constructed in the form of a bilayered continuous U-shaped structure.Its THz waves asymmetric transmission characteristics were then analyzed using finite element simulation. The results show that the asymmetric transmission coefficient can reach 0. 77 at around 2. 9 THz,with good asymmetric transmission characteristics in the THz waves frequencies. Furthermore,...