Fig. 1
From: Metamaterials with asymmetric transmission effect based on magnetic field manipulation

Dimensions and magnetic field of the structure in different views. Loops with different normal directions are connected orthogonally at the split. (a) Dimensions of the structure in view Z; (b) Dimensions of the structure in view X; (c) Magnetic field on x direction in the periodic unit; (d) Magnetic field on y direction in the periodic unit.