Figure 6 TL-shaped DMS structure and its parameters

SIMULATION AND ANALYSIS OF EM

Crosstalk is mainly caused by the EM field radiated by the attack line to the space around the injured line, which produces the disturbing current on the injured line. In accordance with the defect ground structure (DGS), the proposed DMS is a periodic or aperiodic defect structure that is etched on the transmission line [14]. When some metals are removed from the microstrip line according to the designed DMS shape, the loss of this part will change the EM distribution between the coupled microstrip lines and affect the coupling crosstalk. The ability of DMS to suppress crosstalk can be judged by EM simulation,therefore, in order to analyze the effect of TL-shaped DMS to suppress crosstalk between coupled microstrip lines, the full-wave EM simulation of the above model is carried out, and the simulation results are shown in Figure 7.