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.