Study On Microstrip Structures Emc In Fdtd Method

The crosstalk of microstrip structure on the PCB using the time-domain finite-difference method have been studied in this dissertation. Treat the microstrip structure as the network with N ports of which the S parameter have been calculated.The valuable demo for designing the rf PCB have been provided in this dissertation.The microstrip structure including microstrip line,strip line,parallel microstriplines and patch antenna fed by microstrip has been calculated using time-domain finite-difference method with the boundary condition PML to absorpt the electromagnetic energy.Also some lumped elements like resistance,inductors, capacitors, diodes have been joined into the network.This study shows that it is an cutting-edge and exploratory research by contrast to the situation of study in the world. Firstly,the finite difference time domain method and several concept of EMC was introduced.Then the crosstalk between microstrip transmission line, the crosstalk between microstrip transmission line with several lumped elements, crosstalk between microstrip transmission line and the strip transmission line as well as cross-talk between microstrip transmission line and pacth antenna fed by microstrip line. The results of this method based on time-domain finite-difference method is closely to the results calculating by HFSS and CST,which proved that the work of this dissertation is right and effective.