Crosstalk analysis of parallel microstrip line using 4-port scattering model

The development in wireless communication indirectly gives impact on complexities of electronics circuit design both in the transmitter and receiver. One of the complexities is PCB trace design. Designer, as one of the considerations, has to estimate crosstalk between trace carefully. This paper proposed a method to estimate crosstalk using scattering matrix. A parallel microstrip line deployed on FR-4 dielectric substrate with ground plane has been modelled and simulated. First scenario, a parallel microstrip line was modelled in straight form. For the second, a parallel microstrip was modelled in bending form. The simulation result shows that crosstalk in term of reflected voltage tend to increase with frequency. But, there was an anomaly, certain frequency give a minimum crosstalk. Crosstalk decrease when the distance between separated lines increased.