Strong coupling (crosstalk) between printed microstrip and complementary split ring resonator (CSRR) loaded transmission lines in multilayer printed circuit boards (pcb)

The coupling between a microstrip transmission line (TL) and a complementary split ring resonator (CSRR) loaded TL in a multilayer printed circuit board (PCB) is investigated in this paper. More specifically, how well analytical expressions derived from single cell layout simulations compares with schematic simulations and PCB measurements of a multi-unit cell layout. The power radiating off the PCB was measured as well. This work paves the way for future development of guidelines for reducing the effects of coupling between CSRR loaded TLs and other microstrip TLs.