High performance transmission lines using the Spoof Surface Plasmon Polaritons

Abstract

Low-loss and high interference-suppression transmission lines (TLs) are presented in this paper by introducing field confinement in the Spoof Surface Plasmon Polartions (SPPs). By changing the dispersion behavior of SPP mode, the field confinement can be controlled. And the loose confinement of field leads to a lower-loss TL, while the tight confinement leads to a higher interference-suppression one. To verify the design methodology, different types of TLs are simulated, and the results show that SPP TLs have better propagation performance than traditional microstrip TLs.