A Crosstalk Study on Metamaterial-Inspired Substrate Integrated Waveguides

Substrate Integrated Waveguide (SIW) is a well-established technology in the mm-wave frequency range with several related applications of mm-wave components and antennas. Recently, the Broadside-Coupled Complementary Split-Ring Resonator SIW (BC-CSRR SIW) has been proposed as an alternative to the classical SIW design, utilizing printed resonant metamaterials instead of metallic vias. In this work we explore the wave confinement capability of the BC-CSRR SIW through numerical crosstalk studies. A parametric study is carried out for the minimization of leakage losses, followed by a numerical calculation of crosstalk between adjacent waveguides. BC-CSRR SIW results are compared with the classical SIW configuration exhibiting equivalent behavior.