Leakage-loss characteristics of conductor-backed coplanar waveguide with air-gap-spacing (AGS) dielectric sheets

Creators Hotta Masashi

Creators Moriyama Kouji

Creators Hano Mitsuo

Low leakage-loss Conductor-Backed Coplanar Waveguide with air-gap-spacing (AGS) dielectric sheets has been already proposed based on the calculation with the hybrid 2D-FDTD analysis and the curve-fitting procedure. The leakage-loss characteristics of CBCPW with AGS dielectric sheets have been calculated in detail by using the much fine Yee cells. From the numerical results, the low leakage-loss characteristics and the existence of the optimum width for the air-gap have been certainly confirmed. In this paper, we have focused on the relationship between the leakageloss and the permittivity of their additional dielectric sheets. From these analytical results, we have tried to find out what structure of CBCPW with AGS dielectric sheets is effective for the leakage-loss reduction.

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