[18p-Z09-1~14] 3.9 Terahertz technologies

▲ [18p-Z09-12] Propagation loss of metal-coated dielectric parallel-plate waveguide in transverse-electric (TE) mode

〇Yuyuan Huang¹, Kuniaki Konishi², Momoko Deura¹, Yusuke Shimoyama¹, Junji Yumoto², Makoto Kuwata-Gonokami², Yukihiro Shimogaki¹, Takeshi Momose¹ (1.Univ. of Tokyo. Sch. of Eng., 2.Univ. of Tokyo. Sch. of Sci.)

Keywords:terahertz waveguides, propagation loss, required coating film thickness

The propagation loss of metal-coated dielectric parallel-plate waveguide (PPWG) was studied theoretically and experimentally in transverse-electric (TE) mode. The physical model was developed for simulating the loss of metal-coated PPWG from the model for all-metallic PPWG. Film thickness dependence on Au-coated PPWG was studied, and conductivity in the coated metal film was the dominant factor. The derived model can be applied for estimating required film thickness for metal-coated dielectric waveguides at an arbitrary frequency, material, and the distance between plates. It is possible to design a low-loss metal-coated dielectric waveguide based on this study.