| Summary: | 碩士 === 國立彰化師範大學 === 電信工程研究所 === 100 === This thesis proposes parallel metallic plates integrated with periodic metallic cylinders by our waveguide structure, the bottom layer with the vertical metal walls realized by metal -lic cylinders closely spaced. In this way, a novel coupling structure is proposed, the propa- gation characteristics between double-layer must be investigated.
For enhancing the circular polarized bandwidth of traditional polarized antenna, the thesis utilized the characteristics of enhancing the circular polarized bandwidth with periodic metallic cylinders, by changing the feed port, LHCP to RHCP adjustments can achieved.
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