Abstract
Abstract: In this work, a FTTL (fishbone-type transmission line) structure was fabricated on PES (polyether sul-fone) for a realization of transparent flexible wireless communication device, and its RF characteristics were investigated. According to the results, the FTTL on PES showed a short wavelength characteristic compared with conventional coplanar waveguide. Concretely, the wavelength of the FTTL was 2.23 mm at 50 GHz, which was 56.6 % of the conventional coplanar waveguide. According to the bandwidth extraction result, the passband of the FTTL on PES was 608 GHz. Unlike conventional periodic structures, the characteristic impedance of the FTTL on PES showed a very low frequency dependency, which means that the FTTL on PES can be used for applica-tion to transmission line and distributed passive components with a broadband operation frequency. Keywords: Flexible wireless communication device, PES (polyether sulfone), FTTL (fishbone-type Transmission Line), RF characteristic, periodic structure.
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