| Presentation | 2016-05-20 Study on Evaluation of Composite Electromagnetic Wave Absorbers with Two-layers Structure made of Sendust Partcle Dispersed in Polystyrene Resin Seiki Umemoto, Takumi Kubota, Takahiko Yoshida, Yuki Satou, Shinzo Yoshikado, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The development of an electromagnetic wave absorber suitable for these new devices is required, especially at frequencies above several GHz. In the previous study, we have reported that the composite made of sendust (Fe-Si-Al) and polystyrene resin can be used as an broadband absorber at frequencies above several GHz. To broaden the absorption frequency bandwidth, it is important to ascertain that the non- reflective condition is satisfied in the desired frequency range when designing an absorber. The maximum normalized −20 dB absorption bandwidth for the composite containing the spherical sendust particles with average 3.5-μm particle size was approximately 29% for V ≈ 20 vol%, which is much larger than that of a commercially available absorber (less than approximately 10%)..In order to commercialize the composites made of sendust particle dispersed in polystyrene resin, it is necessary to improved absorption bandwidth. In this study, to improve the absorption frequency bandwidth, the two-layered electromagnetic wave absorber is designed in the frequency range up to 2.5-18GHz. Frequency characteristics of the return loss were calculated from the value of the complex relative permeability μr * and the complex relative permittivity εr *.A comparison was made of the actual measured value and the calculated value . As a result , consistent trend was confirmed . |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Electromagnetic Wave Absorber / Sendust particle / Return Loss |
| Paper # | MW2016-23 |
| Date of Issue | 2016-05-12 (MW) |
| Conference Information | |
| Committee | MW |
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| Conference Date | 2016/5/19(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kyoto Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave Technologies |
| Chair | Yohei Ishikawa(Kyoto Univ.) |
| Vice Chair | Masashi Nakatsugawa(NTT) / Takao Kuki(Kokushikan Univ.) / Kenjiro Nishikawa(Kagoshima Univ.) |
| Secretary | Masashi Nakatsugawa(NTT) / Takao Kuki(Panasonic) / Kenjiro Nishikawa |
| Assistant | Ryo Ishikawa(Univ. of Electro-Comm.) / Naoto Sekiya(Univ. of Yamanashi) |
| Paper Information | |
| Registration To | Technical Committee on Microwaves |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on Evaluation of Composite Electromagnetic Wave Absorbers with Two-layers Structure made of Sendust Partcle Dispersed in Polystyrene Resin |
| Sub Title (in English) | |
| Keyword(1) | Electromagnetic Wave Absorber |
| Keyword(2) | Sendust particle |
| Keyword(3) | Return Loss |
| 1st Author's Name | Seiki Umemoto |
| 1st Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 2nd Author's Name | Takumi Kubota |
| 2nd Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 3rd Author's Name | Takahiko Yoshida |
| 3rd Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 4th Author's Name | Yuki Satou |
| 4th Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 5th Author's Name | Shinzo Yoshikado |
| 5th Author's Affiliation | Doshisha University(Doshisha Univ.) |
| Date | 2016-05-20 |
| Paper # | MW2016-23 |
| Volume (vol) | vol.116 |
| Number (no) | MW-51 |
| Page | pp.pp.67-71(MW), |
| #Pages | 5 |
| Date of Issue | 2016-05-12 (MW) |