| Presentation | 2017-11-10 Complex permittivity measurement Using a Coaxial Transmission Line and FDTD Kazunori Takahashi, Markus Loewer, Jan Igel, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The coaxial transmission line measurement is the most common technique to measure the complex per- mittivity of granular dielectric materials in wideband. In the technique a coaxial line is filled with a material, and reflection and transmission of electromagnetic waves are measured by a vector network analyser. Determining the complex permittivity of the material requires an analysis of the measured S-parameters. A new analysis method is developed. The method uses FDTD simulations as a forward modelling. The response of a dielectric material modelled in a coaxial line is calculated by the FDTD method with inputing sine waves of different frequencies, and the frequency dependencies of permittivity and conductivity are determined iteratively by updating parameters as the error between the measured and modelled S-parameters is minimised. The report discusses the principle of the method, results obtained for some dielectric materials and considerations for further developments. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | complex permittivity / coaxial transmission line method / inverse problem / FDTD |
| Paper # | EMT2017-58 |
| Date of Issue | 2017-11-02 (EMT) |
| Conference Information | |
| Committee | EMT / IEE-EMT |
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| Conference Date | 2017/11/9(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tendo Hotel (Tendo, Yamagata) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Electromagnetic Theory, etc. |
| Chair | Akira Hirose(Univ. of Tokyo) / Keiji Goto(National Defense Academy) |
| Vice Chair | Koichi Hirayama(Kitami Inst. of Tech.) |
| Secretary | Koichi Hirayama(Univ. of Hyogo) / (Tokyo Metro. Coll. of Tech) |
| Assistant | Tsuyoshi Matsuoka(Kyushu Sangyo Univ.) / Yoshihiro Naka(Kyushu University of Health and Welfare) |
| Paper Information | |
| Registration To | Technical Committee on Electromagnetic Theory / Technical Meeting on Electromagnetic Theory |
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| Language | ENG-JTITLE |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Complex permittivity measurement Using a Coaxial Transmission Line and FDTD |
| Sub Title (in English) | |
| Keyword(1) | complex permittivity |
| Keyword(2) | coaxial transmission line method |
| Keyword(3) | inverse problem |
| Keyword(4) | FDTD |
| 1st Author's Name | Kazunori Takahashi |
| 1st Author's Affiliation | OYO Corporation(OYO) |
| 2nd Author's Name | Markus Loewer |
| 2nd Author's Affiliation | Leibniz Institute for Applied Geophysics(LIAG) |
| 3rd Author's Name | Jan Igel |
| 3rd Author's Affiliation | Leibniz Institute for Applied Geophysics(LIAG) |
| Date | 2017-11-10 |
| Paper # | EMT2017-58 |
| Volume (vol) | vol.117 |
| Number (no) | EMT-289 |
| Page | pp.pp.115-120(EMT), |
| #Pages | 6 |
| Date of Issue | 2017-11-02 (EMT) |