| Presentation | 2023-03-03 Design of dielectric loaded TM0m0 mode cylindrical cavity resonator for the evaluation of a lossy dielectric material Yuma Kasakura, Yoshinori Kogami, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, microwave technology has been employed in medical fields, and evaluation of the complex permittivity of the liquid biological tissue or its phantom is required. The TM0m0 mode cylindrical cavity resonator method, which is known as the accurate evaluation method for rod-shaped dielectric materials, has also been attracted attention as an evaluation method for liquids. However, when lossy dielectric material such as the biological tissue is loaded into the resonator, the resonance is difficult to measure because the Q factor decreases due to excessive concentration of electric field on the sample. In this paper, we propose a new resonator structure in which a low-loss dielectric ring is inserted near the cavity sidewall to suppress the electric field concentration. Then, the improvement of the Q factor was confirmed from the rigorous analysis of the resonance characteristics. The design of the resonator for the measurement is also shown. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Liquid phantom / Complex permittivity measurement / Resonators method / Mode matching method |
| Paper # | MW2022-176 |
| Date of Issue | 2023-02-23 (MW) |
| Conference Information | |
| Committee | MW |
|---|---|
| Conference Date | 2023/3/2(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tottori Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave, etc. |
| Chair | Noriharu Suematsu(Tohoku Univ.) |
| Vice Chair | Tadashi Kawai(Univ. of Hyogo) / Kensuke Okubo(Okayama Prefectural Univ.) / Hideyuki Nakamizo(Mitsubishi Electric) |
| Secretary | Tadashi Kawai(Univ. of Electro-Comm) / Kensuke Okubo(Toshiba) / Hideyuki Nakamizo |
| Assistant | Naoki Hasegawa(Softbank) / Kosuke Katayama(NIT Tokuyama College) |
| Paper Information | |
| Registration To | Technical Committee on Microwaves |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design of dielectric loaded TM0m0 mode cylindrical cavity resonator for the evaluation of a lossy dielectric material |
| Sub Title (in English) | |
| Keyword(1) | Liquid phantom |
| Keyword(2) | Complex permittivity measurement |
| Keyword(3) | Resonators method |
| Keyword(4) | Mode matching method |
| 1st Author's Name | Yuma Kasakura |
| 1st Author's Affiliation | Utsunomiya University(Utsunomiya Univ.) |
| 2nd Author's Name | Yoshinori Kogami |
| 2nd Author's Affiliation | Utsunomiya University(Utsunomiya Univ.) |
| Date | 2023-03-03 |
| Paper # | MW2022-176 |
| Volume (vol) | vol.122 |
| Number (no) | MW-411 |
| Page | pp.pp.108-113(MW), |
| #Pages | 6 |
| Date of Issue | 2023-02-23 (MW) |