| Presentation | 1999/4/23 Microwave measurements of Low-Temperature dependences of complex permittivity of MgO and BMT substrates. Toru Hashimoto, Satoshi Kamijyou, Hiromitsu Itamoto, Yoshio Kobayashi, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents measured results of low-temperature dependence of the complex permittivity (ε_s, tanδ_s) of MgO and Ba (Mg, Ta, Sb) O_3 ceramic substrates for High-T_c superconductibe thin films by using a circular cavity resonance method. At the room-temperture, the results of MgO substrates measured at 14～16GHz are ε_s=9.85 within the precision 0.2% and tanδ_s=7.8×10^<-6> within the precision 6.4%. Moreover, the measured results below 100K about 14GHz are ε_s=9.6～9.7 and tanδ_s<1.0×10^<-6>. Many MgO substrates in a lot have almost the same values of ε_s and tanδ_s, but the plates in the different lot have different ε_s and tanδ_s. When we design the microstrip filters, it is necessary to measure the complex permittivity for each substrate. The results of BMT substrates measured below 100K are scattered between ε_s=24.0～24.4 and tanδ_s=(1～10)×10^<-6>. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | High-Temperature Superconductive thin films / complex permittivity |
| Paper # | SCE99-5 |
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| Conference Information | |
| Committee | SCE |
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| Conference Date | 1999/4/23(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Superconductive Electronics (SCE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Microwave measurements of Low-Temperature dependences of complex permittivity of MgO and BMT substrates. |
| Sub Title (in English) | |
| Keyword(1) | High-Temperature Superconductive thin films |
| Keyword(2) | complex permittivity |
| 1st Author's Name | Toru Hashimoto |
| 1st Author's Affiliation | Faculty of Engineering, Saitama University() |
| 2nd Author's Name | Satoshi Kamijyou |
| 2nd Author's Affiliation | Faculty of Engineering, Saitama University |
| 3rd Author's Name | Hiromitsu Itamoto |
| 3rd Author's Affiliation | Faculty of Engineering, Saitama University |
| 4th Author's Name | Yoshio Kobayashi |
| 4th Author's Affiliation | Faculty of Engineering, Saitama University |
| Date | 1999/4/23 |
| Paper # | SCE99-5 |
| Volume (vol) | vol.99 |
| Number (no) | 28 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |