| Presentation | 2020-01-31 Analysis of the radiation characteristics of a photoconductive antenna using the FDTD method with the subgrid technique Yu Nakano, Jun Shibayama, Junji Yamauchi, Hisamatsu Nakano, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A photoconductive antenna has been investigated as a way to emit terahertz waves.Using the finite- difference time-domain (FDTD) method, the structure can be modeled with a current injection technique and the frequency characteristics can be obtained by a one-time solution.However, the conventional FDTD analysis requires a large amount of memory and computation time, since the photoconductive antenna has a large Si lens.The purpose of this article is to improve the computational efficiency of the FDTD analysis for the photoconductive antenna.To do so, we use the FDTD method with the subgrid technique.First, we analyze the photoconductive antenna with a small Si lens using the conventional FDTD method and the FDTD method with the subgrid technique.It is shown that the results are almost identical to each other.The memory and computation time of the subgrid technique are respectively reduced by about 70% and 60%, showing a significant improvement of the computational efficiency.Next, we analyze a photoconductive antenna with a larger Si lens.It is shown that the peak frequency shifts to the low frequency side, as the dipole length is increased. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Terahertz (THz) wave / Finite-difference time-domain (FDTD) method / Subgrid technique / Photoconductive antenna |
| Paper # | EST2019-101 |
| Date of Issue | 2020-01-23 (EST) |
| Conference Information | |
| Committee | EST |
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| Conference Date | 2020/1/30(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Beppu International Convention Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Simulation Technique, etc. |
| Chair | Akimasa Hirata(Nagoya Inst. of Tech.) |
| Vice Chair | Shinichiro Ohnuki(Nihon Univ.) / Masayuki Kimishima(Advantest) / Jun Shibayama(Hosei Univ.) |
| Secretary | Shinichiro Ohnuki(National Inst. of Tech.,Sendai College) / Masayuki Kimishima(Aoyama Gakuin Univ.) / Jun Shibayama |
| Assistant | Takahiro Ito(Nagoya Inst. of Tech.) / Kazuhiro Fujita(Fujitsu) |
| Paper Information | |
| Registration To | Technical Committee on Electronics Simulation Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Analysis of the radiation characteristics of a photoconductive antenna using the FDTD method with the subgrid technique |
| Sub Title (in English) | |
| Keyword(1) | Terahertz (THz) wave |
| Keyword(2) | Finite-difference time-domain (FDTD) method |
| Keyword(3) | Subgrid technique |
| Keyword(4) | Photoconductive antenna |
| 1st Author's Name | Yu Nakano |
| 1st Author's Affiliation | Hosei University(Hosei Univ.) |
| 2nd Author's Name | Jun Shibayama |
| 2nd Author's Affiliation | Hosei University(Hosei Univ.) |
| 3rd Author's Name | Junji Yamauchi |
| 3rd Author's Affiliation | Hosei University(Hosei Univ.) |
| 4th Author's Name | Hisamatsu Nakano |
| 4th Author's Affiliation | Hosei University(Hosei Univ.) |
| Date | 2020-01-31 |
| Paper # | EST2019-101 |
| Volume (vol) | vol.119 |
| Number (no) | EST-407 |
| Page | pp.pp.115-118(EST), |
| #Pages | 4 |
| Date of Issue | 2020-01-23 (EST) |