| Presentation | 2018-07-20 Broadbanding of a Folded Inverted-L Antenna with slits Fumiya Osaki, Keisuke Noguchi, Shigeru Makino, Tetsuo Hirota, Kenji Itoh, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A compact folded inverted-L antenna (FILA) with slits are studied to obtain broadband characteristics. The FILA consists of two strips that the terminals are open-circuited. The strips have several slits for miniaturization. Current path length of 0.5 wavelengths is provided between feed point and open-terminated for broadbanding. In order to evaluate radiation impedance, simultaneous feeding with the two conductors are modeled, and resonant frequency, radiation resistance and quality factor are calculated. Based on the results, a broadband FILA with six slits are designed. Then impedance and radiation characteristics of the FILA are simulated and measured. Evaluation of miniaturization for the FILA is conducted by using a product of bandwidth and radiation efficiency (Bη product) compared with those of simultaneous feeding models. As results, we obtained 41% improvement of the Bη product for ka = 0.53 compared with Bη of the simultaneous feeding models. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Folded structure / inverted-L antenna / miniaturization / broadbanding / theoretical limit |
| Paper # | AP2018-59 |
| Date of Issue | 2018-07-11 (AP) |
| Conference Information | |
| Committee | AP / SANE / SAT |
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| Conference Date | 2018/7/18(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Remote sensing, Sattelite Communication, Radio propagation, Antennas and Propagation |
| Chair | Jiro Hirokawa(Tokyo Tech.) / Sonosuke Fukushima(ENRI) / Hiroyuki Tsuji(NICT) |
| Vice Chair | Ryo Yamaguchi(SoftBank) / Toshifumi Moriyama(Nagasaki Univ.) / Akitsugu Nadai(NICT) / Hisashi Sujikai(NHK) / Fumihiro Yamashita(NTT) |
| Secretary | Ryo Yamaguchi(Saitama Univ.) / Toshifumi Moriyama(Mitsubishi Electric) / Akitsugu Nadai(ENRI) / Hisashi Sujikai(Univ. of Electro-Comm.) / Fumihiro Yamashita(NTT) |
| Assistant | Michitaka Ameya(AIST) / Ryo Natsuaki(Univ. of Tokyo) / Masato Yamanashi(Mitsubishi Space Software) / Takeshi Amishima(Mitsubishi Electric) |
| Paper Information | |
| Registration To | Technical Committee on Antennas and Propagation / Technical Committee on Space, Aeronautical and Navigational Electronics / Technical Committee on Satellite Telecommunications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Broadbanding of a Folded Inverted-L Antenna with slits |
| Sub Title (in English) | |
| Keyword(1) | Folded structure |
| Keyword(2) | inverted-L antenna |
| Keyword(3) | miniaturization |
| Keyword(4) | broadbanding |
| Keyword(5) | theoretical limit |
| 1st Author's Name | Fumiya Osaki |
| 1st Author's Affiliation | Kanazawa Institute of Technology(KIT) |
| 2nd Author's Name | Keisuke Noguchi |
| 2nd Author's Affiliation | Kanazawa Institute of Technology(KIT) |
| 3rd Author's Name | Shigeru Makino |
| 3rd Author's Affiliation | Kanazawa Institute of Technology(KIT) |
| 4th Author's Name | Tetsuo Hirota |
| 4th Author's Affiliation | Kanazawa Institute of Technology(KIT) |
| 5th Author's Name | Kenji Itoh |
| 5th Author's Affiliation | Kanazawa Institute of Technology(KIT) |
| Date | 2018-07-20 |
| Paper # | AP2018-59 |
| Volume (vol) | vol.118 |
| Number (no) | AP-134 |
| Page | pp.pp.101-106(AP), |
| #Pages | 6 |
| Date of Issue | 2018-07-11 (AP) |