| Presentation | 2020-07-17 Study on Series Connected Harmonic-Tuned GaN HEMT Doherty Power Amplifier for Directly Exciting a Loop Antenna of OAM communication with Balanced Mode Masahiro Nakada, Yoichiro Takayama, Ryo Ishikawa, Kazuhiko Honjo, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A series-connected harmonic-tuned GaN HEMT Doherty amplifier (DA) has been developed for directly exciting a loop antenna that generates orbital angular momentum (OAM) wave. Since the loop antenna is excited in a balanced-mode, it is expected that the loop antenna can be used as an output combine circuit instead of a balun used in the series-connected DA. For a large-capacity communication, the DA was designed so that efficiency at a back-off power level that was set to obtain a wider dynamic power range was improved, based on a proposed quarter-wave transformer less DA design and a harmonic treatment design. The fabricated DA achieved a maximum drain efficiency of 53% and a maximum power-added efficiency (PAE) of 45% with a saturation output power of 36.5 dBm. Furthermore, at an output back-off of 10 dB, the drain efficiency was 38% and the PAE was 34%. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Doherty power amplifier / Harmonic-Tuned / GaN HEMT / Loop Antenna of OAM communication |
| Paper # | EMT2020-24,MW2020-33,OPE2020-19,EST2020-24,MWP2020-24 |
| Date of Issue | 2020-07-09 (EMT, MW, OPE, EST, MWP) |
| Conference Information | |
| Committee | EMT / MW / OPE / EST / MWP / IEE-EMT |
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| Conference Date | 2020/7/16(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Video Conf. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Light wave & Electromagnetic Wave Workshop |
| Chair | Koichi Hirayama(Kitami Inst. of Tech.) / Yoshinori Kogami(Utsunomiya Univ.) / Goji Nakagawa(Fujitsu) / Shinichiro Ohnuki(Nihon Univ.) / Naoto Yoshimoto(Chitose Inst. of Science and Tech.) / Akira Matsushima(Kumamoto Univ.) |
| Vice Chair | Hiroyuki Deguchi(Doshisha Univ.) / Tadashi Kawai(Univ. of Hyogo) / Kensuke Okubo(Okayama Prefectural Univ.) / Shintaro Shinjo(Mitsubishi Electric) / Takaaki Ishigure(Keio University) / Masayuki Kimishima(Advantest) / Jun Shibayama(Hosei Univ.) / Yasuhide Tsuji(Muroran Institute of Technology) / Akihiko Hirata(Chiba Inst. of Tech.) |
| Secretary | Hiroyuki Deguchi(Tokyo Metropolitan Univ. Inst.of Tech.) / Tadashi Kawai(University of Miyazaki) / Kensuke Okubo(Fujitsu Labs.) / Shintaro Shinjo(Saitama Univ.) / Takaaki Ishigure(Gunma Univ.) / Masayuki Kimishima(Fujikura) / Jun Shibayama(Aoyama Gakuin Univ.) / Yasuhide Tsuji(ENRI) / Akihiko Hirata(Yazaki) / (NICT) |
| Assistant | Kazuki Niino(Kyoto Univ.) / Kyoya Takano(Tokyo Univ. of Science) / Naoki Hasegawa(Softbank) / Junichi Fujikata(PETRA) / Toshio Watanabe(Kagoshima Univ.) / Hidenori Ishibashi(Mitsubishi Electric) / Seiya Kishimoto(Nihon Univ.) / Kensuke Ikeda(CRIEPI) / Li Yi(Osaka Univ.) / Takashi Yamada(NTT) / Junichiro Sugisaka(Kitami Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Electromagnetic Theory / Technical Committee on Microwaves / Technical Committee on OptoElectronics / Technical Committee on Electronics Simulation Technology / Technical Committee on Microwave and Millimeter-wave Photonics / Technical Meeting on Electromagnetic Theory |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on Series Connected Harmonic-Tuned GaN HEMT Doherty Power Amplifier for Directly Exciting a Loop Antenna of OAM communication with Balanced Mode |
| Sub Title (in English) | |
| Keyword(1) | Doherty power amplifier |
| Keyword(2) | Harmonic-Tuned |
| Keyword(3) | GaN HEMT |
| Keyword(4) | Loop Antenna of OAM communication |
| 1st Author's Name | Masahiro Nakada |
| 1st Author's Affiliation | The University of Electro-Communications(UEC) |
| 2nd Author's Name | Yoichiro Takayama |
| 2nd Author's Affiliation | The University of Electro-Communications(UEC) |
| 3rd Author's Name | Ryo Ishikawa |
| 3rd Author's Affiliation | The University of Electro-Communications(UEC) |
| 4th Author's Name | Kazuhiko Honjo |
| 4th Author's Affiliation | The University of Electro-Communications(UEC) |
| Date | 2020-07-17 |
| Paper # | EMT2020-24,MW2020-33,OPE2020-19,EST2020-24,MWP2020-24 |
| Volume (vol) | vol.120 |
| Number (no) | EMT-100,MW-101,OPE-102,EST-103,MWP-104 |
| Page | pp.pp.101-106(EMT), pp.101-106(MW), pp.101-106(OPE), pp.101-106(EST), pp.101-106(MWP), |
| #Pages | 6 |
| Date of Issue | 2020-07-09 (EMT, MW, OPE, EST, MWP) |