| Presentation | 2015-07-17 Dynamic AM/AM and AM/PM control of Doherty amplifier using tanh-shaped function Yuji Komatsuzaki, Hiroshi Otsuka, Hifumi Noto, Shintaro Shinjo, Koji Yamanaka, Yoshihiro Hamamatsu, Hiroshi Fukumoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Power amplifiers for communication systems require increasingly high efficiency at large back-off from saturated output power. The Doherty amplifier is one promising solution to solve this problem, however the linearity of the Doherty amplifier is deteriorated compared to class-AB amplifiers. In this work, a low distortion Doherty amplifier with dynamic AM/AM and AM/PM control is proposed, using a tanh function to control the gate bias and λ/4 lines with changing input signal. Simulations show that linearity of the amplifier with tanh-shaped dynamic AM/AM and AM/PM control is improved compared to no control, without significantly affecting the efficiency. Experimental results of the amplifier with tanh-shaped dynamic AM/AM control also show that ACPR of the amplifier is improved by 3dB compared to no control. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Doherty amplifier / Linearization / tanh function / AM/AM / AM/PM / AM/PM |
| Paper # | EMT2015-47,MW2015-85,OPE2015-59,EST2015-51,MWP2015-50 |
| Date of Issue | 2015-07-09 (EMT, MW, OPE, EST, MWP) |
| Conference Information | |
| Committee | EMT / MW / OPE / MWP / EST / IEE-EMT |
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| Conference Date | 2015/7/16(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kushiro City Lifelong Learning Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Light wave & Electromagnetic Wave Workshop |
| Chair | Motoyuki Sato(Tohoku Univ.) / Yohei Ishikawa(Kyoto Univ.) / Hiroyuki Uenohara(Tokyo Inst. of Tech.) / Yuichi Kado(Kyoto Inst. of Tech.) / Tatsuya Kashiwa(Kitami Inst. of Tech.) / Masahiro Tanaka(Gifu Univ.) |
| Vice Chair | Akira Hirose(Univ. of Tokyo) / Masashi Nakatsugawa(NTT) / Takao Kuki(Kokushikan Univ.) / Kenjiro Nishikawa(Kagoshima Univ.) / Kensuke Ogawa(Fujikura) / Tetsuya Kawanishi(NICT) / Hiroyuki Toda(Doshisha Univ.) / Hideaki Kimura(NTT) / Akimasa Hirata(Nagoya Inst. of Tech.) / Shinichiro Ohnuki(Nihon Univ.) |
| Secretary | Akira Hirose(Niigata Univ.) / Masashi Nakatsugawa(Mitsubishi Electric) / Takao Kuki(NTT) / Kenjiro Nishikawa(Panasonic) / Kensuke Ogawa(Fujitsu Labs.) / Tetsuya Kawanishi(NTT) / Hiroyuki Toda(ENRI) / Hideaki Kimura(NTT) / Akimasa Hirata(Tokyo Inst. of Tech.) / Shinichiro Ohnuki(Muroran Inst. of Tech.) / (NDA) |
| Assistant | Kazunori Takahashi(Tohoku Univ.) / Ryo Ishikawa(Univ. of Electro-Comm.) / Naoto Sekiya(Univ. of Yamanashi) / Takaaki Ishigure(Keio Univ.) / Eiji Yagyu(Mitsubishi Electric) / Kensuke Ikeda(CRIEPI) / Atsushi Kanno(NICT) / Atsushi Kezuka(ENRI) / Kenji Taguchi(Kitami Inst. of Tech.) / Yoshihiro Naka(KUHW) |
| Paper Information | |
| Registration To | Technical Committee on Electromagnetic Theory / Technical Committee on Microwaves / Technical Committee on Optoelectronics / Technical Committee on Microwave and Millimeter-wave Photonics / Technical Committee on Electronics Simulation Technology / 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) | Dynamic AM/AM and AM/PM control of Doherty amplifier using tanh-shaped function |
| Sub Title (in English) | |
| Keyword(1) | Doherty amplifier |
| Keyword(2) | Linearization |
| Keyword(3) | tanh function |
| Keyword(4) | AM/AM |
| Keyword(5) | AM/PM |
| Keyword(6) | AM/PM |
| 1st Author's Name | Yuji Komatsuzaki |
| 1st Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric Corp.) |
| 2nd Author's Name | Hiroshi Otsuka |
| 2nd Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric Corp.) |
| 3rd Author's Name | Hifumi Noto |
| 3rd Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric Corp.) |
| 4th Author's Name | Shintaro Shinjo |
| 4th Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric Corp.) |
| 5th Author's Name | Koji Yamanaka |
| 5th Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric Corp.) |
| 6th Author's Name | Yoshihiro Hamamatsu |
| 6th Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric Corp.) |
| 7th Author's Name | Hiroshi Fukumoto |
| 7th Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric Corp.) |
| Date | 2015-07-17 |
| Paper # | EMT2015-47,MW2015-85,OPE2015-59,EST2015-51,MWP2015-50 |
| Volume (vol) | vol.115 |
| Number (no) | EMT-141,MW-142,OPE-143,EST-144,MWP-145 |
| Page | pp.pp.227-232(EMT), pp.227-232(MW), pp.227-232(OPE), pp.227-232(EST), pp.227-232(MWP), |
| #Pages | 6 |
| Date of Issue | 2015-07-09 (EMT, MW, OPE, EST, MWP) |