| Presentation | 2022-01-27 Effects of Load Impedances at Third Order Intermodulation Tones Eigo Kuwata, Yutaro Yamaguchi, Masaomi Tsuru, Johannes Benedikt, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper reports on new multitone active loadpull measurements at the specific frequencies of third order intermodulation distortions (IMD3). The achieved separation between the effects of fundamental and IMD3 loadpull quantify clearly the potential of incorporating IMD3 load impedances into low distortion high efficiency amplifier design. The results show an increase in drain efficiency (DE) of 11 points and 13dB drop in IMD3 levels by varying the IMD3 impedances only. The results demonstrate the same IMD3 optimum impedances for achieving both maximum DE and linearity yet significantly different from impedances for optimum DE at fundamental frequencies, hence strongly suggesting the separate tuning of IMD3 impedances for improving amplifier’s DE and linearity. This is the first investigation of loadpull at specific IMD3 tones covering the entire smith chart at realistic frequency spacing and compression levels. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | amplifier / distortion / efficiency / IMD3 / GaN HEMT |
| Paper # | ED2021-63,MW2021-105 |
| Date of Issue | 2022-01-20 (ED, MW) |
| Conference Information | |
| Committee | ED / MW |
|---|---|
| Conference Date | 2022/1/27(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hiroki Fujishiro(Tokyo Univ. of Science) / Noriharu Suematsu(Tohoku Univ.) |
| Vice Chair | Seiya Sakai(Hokkaido Univ.) / Tadashi Kawai(Univ. of Hyogo) / Kensuke Okubo(Okayama Prefectural Univ.) / Hideyuki Nakamizo(Mitsubishi Electric) |
| Secretary | Seiya Sakai(Fjitsu Lab.) / Tadashi Kawai(NTT) / Kensuke Okubo(Saitama Univ.) / Hideyuki Nakamizo(Toshiba) |
| Assistant | Ryota Isonoi(SCIOCS) / Yoshitugu Yamamoto(Mitsubishi Electric) / Naoki Hasegawa(Softbank) / Kosuke Katayama(NIT, Tokuyama) |
| Paper Information | |
| Registration To | Technical Committee on Electron Devices / Technical Committee on Microwaves |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effects of Load Impedances at Third Order Intermodulation Tones |
| Sub Title (in English) | |
| Keyword(1) | amplifier |
| Keyword(2) | distortion |
| Keyword(3) | efficiency |
| Keyword(4) | IMD3 |
| Keyword(5) | GaN HEMT |
| 1st Author's Name | Eigo Kuwata |
| 1st Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric) |
| 2nd Author's Name | Yutaro Yamaguchi |
| 2nd Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric) |
| 3rd Author's Name | Masaomi Tsuru |
| 3rd Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric) |
| 4th Author's Name | Johannes Benedikt |
| 4th Author's Affiliation | Cardiff University(Cardiff University) |
| Date | 2022-01-27 |
| Paper # | ED2021-63,MW2021-105 |
| Volume (vol) | vol.121 |
| Number (no) | ED-360,MW-361 |
| Page | pp.pp.7-11(ED), pp.7-11(MW), |
| #Pages | 5 |
| Date of Issue | 2022-01-20 (ED, MW) |