| Presentation | 2019-02-13 Analysis and Compensation of Distortion in Non-linear Amplifiers based on A Complex Model Osamu Ichiyoshi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Nonlinear distortions of amplifiers can bring serious degradations in communication. A practical linearization method to reduce the nonlinear distortion is pre-distorter [1,2]. It is necessary to have the knowledge in advance about the nonlinear performances of the amplifiers in communication links to perform the pre-distortion. For that purpose Saleh model is widely used. Saleh model, useful for applications, is a mere mathematical model hence gives only poor physical interpretations. Furthermore the exact knowledge about the nonlinear amplifiers is not always available in advance. The conventional pre-distorters cannot follow the changes of the nonlinear properties of the amplifiers in time either. In order to solve those problems the author invented a negative feedback linearizer for non-linear amplifiers based on a complex model a few years ago [3]. The negative feedback linearizer can not only cope with wide varieties of nonlinear properties of the amplifiers without the advance knowledge but also follow the changes in time. The author has recently applied the model to analysis of the non-linear amplifiers to get some interesting results with clear physical meaning and practical applications. The cause of nonlinearity is also studied and reported. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Non-linearity / AM/AM / AM/PM / Correlation / Uncorrelated / Stray capacity / Hooke's law / Saleh model |
| Paper # | SAT2018-71 |
| Date of Issue | 2019-02-06 (SAT) |
| Conference Information | |
| Committee | SANE / SAT |
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| Conference Date | 2019/2/13(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tanegashima Island |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Satellite Application and General |
| Chair | Sonosuke Fukushima(ENRI) / Hiroyuki Tsuji(NICT) |
| Vice Chair | Toshifumi Moriyama(Nagasaki Univ.) / Akitsugu Nadai(NICT) / Hisashi Sujikai(NHK) / Fumihiro Yamashita(NTT) |
| Secretary | Toshifumi Moriyama(ENRI) / Akitsugu Nadai(Univ. of Electro-Comm.) / Hisashi Sujikai(NTT) / Fumihiro Yamashita(NICT) |
| Assistant | Ryo Natsuaki(Univ. of Tokyo) / Masato Yamanashi(Mitsubishi Space Software) / Takeshi Amishima(Mitsubishi Electric) / Masaaki Kojima(NHK) |
| Paper Information | |
| Registration To | 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) | Analysis and Compensation of Distortion in Non-linear Amplifiers based on A Complex Model |
| Sub Title (in English) | |
| Keyword(1) | Non-linearity |
| Keyword(2) | AM/AM |
| Keyword(3) | AM/PM |
| Keyword(4) | Correlation |
| Keyword(5) | Uncorrelated |
| Keyword(6) | Stray capacity |
| Keyword(7) | Hooke's law |
| Keyword(8) | Saleh model |
| 1st Author's Name | Osamu Ichiyoshi |
| 1st Author's Affiliation | Human Network for Better 21 Century(HNB21C) |
| Date | 2019-02-13 |
| Paper # | SAT2018-71 |
| Volume (vol) | vol.118 |
| Number (no) | SAT-442 |
| Page | pp.pp.81-86(SAT), |
| #Pages | 6 |
| Date of Issue | 2019-02-06 (SAT) |