| Presentation | 2021-10-14 AM-AM Behavior Model that Reproduces the Gain Increase Phenomenon of RF Power Amplifier Satoshi Tanaka, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In 5G (5th Generation) mobile phone, QAM (quadrature amplitude modulation) which has high PAPR (peak to average power ratio) is applied. Therefore, PA (power amplifier) is required to achieve high linearity. Recently HBT (hetero bipolar transistor) is widely applied to PAs for mobile phone terminals. In the single-stage PA to which HBT is applied, the gain from the signal source to the base decreases as the output power increase. On the other hand, the gain from the base to the output increases as the output power increases. In a PA with HBT applied, the combined characteristics of two characteristics having the opposite characteristics to each other become the overall characteristics. An AM (amplitude modulation)-AM behavior model that can express both the increase and decrease of gain is useful for grasping the characteristics of such PA. The model reported so far has been well expressed for PA saturation, that is, a decrease in gain, but there was no expression of the increase in gain generated when the output power was increased. In this report, a model that can express the increase in gain using gaussian functions is proposed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mobile Phone / Power Amplifier / Non-Linear / Behavior Model / AM-AM |
| Paper # | CAS2021-20,NLP2021-18 |
| Date of Issue | 2021-10-07 (CAS, NLP) |
| Conference Information | |
| Committee | CAS / NLP |
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| Conference Date | 2021/10/14(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hiroki Sato(Sony LSI Design) / Takuji Kosaka(Chukyo Univ.) |
| Vice Chair | Yoshinobu Maeda(Niigata Univ.) / Akio Tsuneda(Kumamoto Univ.) |
| Secretary | Yoshinobu Maeda(Sony LSI Design) / Akio Tsuneda(NIT, Toyama college) |
| Assistant | Motoi Yamaguchi(TECHNOPRO) / Yohei Nakamura(Hitachi) / Takahide Sato(Univ. of Yamanashi) / Yasutoshi Aibara(Murata Manufacturing) / Hideyuki Kato(Oita Univ.) / Yuichi Yokoi(Nagasaki Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Circuits and Systems / Technical Committee on Nonlinear Problems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | AM-AM Behavior Model that Reproduces the Gain Increase Phenomenon of RF Power Amplifier |
| Sub Title (in English) | |
| Keyword(1) | Mobile Phone |
| Keyword(2) | Power Amplifier |
| Keyword(3) | Non-Linear |
| Keyword(4) | Behavior Model |
| Keyword(5) | AM-AM |
| 1st Author's Name | Satoshi Tanaka |
| 1st Author's Affiliation | Murata Manufacturing Co., Ltd.(Murata) |
| Date | 2021-10-14 |
| Paper # | CAS2021-20,NLP2021-18 |
| Volume (vol) | vol.121 |
| Number (no) | CAS-196,NLP-197 |
| Page | pp.pp.17-22(CAS), pp.17-22(NLP), |
| #Pages | 6 |
| Date of Issue | 2021-10-07 (CAS, NLP) |