Presentation | 2003/7/24 Power Efficient Amplifier Model Considering Drain Current Dependence upon Input Power for Mobile Communication Applications Fumitaka IIZUKA, Tsuyoshi OGINO, Hiroshi SUZUKI, Kazuhiko FUKAWA, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Simple and accurate transfer equations of power amplifier for mobile communications that requires linearity compensation technique such as predistortion due to its severe nonlinear AM/AM and AM/PM characteristics are studied. This paper proposes AM/AM characteristics model of AB, B, and C class high efficient power amplifiers employing PHEMT by consideration of drain current variation according to input level. Generalized model is shown as relation of input voltage amplitude V_i and output voltage V_0 by load line variation ratio k introducing to indicate the change of drain current and the value at no input signal represents operation classes. And further discussion derives simple approximate equations from the generalized model. Finally, comparison between the results obtained by the model, simulator, and measurement shows that they are very close at the range of 20 dB below saturation output power of amplifiers. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Mobile communication / Efficient power amplifier / Bias design |
Paper # | A・P2003-82,SAT2003-74,MW2003-88,OPE2003-75 |
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Conference Information | |
Committee | SAT |
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Conference Date | 2003/7/24(1days) |
Place (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Satellite Telecommunications (SAT) |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Power Efficient Amplifier Model Considering Drain Current Dependence upon Input Power for Mobile Communication Applications |
Sub Title (in English) | |
Keyword(1) | Mobile communication |
Keyword(2) | Efficient power amplifier |
Keyword(3) | Bias design |
1st Author's Name | Fumitaka IIZUKA |
1st Author's Affiliation | Taiyo yuden Co., Ltd.:Tokyo Institute of Technology() |
2nd Author's Name | Tsuyoshi OGINO |
2nd Author's Affiliation | Taiyo yuden Co., Ltd. |
3rd Author's Name | Hiroshi SUZUKI |
3rd Author's Affiliation | Tokyo Institute of Technology |
4th Author's Name | Kazuhiko FUKAWA |
4th Author's Affiliation | Tokyo Institute of Technology |
Date | 2003/7/24 |
Paper # | A・P2003-82,SAT2003-74,MW2003-88,OPE2003-75 |
Volume (vol) | vol.103 |
Number (no) | 234 |
Page | pp.pp.- |
#Pages | 8 |
Date of Issue |