| Presentation | 2014-03-05 Modulation Accuracy of a Quadrature-Modulation EPWM Transmitter with a CMOS Class-D Power Amplifier Wataru Someya, Yohtaro Umeda, Yusuke Kozawa, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Switching-mode power amplifiers for wireless communication systems demand high power efficiency and linearity. Of the available types of high-efficiency switching-mode power amplifiers, envelope pulse-width modulation (EPWM) transmitters are advantageous because of their high power efficiency and linearity. Especially, quadrature modulation type EPWM transmitter has the advantage that an increase in the quantization noise by the nonlinearity doesn't occur when the pulse width modulates. However, 0 values cannot be output well at the class-D power amplifier that uses the series resonant circuit because the pulse width modulation signals are three values (the positive and negative and 0) and there is a problem that deterioration in the signal pulse type occurs. this paper, the class-D power amplifier that uses the parallel resonant circuit shows that modulation accuracy (EVM) is excellent compared with the class-D power amplifier that uses the series resonant circuit. Additionally, the output electric power, the drain efficiency, and the electric power addition efficiency are compared. |
| Keyword(in Japanese) | (See Japanese page) |
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| Paper # | MW2013-222 |
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| Committee | MW |
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| Conference Date | 2014/2/25(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Microwaves (MW) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Modulation Accuracy of a Quadrature-Modulation EPWM Transmitter with a CMOS Class-D Power Amplifier |
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| 1st Author's Name | Wataru Someya |
| 1st Author's Affiliation | Department of Electrical Engineering, Graduate School of Science and Technology, Tokyo University of Science() |
| 2nd Author's Name | Yohtaro Umeda |
| 2nd Author's Affiliation | Department of Electrical Engineering, Graduate School of Science and Technology, Tokyo University of Science |
| 3rd Author's Name | Yusuke Kozawa |
| 3rd Author's Affiliation | Department of Electrical Engineering, Graduate School of Science and Technology, Tokyo University of Science |
| Date | 2014-03-05 |
| Paper # | MW2013-222 |
| Volume (vol) | vol.113 |
| Number (no) | 460 |
| Page | pp.pp.- |
| #Pages | 6 |
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