| Presentation | 2014-11-21 Quadrature-modulation Transmitter with Tri-level Delta-sigma Modulation for Generating Bi-level EPWM Signal Takashi NODA, Wataru SOMEYA, Yoshiharu IIKURA, Yohtaro UMEDA, Yusuke KOZAWA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents a quadrature-modulation (QM) envelope-pulse-width-modulation (EPWM) transmitter with delta-sigma tri-level modulators to generate a bi-level EPWM signal for representing the off state between burst signals. This bi-level transmitter is suitable for directly connecting to a single-ended antenna and advantageous in small size and high power efficiency due to the omission of a transformer used in the conventional tri-level transmitters with two power amplifiers (PAs) in H-bridge configuration. Although simulation including digital signal processing with the QM EPWM and microwave circuit simulation with the power amplifier using n-MOSFETs shows that the error vector magnitude (EVM) of the proposed transmitter is slightly worse than the conventional transmitter, the proposed transmitter shows substantially good EVM performance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | transmitter / power amplifier / class-D / envelope pulse-width modulation / quadrature modulation / error vector magnitude / coding efficiency / power-added efficiency |
| Paper # | MW2014-139 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 2014/11/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| 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) | Quadrature-modulation Transmitter with Tri-level Delta-sigma Modulation for Generating Bi-level EPWM Signal |
| Sub Title (in English) | |
| Keyword(1) | transmitter |
| Keyword(2) | power amplifier |
| Keyword(3) | class-D |
| Keyword(4) | envelope pulse-width modulation |
| Keyword(5) | quadrature modulation |
| Keyword(6) | error vector magnitude |
| Keyword(7) | coding efficiency |
| Keyword(8) | power-added efficiency |
| 1st Author's Name | Takashi NODA |
| 1st Author's Affiliation | Department of Electrical Engineering, Graduate School of Science and Technology, Tokyo University of Science() |
| 2nd Author's Name | Wataru SOMEYA |
| 2nd Author's Affiliation | Department of Electrical Engineering, Graduate School of Science and Technology, Tokyo University of Science |
| 3rd Author's Name | Yoshiharu IIKURA |
| 3rd Author's Affiliation | Department of Electrical Engineering, Graduate School of Science and Technology, Tokyo University of Science |
| 4th Author's Name | Yohtaro UMEDA |
| 4th Author's Affiliation | Department of Electrical Engineering, Graduate School of Science and Technology, Tokyo University of Science |
| 5th Author's Name | Yusuke KOZAWA |
| 5th Author's Affiliation | Department of Electrical Engineering, Graduate School of Science and Technology, Tokyo University of Science |
| Date | 2014-11-21 |
| Paper # | MW2014-139 |
| Volume (vol) | vol.114 |
| Number (no) | 318 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |