| Presentation | 2024-02-29 A Study on Bit Count of Digital Modulation Operation and OSR of 1-bit BP Delta-Sigma Modulation for 40GHz-Band Direct Digital RF Modulator Kouki Nakamura, Satoshi Tsukamoto, Junhao Zhang, Yuki Fujiya, Tomoyuki Furuichi, Noriharu Suematsu, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For future Low Earth Orbit (LEO) constellation satellite communication system, a development millimeter-wave digital beam forming (DBF) antenna and transceiver become emerging technologies. We proposed direct digital RF (DRF) transmitter for this purpose and have showed the feasibility. In this feasibility study, RF section was actually made but digital signal processing (DSP) section was not made but was off-line batch processing. In this paper, we confirm the computation bit count of the direct DRF modulator section and the effect of Oversampling Ratio (OSR) on ACLR, and based on the results and the effect of ACLR(Adjacent Channel Leakage Ratio) improvement by using multiple elements, we present the results of our study on the maximum bandwidth that meets the requirements for a Beyond 5G system. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Direct digital RF / Non-Terrestrial Network / Millimeter wave / 1-bit ΔΣ modulation |
| Paper # | MW2023-176 |
| Date of Issue | 2024-02-22 (MW) |
| Conference Information | |
| Committee | MW |
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| Conference Date | 2024/2/29(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Okayama Prefectural University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave, etc. |
| Chair | Kensuke Okubo(Okayama Prefectural Univ.) |
| Vice Chair | Atsushi Sanada(Osaka Univ.) / Akihito Hirai(Mitsubishi Electric) |
| Secretary | Atsushi Sanada(Univ. of Electro-Comm) / Akihito Hirai(Murata Manufacturing) |
| Assistant | Tomoyuki Furuichi(Tohoku Univ.) / Kosuke Katayama(NIT Tokuyama College) |
| Paper Information | |
| Registration To | Technical Committee on Microwaves |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Bit Count of Digital Modulation Operation and OSR of 1-bit BP Delta-Sigma Modulation for 40GHz-Band Direct Digital RF Modulator |
| Sub Title (in English) | |
| Keyword(1) | Direct digital RF |
| Keyword(2) | Non-Terrestrial Network |
| Keyword(3) | Millimeter wave |
| Keyword(4) | 1-bit ΔΣ modulation |
| 1st Author's Name | Kouki Nakamura |
| 1st Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 2nd Author's Name | Satoshi Tsukamoto |
| 2nd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 3rd Author's Name | Junhao Zhang |
| 3rd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 4th Author's Name | Yuki Fujiya |
| 4th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 5th Author's Name | Tomoyuki Furuichi |
| 5th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 6th Author's Name | Noriharu Suematsu |
| 6th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2024-02-29 |
| Paper # | MW2023-176 |
| Volume (vol) | vol.123 |
| Number (no) | MW-396 |
| Page | pp.pp.9-14(MW), |
| #Pages | 6 |
| Date of Issue | 2024-02-22 (MW) |