https://scholars.lib.ntu.edu.tw/handle/123456789/546587
標題: | A Pulse-Modulated Polar Transmitter Using Direct Digital Synthesis for 5G NR Mobile Applications | 作者: | Chen, Y.-H. Wang, T.-H. Lin, S.-C. JAU-HORNG CHEN YI-JAN EMERY CHEN |
關鍵字: | 5G NR; PA linearization; polar transmitters; power amplifiers (PAs); radio transmitters | 公開日期: | 2020 | 卷: | 67 | 期: | 10 | 起(迄)頁: | 1894-1898 | 來源出版物: | IEEE Transactions on Circuits and Systems II: Express Briefs | 摘要: | This brief presents a pulse-modulated polar transmitter using direct digital synthesis (DDS) for 5G NR mobile phone applications. In contrast to the conventional radio-frequency transmitter that requires high-resolution digital-to-analog converters (DACs) to maintain signal fidelity, the proposed transmitter only needs high-speed but low-resolution DACs for DDS. A transmitter prototype was developed and tested with a 5G NR 20-MHz bandwidth signal at the carrier frequency of 836.5 MHz. The transmitter achieved the adjacent channel leakage ratio (ACLR) of -31.9 dBc using the 4 GS/s DACs with resolution of just 4 bits without the use of digital predistortion or other linearization techniques. © 2004-2012 IEEE. |
URI: | https://www.scopus.com/inward/record.url?eid=2-s2.0-85087820859&partnerID=40&md5=d66a58e64298112b8e9f5418c14565af https://scholars.lib.ntu.edu.tw/handle/123456789/546587 |
DOI: | 10.1109/TCSII.2019.2956978 | SDG/關鍵字: | Digital radio; Digital to analog conversion; Direct digital control systems; Radio transmission; Transmitters; Adjacent channel leakage ratios; Digital predistortion; Direct digital synthesis; Linearization technique; Mobile applications; Mobile phone applications; Polar transmitter; Radio frequency transmitters; 5G mobile communication systems |
顯示於: | 工程科學及海洋工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。