https://scholars.lib.ntu.edu.tw/handle/123456789/580880
標題: | A 38-GHz sub-harmonic I/Q modulator using lo frequency quadrupler in 65-nm CMOS | 作者: | Tang T.-C Chen C.-N Lin H.-H Lin J.-L HUEI WANG |
關鍵字: | CMOS integrated circuits; Frequency modulation; Millimeter waves; Conversion gain; Image reject; LO frequency; Measured results; Millimeter wave (MMW); Quadrupler; RF isolation; Sub-harmonic mixer; Modulators | 公開日期: | 2019 | 卷: | 2019-December | 起(迄)頁: | 723-725 | 來源出版物: | Asia-Pacific Microwave Conference Proceedings, APMC | 摘要: | A 38 GHz modulator composed of a differential I/Q mixer and a high power frequency quadrupler in 65-nm CMOS for the 5G millimeter-wave (MMW) Tx application is presented. The 5 GHz LO feed is utilized which is compatible with the 5G sub-6 GHz system. In order to up-convert the 2 GHz IF signal to 38 GHz RF using the 5 GHz LO source, sub-harmonic mixers and frequency quadrupler are adopted. According to the measured results, the proposed modulator demonstrates a conversion gain of 2 dB and an OP1dBof-10 dBm over 37.5-38.5 GHz with 42-mW dc power dissipation (PDC) of the mixer and 120-mW PDC of the frequency quadrupler. The modulator performs-47-dBc 8LO-to-RF isolation and better than-32-dBc IRR. Furthermore, due to the high 8LO-to-RF isolation and IRR performances, the 64-quadratic-amplitude modulation (QAM) with 1.5 Gb/s data rate is successfully demonstrated at 38 GHz. The proposed 38 GHz modulator shows potential for the sub-6 GHz and MMW coexistent 5G system. ? 2019 IEEE. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85082988333&doi=10.1109%2fAPMC46564.2019.9038741&partnerID=40&md5=d1dc3d3564a09732daa63cc45218aa72 https://scholars.lib.ntu.edu.tw/handle/123456789/580880 |
DOI: | 10.1109/APMC46564.2019.9038741 |
顯示於: | 電機工程學系 |
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