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Home People Research Research Publications Teaching Protocol Sharing News Center for Pain Medicine Research Brief Info Software Alumni Join us Contact us LIU Xiaolong Assistant Professor School of Microelectronics Dr. Xiaolong Liu received the Ph.D. degree in Electronic and Computer Engineering from the Hong Kong University of Science and Technology, in 2019. He was a Post-Doctoral Researcher with the Hong Kong University of Science and Technology. From 2019 to 2021, he was with a silicon-valley start-up, CA, USA, working on ultra-high-speed wireline transceivers. He is currently an Assistant Professor with the School of Microelectronics, Southern University of Science and Technology, Shenzhen, China. His research interests include radio frequency (RF), millimeter-wave (mm-Wave), terahertz and mixed-signal integrated circuits for wireless and wireline communications. Personal Profile Personal Profile Research RF/Mm-Wave/THz Wireless Transceivers Ultra-High-Speed SerDes PLLs/Frequency Synthesizers High-Performance LO Generators Teaching Undergraduate Course: SME103 Fundamentals of Electric Circuits SME313 Design of CMOS Radio Frequency Integrated Circuits  Graduate Course： SME5026 Advanced Analog Integrated Circuit Design Publications Read More JOURNAL PUBLICATIONS [J-7] X. Liu, L. Wu and H. C. Luong, “Millimeter-Wave Varactor-Less Oscillators: A Tutorial,” IEEE Transactions on Circuits and Systems II: Express Briefs (TCAS-II), vol. 71, no. 3, pp. 1613-1618, March 2024. [IEEE Xplore link] [J-6] X. Liu and H. C. Luong, “A 157.8-166.3GHz Fundamental Oscillator Achieving -181.9dBc/Hz FoM in 65nm CMOS,” IEEE Transactions on Terahertz Science and Technology (TTST), vol. 13, no. 1, pp. 93-97, Jan. 2023. [IEEE Xplore link] [J-5] X. Liu and H. C. Luong, “Injection-Locking Techniques for CMOS Millimeter-Wave and Terahertz Signal Generation,” IEEE Transactions on Circuits and Systems II: Express Briefs  (TCAS-II), vol. 69, no. 7, pp. 3037-3043, July 2022. (The Top4 most frequently downloaded paper in July-2022) [IEEE Xplore link] [J-4] X. Liu and H. C. Luong, “Analysis and Design of Magnetically Tuned W-Band Oscillators,” IEEE Transactions on Very Large Scale Integration (VLSI) Systems (TVLSI), vol. 30, no. 6, pp. 732–743, June 2022. [IEEE Xplore link] [J-3] X. Liu, Y. Chao and H. C. Luong, “A 59-to-276-GHz CMOS Signal Generator Using Varactor-Less VCO and Dual-Mode ILFD,” IEEE Journal of Solid-State Circuits (JSSC), vol. 56, no. 8, pp. 2324–2334, Aug. 2021. [IEEE Xplore link] [J-2] X. Liu and H. C. Luong, “A 170-GHz 23.7%-Tuning-Range CMOS Injection-Locked LO Generator with Third-Harmonic Enhancement,” IEEE Transactions on Microwave Theory and Techniques (TMTT), vol. 68, no. 7, pp. 2668–2678, July 2020. [IEEE Xplore link] [J-1] X. Liu and H. C. Luong, “A Fully Integrated 0.27-THz Injection-Locked Frequency Synthesizer with Frequency-Tracking Loop in 65-nm CMOS,” IEEE Journal of Solid-State Circuits (JSSC), vol. 55, no. 4, pp. 1051–1063, April 2020. [IEEE Xplore link]   CONFERENCE PUBLICATIONS [C-10] H. Cao, T. Huang, X. Liu, H. Wang, J. Jin, W. Wu, “A 5.2GHz Trifilar Transformer-Based Class-F23 Noise Circulating VCO with FoM of 192.13 dBc/Hz,” IEEE Asian Solid-State Circuits Conference (A-SSCC). (In Press) [C-9] S. Tian, X. Liu, “A 18.5-to-22.4GHz Class-F23 VCO Achieving 189.1dBc/Hz FoM Without 2nd/3rd-Harmonic Tuning in 65nm CMOS,” IEEE European Conference on Solid-State Circuits (ESSCIRC), Lisbon, Portugal,  pp. 129–132, Sep. 2023. [IEEE Xplore link] [C-8] B. Zhang, H. Mao and X. Liu, “A 12.9–38.6-GHz CMOS LNA with Triple-Coupled Transformer-Based Input Matching Technique,” IEEE International Symposium on Circuits and Systems (ISCAS), Monterey, CA, USA, pp. 1–4, May 2023. [IEEE Xplore link] [C-7] D. Xu, et al. , “A Scalable Adaptive ADC/DSP-Based 1.25-to-56Gbps/112Gbps High-Speed Transceiver Architecture Using Decision-Directed MMSE CDR in 16nm and 7nm,” IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, USA, pp. 134–136, Feb. 2021. [IEEE Xplore link] [C-6] X. Liu and H. C. Luong, “A Fully-Integrated 270-GHz Frequency Synthesizer in 65nm CMOS,” IEEE VLSI Circuit Symposium (VLSI), Kyoto, Japan, pp. C40–C41, June 2019. (Technical highlights) [IEEE Xplore link] [C-5] X. Liu, Z. Huang, J. Yin and H. C. Luong, “Magnetic-Tuning Millimeter-Wave CMOS Oscillators,” IEEE Custom Integrated Circuits Conference (CICC), Austin, TX, USA, pp. 1–8, April 2019. (Invited paper) [IEEE Xplore link] [C-4] X. Liu and H. C. Luong, “A 0.3-V 2.5-mW 154-to-195GHz CMOS Injection-Locked LO Generation with -186.5dB FoM,” IEEE Radio-Frequency Integrated Circuits (RFIC), Philadelphia, PA, USA, pp. 196–199, June 2018. [IEEE Xplore link] [C-3] X. Liu, Y. Chao and H. C. Luong, “A 59-to-276 GHz CMOS Signal Generation for Rotational Spectroscopy,” IEEE Radio-Frequency Integrated Circuits (RFIC), Honolulu, HI, USA, pp. 92–96, June 2017. [IEEE Xplore link] [C-2] X. Liu, C. Chen, J. Ren and H. C. Luong, “Transformer-Based Varactor-Less 96GHz–110GHz VCO and 89GHz–101GHz QVCO in 65nm CMOS,” IEEE Asian Solid-State Circuits Conference (A-SSCC), Toyama, Japan, pp.357–360, Nov. 2016. [IEEE Xplore link] [C-1] X. Liu and H. C. Luong, “A 103.1 GHz Varactor-Less VCO with 14.3% Tuning Range in 65nm CMOS” IEEE International Solid-State Circuit Conference (ISSCC) Student Research Preview, San Francisco, CA, USA, Feb. 2016.  News More Our paper is accepted to 2023 IEEE ESSCIRC and ISCAS 2023-05-26 Join us We welcome individuals passionate in research to join our research group. We have openings for Research Assistant Professor, Postdoctoral Fellows, Research Assistants, Graduate Students, as well as Internships. Interested individuals are invited to email a copy of his/her CV to our email address.Contact：liuxl@sustech.edu.cn Read More Contact Us Contact Address School of Microelectronics, SUSTech, China Office Phone Email liuxl@sustech.edu.cn