無線集成電路與系統實驗室（WiCAS）
Wireless Integrated Circuit and System Lab
MS/PhD/Postdoc positions open✳️！
現招收品學兼優、勇於創新的碩士生👩🏼🔬、博士生以及博士後🧗🏼♂️🏚。
歡迎有誌於從事射頻／模擬／數字IC設計👩🏻、天線、智能系統及算法研究的同學加入。
實驗室為學生提供與工業界接軌的設計理念🏦，開放包容的科研環境和幫助優秀學生提供工業界實習機會。
WiCAS課題組研究方向🪞：
先進CMOS工藝上的高性能收發機架構與芯片設計
應用於智能傳感器和5G/6G通訊的毫米波集成電路與系統
面向智能物聯網和可穿戴等新型應用的無線SoC芯片與算法一體化微系統
教育背景
美國加州大學聖芭芭拉分校，電子與計算機工程🏐，博士
美國加州大學聖芭芭拉分校，經濟學，碩士
上海沐鸣娱乐，電子工程，學士
工作經歷：
2015年-至今沐鸣📶，研究員，博士生導師
2005年-2015年英特爾公司 (Intel Corp) ，英特爾研究院（Intel Labs）主管研究科學家
主要成果及榮譽
IEEE 高級會員
已發表在包含行業頂級期刊ISSCC和JSSC在內的100+篇論文👨🏽🍼🧝🏿：
無線集成電路：9 ISSCC; 9 JSSC; 1 TCASI; 2 RFIC; 1 CICC; 3 VLSI-C; 2 ESSCIRC
微波集成電路：2 TMTT; 8 MWCL; 4 IMS; 2 CSICS
器件與工藝：2 EDL; 1 VLSI-T; 1 DRC
天線與算法：1 TAP; 3 ACCESS
13項美國專利
2篇英文著作
近期國際學術重要職務
IEEE 國際固態電路會議 ISSCC 技術評審委員
IEEE 國際射頻集成電路會議 RFIC 指導委員/技術評審委員
IEEE MWCL 副主編 2019至今
IEEE 國際電子器件會議 IEDM 技術評審委員 2021-2022
IEEE 國際無線會議 IWS 技術評審委員 2013-2020
IEEE JSSC 特邀編輯 Guest Editor 2019-2020
行業研發經歷
1.高集成度智能毫米波傳感器SoC
·集成毫米波收發機💷、超寬帶調頻鎖相環、高精度ADC、信號處理加速器🧎🏻♂️、電源管理等關鍵功能的單芯片智能毫米波傳感器SoC🚘。廣泛應用於自動駕駛、無人機、機器人🧎♂️、智能家居等多樣化智能物聯網領域。
2.超低功耗SoC系統開發項目
·業界首枚14納米CMOS無線低功耗WiFi SoC芯片，應用於搭建無線傳感網、物聯網和可穿戴設備🤹🏻。
3.先進CMOS工藝下高性能無線收發機的設計
·超過15年包括收發機前端的無線射頻元件，無線系統開發及射頻電路數字化創新。經歷從90納米到14納米的無線系統開發👩🏼🎓，開發出用於低功耗和低成本無線系統的顛覆性的無線收發機的架構，並應用於英特爾無線通訊產品中🏄🏿♀️⛔️。
4.高性能CMOS數字射頻功率放大器（PA）
·領導並研發了多款高性能CMOS功率放大器👩🦽➡️。其中首創的outphasing和dynamic power control數字式功率放大器👩🦳，成果證明了用數字方法實現射頻的射頻功率放大器，性能可以超越傳統的設計方式🗾，成為行業性能標桿。
5.全集成基於高性能GaN HEMT的微波電路（MMIC）
·凈化間微波GaN HEMT器件工藝開發，完成從微波器件製造🤴🏼，工藝集成到電路建模和設計流程，設計開發包括PA🎗，VCO和LNA在內的高性能微波電路🏉。
·首創了可集成在化合物半導體上的可調製鐵電材料器件製造工藝👨🏽🏭，極大減小微波元件的尺寸👩🏽⚕️，並設計高性能自適應的微波電路。
近期論文／報告選摘
1. K. Xu, B. Yu, J. Hu, Y. Li, R. B. Staszewski, and Hongtao Xu, “A 50μW Ring-Type Complementary Inverse-Class-D Oscillator with 191.4dBc/Hz FoM and 205.6dBc/Hz FoMA”, 2023 Symposium on VLSI Circuits (VLSI-C), 2023, June 11-16
2. C. Hu, D. Zheng, Y. Yin, J. Lin, Y. Li, W. Li, and Hongtao Xu, “A 0.7-to-2.5GHz Sliding Digital-IF Quadrature Digital Transmitter Achieving >40% System Efficiency for Multi-Mode NB-IoT/BLE Applications,” IEEE International Solid-State Circuits Conference (ISSCC), 2023, 472-473
3. J. Li, Y. Yin, H. Chen, J. Lin, Y. Li, X. Jia, Z. Hu, X. Zhang, and Hongtao Xu, “A 4.1W Quadrature Doherty Digital Power Amplifier with 33.6% Peak PAE in 28nm Bulk CMOS,” IEEE International Solid-State Circuits Conference (ISSCC), 2023, 370-371
4. W. Zeng, L. Gao, N. Sun, Hongtao Xu, Q. Xue, X. Zhang, “A 19.7-to-43.8GHz Power Amplifier with Broadband Linearization Technique in 28nm Bulk CMOS,” IEEE International Solid-State Circuits Conference (ISSCC), 2023 372-373
5. C. Wang, W. Li, F. Chen, W. Zuo, Y. Pu, and Hongtao Xu, “A 0.5–4GHz Full-Duplex Receiver with Multi-Domain Self-Interference Cancellation Using Capacitor Stacking Based Second-Order Delay Cells in RF Canceller”, 2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), 2022, June 19-21
6. C. Hu, Y. Yin, T. Li, Y. Liu, L. Xiong, and Hongtao Xu, “A Fully-Integrated Wideband Digital Polar Transmitter with 11-bit Digital-to-Phase Converter in 40nm CMOS”, IEEE Journal of Solid-State Circuits (JSSC), 2023, 58(2), 462-473
7. C-C. Yang , T. Li, C. Xu, Y. Chen, Y. Lin , Y. Yin, and Hongtao Xu, A Low-Phase Error Cascode CMOS Variable Gain Amplifier With 180◦ Phase Control for Phase Array Systems, IEEE Transactions on Microwave Theory and Techniques (TMTT), 2022
8. T-Q Fan, B. Jiang, R. Liu, J. Xiu, Y. Lin, and H. Xu, “A Novel Double U-slot Microstrip Patch Antenna Design for Low-Profile and Broad Bandwidth Applications”, IEEE Transactions on Antennas and Propagation (TAP), 2022
9. Y. Li, Y. Yin, D. Zheng, X. Jia, J. Lin, F. Gao, Y. Zhu, L. Xiong, N. Yan, Y. Lu, and Hongtao Xu, “A 15-bit Quadrature Digital Power Amplifier with Transformer-Based Complex Domain Efficiency Enhancement”, IEEE Journal of Solid-State Circuits (JSSC), 2021
10. X. Luo, H. J. Qian, Y. Yin, Hongtao Xu, “Empowering Multifunction: Digital Power Amplifiers, the Last RF Frontier of the Analog and Digital Kingdoms”, IEEE Microwave Magazine, 2020
11. Y. Yin, L. Xiong, Y. Zhu, B. Chen, H. Min, and Hongtao Xu, “A Broadband Switched-Transformer Digital Power Amplifier for Deep Back-Off Efficiency Enhancement”, IEEE Journal of Solid-State Circuits (JSSC), 2020
12. D. Zheng, Y. Yin, Y. Zhu, L. Xiong, Y. Li, N. Yan, and Hongtao Xu, “A 15b Quadrature Digital Power Amplifier with Transformer-Based Complex-Domain Power-Efficiency Enhancement”, 2020 IEEE International Solid-State Circuits Conference (ISSCC), 2020
13. T. Li, L Xiong, Y. Yin, Y. Liu, H. Min, N. Yan, and Hongtao Xu, “A Wideband Digital Polar Transmitter with Integrated Capacitor-DAC-Based Constant-Envelope Digital-to-Phase Converter”, 2019 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), 2019
14. Y. Yin, L. Xiong, Y. Zhu, B. Chen, H. Min, and Hongtao Xu, “A Compact Dual-Band Digital Polar Doherty Power Amplifier Using Parallel-Combining Transformer”, IEEE Journal of Solid-State Circuits (JSSC), 2019
15. W. Luo, Y. Yin, L. Xiong, T. Li, and Hongtao Xu, “Nonlinear Analytical Model for Switched-Capacitor Class-D RF Power Amplifiers”, IEEE Transactions on Circuits and Systems I: Regular Papers (TCAS-I), 2019
16. Y. Yin, Y. Zhu, L. Xiong, W. Luo, B. Chen, T. Li, N. Yan, and Hongtao Xu, “A Compact Transformer-Combined Polar/Quadrature Reconfigurable Digital Power Amplifier in 28nm Logic LP CMOS”, IEEE Journal of Solid-State Circuits (JSSC invited), 2019
17. L. Xiong, T. Li, Y. Yin, H. Min, N. Yan, and Hongtao Xu, “A Broadband Switched-Transformer Digital Power Amplifier for Deep Back-Off Efficiency Enhancement”, 2019 IEEE International Solid-State Circuits Conference (ISSCC), 2019
18. Y. Zhu, L. Xiong, Y. Yin, W. Luo, B. Chen, T. Li, Hongtao Xu, “A Compact 2.4GHz Polar/Quadrature Reconfigurable Digital Power Amplifier in 28nm Logic LP CMOS”, 2018 IEEE Custom Integrated Circuits Conference (CICC), 2018 (Best Student Paper final list).
19. Y. Yin, L. Xiong, Y. Zhu, B. Chen, H. Min, Hongtao Xu, “A Compact Dual-Band Digital Doherty Power Amplifier Using Parallel- Combining Transformer for Cellular NB-IoT Applications”, 2018 IEEE International Solid-State Circuits Conference (ISSCC), 2018
20. P. Madoglio, Hongtao Xu, K. Chandrashekar et al., “A 2.4GHz WLAN Digital Polar Transmitter with Synthesized Digital-to-Time Converter in 14nm Trigate/FinFET Technology for IoT and Wearable Applications”, 2017 IEEE International Solid-State Circuits Conference (ISSCC), 2017
21. A. Ravi, P. Madoglio, Hongtao Xu et al., “A 2.4-GHz 20–40-MHz Channel WLAN Digital Outphasing Transmitter Utilizing a Delay-Based Wideband Phase Modulator in 32-nm CMOS”, IEEE Journal of Solid-State Circuits (JSSC), 2012
22. W. Tai, Hongtao Xu, Ravi, A. et al., “A Transformer-Combined 31.5 dBm Outphasing Power Amplifier in 45 nm LP CMOS With Dynamic Power Control for Back-Off Power Efficiency Enhancement”, IEEE Journal of Solid-State Circuits (JSSC), 2012
23. P. Madoglio, A. Ravi, Hongtao Xu et al., “A 20dBm 2.4GHz digital outphasing transmitter for WLAN application in 32nm CMOS”, 2012 IEEE International Solid-State Circuits Conference (ISSCC), 2012
24. W. Tai, Hongtao Xu, A. Ravi et al., “A 31.5dBm Outphasing Class-D Power Amplifier in 45nm CMOS with Back-Off Efficiency Enhancement by Dynamic Power Control”. 2011 European Solid-State Circuits Conference (ESSCIRC), 2011
25. Hongtao Xu, Y. Palaskas, A. Ravi et al., “A Flip-Chip-Packaged 25.3 dBm Class-D Outphasing Power Amplifier in 32 nm CMOS for WLAN Application”, IEEE Journal of Solid-State Circuits (JSSC invited), 46(7), 2011
26. Y. Tan, Hongtao Xu, M.A. El-tanani et al., “A flip-chip-packaged 1.8V 28dBm class-AB power amplifier with shielded concentric transformers in 32nm SoC CMOS”, 2011 IEEE International Solid-State Circuits Conference (ISSCC), 2011
27. Hongtao Xu, Y. Palaskas, A. Ravi et al., A highly linear 25dBm outphasing power amplifier in 32nm CMOS for WLAN application”, 2010 European Solid-State Circuits Conference (ESSCIRC), 2010
28. Hongtao Xu, Y. Palaskas, A. Ravi et al., A 28.1dBm class-D outphasing power amplifier in 45nm LP digital CMOS, 2009 Symposium on VLSI Circuits (VLSI-C), 2009
