Liao, Huailin
Professor
Research Interests: RFIC/MMIC, RF device and modeling
Office Phone: 86-10-6275 2549
Email: liaohl@pku.edu.cn
Liao, Huanlin is a professor in the Department of Computer Science and technology, School of EECS. He obtained his B.Sc. from Beijing Normal University in 1995, and Ph.D. from Peking University in 2001 respectively. He was a senior research scientist in Institute of Microelectronics, A*STAR, Singapore, during 2001~2004. His research interests include CMOS RFIC/MMIC and RF device & modeling.
Dr. Liao has published more than 100 research papers, and most of them are published in IEEE conferences and journals, such as IEEE JSSC, TCAS-I,T-MTT, EDL, TED. He also been authorized more than 30 Chinese Patents. He was awarded Natural Science Award of Beijing(2008), Science and Technology Innovation Award of Shenzhen(2009)，Yang-Wang Teaching and Research Award(2012). He is serving as Editorial Board of Journal of Semiconductor，and Vice chair of IEEE Solid-State Circuits Society of Beijing Chapter.
Dr. Liao has more than ten research projects including NSFC, 863 project, Major National R&D project, etc. His research achievements are summarized as follows:
1) RF device & modeling: They are play important roles in CMOS RFIC/MMIC design. RF power amplifier, which is the one of major building blocks for RF transceivers, suffers from the low output power and efficiency due to lower breakdown voltage of MOSFET in advanced CMOS technology. He proposed a CMOS fully compatible RF power device with high breakdown voltage to improve the performance of RF power amplifiers. Directional Coupler is a widely used passive device in RFIC/MMIC, however in CMOS technology is hard to be integrated due to high loss silicon substrate. For the first time, he proposed a CMOS fully integrated directional coupler with high isolation and low insertion loss. He also proposed physics based scalable models for integrated inductor and transformer, which are basic passive devices for RFIC/MMIC, to improve design efficiency.
2) Low power techniques: One major research topic in RFIC field for the applications such as Internet of Thing, wearable medical devices, is low power circuit and system architecture techniques, which bring great challenges to researchers. He proposed new circuits topologies and transceiver architectures to reduce the power consumption, such as analog baseband circuits with power efficiency operational amplifier, clock generation and low pass filter circuits in nana-Watt level and ultra low power RF transceiver using human body as antenna, etc.
3) Same frequency & same time RF techniques: This is emerging research topic in RFIC/MMIC, which will improve the usage efficiency of frequency spectrum. The same frequency interfering is the major challenge for the same frequency & same time RF transceivers. He proposed full integrated duplexer, interfering signal wideband cancellation and thermal noise cancellation techniques to reduce interfering impacts on the RF receiver.
