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Antennas for Mobile Terminals (90 minutes)
时间:2017-03-30 15:56    点击:   所属单位:电子工程学院
讲座名称 Antennas for Mobile Terminals (90 minutes)
讲座时间 2017-04-20 14:00:00
讲座地点 北校区图书馆系裙楼三楼报告厅
讲座人 Hanyang Wang
讲座人介绍 Hanyang Wang received the Ph.D. degree from Heriot-Watt University, Edinburgh, U.K., in 1995. He served as a Lecturer and an Associate Professor with Shandong University, Jinan, China, from 1986 to 1991. From 1995 to 1999, he was a Post-Doctoral Research Fellow with the University of Birmingham, Birmingham, U.K., and the University of Essex, Colchester, U.K. From 1999 to 2000, he was with Vector Fields Ltd., Oxford, U.K., as a Software Development and Microwave Engineering Consultant Engineer. He joined Nokia U.K. Ltd., Farnborough, U.K., in 2001, where he was a Mobile Antenna Specialist for 11 years. He joined Huawei Technologies after leaving Nokia, and he is currently the Chief Mobile Antenna Expert and the Head of the Mobile Antenna Technology Division. He is also an Adjunct Professor with the School of Electronics and Information Technology, Sichuan University, Chengdu, China. His current research interests include small antennas for mobile terminals, patch and slotted waveguide antennas and arrays for mobile communications and airborne radars, and numerical methods for the solutions of electromagnetic radiation and scattering problems. He holds over 40 granted and pending US/WO/PCT patents, and he has authored over 80 refereed papers on these topics. He was a recipient of the Title of Nokia Inventor of the Year in 2005 and the Nokia Excellence Award in 2011. He was also a recipient of the Huawei Individual Gold Medal Award in 2012 and the Huawei Team Gold Medal Award in 2013 and 2014, respectively. His patent was ranked number one among 2015 Huawei top ten patent awards. Dr. Wang is a Huawei Fellow, an IET/IEE Fellow, and an IEEE Senior Member. He is an Associate Editor of the IEEE Antennas and Wireless Propagation Letters. He is listed in Marquis Who’s Who in the World and the International Biographical Center, Cambridge, U.K.
讲座内容
General Topic: Antennas for Mobile Terminals (90 minutes)
Antennas for mobile terminals have been receiving considerable attention in recent years because of their wide applications in mobile phones, tablets, laptops, smart watches and body centric sensors. Over the years, the antenna design for mobile terminals has become increasingly difficult and challenging, especially for mobile terminals with metallic industry design (ID). This is mainly attributed to more and more LTE frequency bands, carrier aggregation (CA) and MIMO requirements. A typical smart phone should now have at least six antennas, including a 2G/3G/LTE main antenna, a LTE diversity antenna, a GPS antenna, a WiFi antenna, a WiFi MIMO antenna and a NFC antenna. Even more antennas would be required if 4 x 4 or 8 x 8 MIMO LTE is included. In this talk, the following topics will be addressed: (a) A brief introduction of Huawei mobile antenna research; (b) The evolution of mobile terminal antennas from the first generation to the fourth generation; (c) Small antennas for mobile terminals, in which various approaches of reducing antennas’ size are examined; (d) Multi-band antennas for mobile terminals; (e) Reconfigurable antennas including impedance tuning and aperture tuning for mobile terminal applications; (f) Transmit antenna selection and multi-antenna selection for circumventing the “death grip” problem for smart phones with metallic ID; (g) Challenges of current and future mobile antenna design.
Focused Topic: Analysis of Electromagnetic Energy Absorption in the Human Body for Mobile Terminals (30 minutes)
The human body’s absorption of electromagnetic fields from communication enabled devices has consistently been a research topic for both researchers from universities and companies in the mobile communication industry. The absorption of electromagnetic fields could mainly result in two consequences: (a) antenna radiation efficiency of the device could deteriorate dramatically; and (b) a large amount of the radiated power could be dissipated into the human body, such as the hand, ear, scalp and brain, which is defined and described by Specific Absorption Rate (SAR). A comprehensive analysis of electromagnetic field absorption by the human body has been carried out to explain and answer some of the key questions in this area.


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天线与电磁散射研究所              国际合作与交流处
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