学术报告会通知 题 目: A decade-bandwidth antenna-the Eleven antenna for ultra-wideband applications,specially for future ultra-wideband radio telescopes 报告 人： Jian Yang (Associate Professor,Chalmers Univ. of Technology,Sweden) 时 间： 2010年12月15日（周三）上午9:30-11:00 地 点： 东南大学(四牌楼校区) 李文正楼 6楼 614会议室 主 办： 东南大学毫米波国家重点实验室 IEEE AP-MTT-EMC Joint Nanjing Chapter 江苏省电子学会天线与微波专委会
内容简介： The Eleven antenna is a decade-bandwidth log-periodic dual-folded-dipole array, developed at Chalmers University of Technology (Chalmers) since 2005. It has some unique properties such as a nearly constant beamwidth with about 11 dBi directivity and a fixed phase center location over a decade bandwidth. The Eleven antenna has also a low profile and simple geometry. This lecture is intended to present the latest developments of a cryogenically-coolable Eleven feed system for VLBI2010 and SKA (Square Kilometer Array), which includes the integration and co-design with cryogenic low noise amplifiers (LNAs). 报告人简介： Jian Yang (Senior Member, IEEE) received the B.S. degree from the Nanjing University of Science and Technology, Nanjing, China, in 1982, and the M.S. degree from the Nanjing Research Center of Electronic Engineering, Nanjing, China, in 1985, both in electrical engineering, and the Swedish Licentiate and Ph.D. degrees from the Chalmers University of Technology, Gotherberg, Sweden, in 1998 and 2001, respectively. From 1985 to 1996, he was with the Nanjing Research Institute of Electronics Technology, Nanjing, China, as a Senior Engineer. From 1999 to 2005, he was with the Department of Electromagnetics, Chalmers University of Technology as a Research Engineer. During 2005 and 2006, he was with COMHAT AB as a Senior Engineer. From 2006, he has been an Assistant Professor at the Department of Signals and Systems, Chalmers . From 2010, he has been an Associate Professor at the same Department, Chalmers. His research interests include ultra-wideband antennas, UWB radar systems, hat-fed antennas, reflector antennas, radome design, and computational electromagnetics.
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