Joint Chapter Meeting:

Miniaturization of Ultra-wideband Antennas

Friday March 6, 2009, 6PM
ECE530 ECE Bldg, University of Arizona

Dr Zhi Ning Chen  - IEEE Fellow and Antennas and Propogation Distinguished Lecturer, Institute for Infocomm Research, Singapore

This talk briefly introduces design challenges of ultra-wideband (UWB) antennas. Special design considerations are presented from a systems point of view, followed by some state-of-the-art solutions. Then, the miniaturization technology of UWB antennas is addressed. The planar designs are highlighted due to their unique merits and wide adoption in applications. First, the ground plane dependence of the antenna performance in small antenna design is addressed. Using a newly developed technique, the dependence of small antenna performance on system ground plane is alleviated. Based on this concept, the antenna is designed to fit the size of wireless USB dongle. Furthermore, an innovative compact diversity UWB antenna shows the advantage of ground-independence small antenna in diversity applications. Last, a UWB antenna integrated with bandpass filter is proposed to reduce the overall size of devices by using the concept of co-design. In the end of the talk, the trend of UWB antenna R&D is offered according to application and market demands.

Dr. Zhi Ning Chen received his BEng, MEng, PhD, and DoE (2003) degrees in Electrical Engineering from Institute of Communications Engineering, China and University of Tsukuba, Japan, respectively. From 1988-1995, he worked as Lecturer, Postdoctoral Fellow and later Associate Professor at Institute of Communications Engineering and Southeast University, China. From 1995-1997, he joined in City University of Hong Kong, China as Research Assistant, later Research Fellow. In 1997, he conducted his research at University of Tsukuba, Japan as JSPS Fellow. In 2001 and 2004, he visited University of Tsukuba under JSPS Fellowship Program.

In 2004, he worked at IBM Watson Research Center, USA as Academic Visitor. Since 1999, he has worked with Institute for Infocomm Research as Member of Technical Staff (MTS) and later Principal MTS and is currently Principal Scientist and Head for RF & Optical Department. He is concurrently holding guest professorships at Southeast University, Nanjing University, Shanghai Jiao Tong University, and National University of Singapore. He has also been Technical Advisor of Compex Systems since 2006.

Dr Chen has organized many international events as general and, technical program committee chairs. He founded IEEE International Workshop on Antenna Technology (iWAT) in 2005. He has delivered invited talks, keynote speeches and short courses at conferences, and serves several international journals as Editor, Associate Editor, Guest Editor, and Reviewer.

 Dr Chen has published more than 220 journal and conference papers and authored and edited the books “Broadband Planar Antennas”, “UWB Wireless Communication”, “Antennas for Portable Devices” and “Antennas for Fixed Base-stations in Wireless Communications” (to be published in 2009). He also contributed to the books of “UWB Antennas and Propagation for Communications, Radar, and Imaging” and “Antenna Engineering Handbook”. He is the co-/inventor of more than 20 granted and filed patents. Several of his antenna designs have been licensed to industry for production. His current research interest includes applied electromagnetics, antennas, and bio-electromagnetics.

Dr. Chen is a Fellow of the IEEE.

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