Seminar talk on "ESPAR Antenna Arrays"

#Antenna #Arrays #5G #4G/LTE #wireless #communication

IEEE Kitchener-Waterloo Section MTT Chapter has organised a Seminar Talk on the topic "ESPAR Antenna Arrays" at University of Waterloo.

Speaker: Prof. Xun Gong, University of Central Florida, Florida, USA. 

Invited by: Prof. Raafat Mansour

Date and Time: August 8, 2019 at 11:00 am in EIT 3142.

Abstract
Wireless communications systems have rapidly evolved over the last decade, leading to an explosion of mobile data traffic. Since more and more wireless devices and sensors are being connected, the transition from the current 4G/LTE mobile network to 5G or even 6G is expected to happen within the next decade. In order to improve signal-to-noise ratio (SNR), system capacity and link budget,beam steerable antenna arrays are desirable due to their advantages in spatial selectivity and high directivity. Electronically steerable parasitic array radiator (ESPAR) can achieve low-cost continuous beam steering using varactor diodes with significant reduction in the number of phase shifters. This presentation focuses on how to achieve 2-D beam steering with enhanced fractional bandwidth(FBW) using cavity-backed slot (CBS) ESPAR antennas. A 20-element CBS ESPAR antenna array is designed and fabricated based on a CBS cross subarray. This ESPAR array is able to steer the main beam from+45 to-45 in the E plane and from +40 to -40 in the H plane,respectively,without grating lobes in either plane. The impedance matching is maintained below -10dB from 6.0 to 6.4GHz (6.4%FBW) at all scan angles. In addition, this CBS ESPAR exhibits minimum beam squint at all scan angles within the impedance matching bandwidth.

Speaker Biography:

Xun Gong received his B.S. and M.S. degrees in Electrical Engineering from FuDan University in 1997 and 2000,respectively, and the Ph.D. degree in Electrical Engineering from the University of Michigan, Ann Arbor in 2005. He is currently a full professor in the Department of Electrical and Computer Engineering at University of Central Florida (UCF). He was with the Birck Nanotechnology Center at Purdue University, West Lafayette,IN, as a post-doctoral research associate. He served as the General Chair of the 2016 International Workshop on Antenna Technology (iWAT) and 2012 IEEE Wireless and Microwave Technology Conference (WAMICON), the Operations Chair of 2014 IEEE MTT-S International Microwave Symposium (IMS) and the TPC Chair for 2013 IEEE AP-S/URSI International Symposium on Antennas and Propagation. He served as the IEEE AP/MTT Chapter Chair in Orlando, FL during 2007-2010. He is the associate editor of IEEE Transactions on Microwave Theory and Techniques (TMTT). He has been the recipient of the NSF Faculty Early CAREER Award for 2009-2014. He has published 116 referred Journal articles and conference papers. His current research interests include microwave filters and passive components, wireless passive sensors for harsh environment applications, antennas, phased arrays, and reflect arrays, flexible electronics, micromachining, advanced packaging, ceramic materials, polymer materials, ferro-electric materials, metamaterials, and material characterization. 

• Date: 08 Aug 2019
• Time: 03:00 PM UTC to 04:30 PM UTC
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• EIT- 3142, 200 University Ave W
• Waterloo, Ontario
• Canada N2L 3G1

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• Contact Event Host

• navjot.k.khaira@ieee.org

• Starts 02 August 2019 08:52 PM UTC
• Ends 08 August 2019 03:00 PM UTC
• No Admission Charge

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