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Isoflux Phased Array Design for Cubesats
时间:2018-01-08 11:26    点击:   所属单位:电子工程学院
讲座名称 Isoflux Phased Array Design for Cubesats
讲座时间 2018-01-11 09:00:00
讲座地点 北校区图书馆西裙楼三楼学术报告厅
讲座人 Prof. Atef Z Elsherbeni, Colorado School of Mines, IEEE Fellow
讲座人介绍 Prof. Atef Z. Elsherbeni received his Ph.D. degree in Electrical Engineering from Manitoba University, Winnipeg, Manitoba, Canada, in 1987.  Dr. Elsherbeni was with the University of Mississippi from 1987 to 2013. He was a Finland Distinguished professor from 2009 to 2011.  He joined the Electrical Engineering and Computer Science Department at Colorado School of Mines in August 2013 as the Dobelman Distinguished Chair Professor. Currently he is the Head of the Electrical Engineering Department.  His research interest includes the scattering and diffraction of EM waves, finite-difference time-domain analysis of antennas and microwave devices, field visualization and software development for EM education, interactions of electromagnetic waves with the human body, RFID and sensor integrated FRID systems, reflector and printed antennas and antenna arrays, and measurement of antenna characteristics and material properties. His academic achievements includes: Funded Research Grants with a total amount of  $11,413,903, 13 books, 29 book chapters, 171 journal publications, 15 developed software packages, 56 (35 MS and 21 PhD) graduate students advised, 40 invited presentations, 221 proceedings publications, 174 conference abstracts, 74 technical reports, 35 short courses offered, 43 invited talks. Dr. Elsherbeni is a Fellow member of IEEE and ACES. He is the Editor-in-Chief for ACES Journal.   He was the general Chair for the 2014 APS-URSI Symposium and was the president of ACES Society from 2013 to 2015.
讲座内容 This talk will present the optimization and design process of an isoflux phased array for Cubesats in low Earth orbit (LEO) operating at the upper end of the X-band. At this frequency, the array becomes small enough to fit on the 1U face of a Cubesat based on a compromise between the number of elements needed to create a reasonable isoflux pattern and the aperture size of the array in wavelengths. The isoflux array allows for effective communication over a large portion of Earth’s surface. Moreover, the array does not require any mechanical parts that can fail on launch or over the lifetime of the satellite, thus increasing reliability. An optimization process based on the genetic algorithm is used to create a multi-ring concentric circular phased array that creates a near-isoflux power pattern on the Earth surface. The genetic algorithm yields appropriate element spacing, amplitude, and phase shifts.  Simple microstrip patch antennas are used for the array design for proof of concept, with full wave simulation demonstrating the array performance.




西安电子科技大学电子工程学院
超高速电路设计与电磁兼容教育部重点实验室
天线与微波技术重点实验室
国际交流与合作处
IEEE Xi'an Section, AP/MTT-Chapter
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