An Efficient Rotationally Symmetric Approach for the Design of Sparse Conformal Arrays in Wide Angle Scanning

Authors

  • Pengfei Gu Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing, China
  • Zhenhong Fan Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing, China
  • Dazhi Ding Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing, China
  • Rushan Chen Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing, China

Keywords:

Conformal sparse array, rotational symmetry, wide angle scanning

Abstract

This paper addresses a novel rotationally symmetric technique with multiple constraints for sparse conformal array synthesis. The purpose is to synthesis a sparse optimal common element positions on the conformal surface varying multiple patterns of wide angle scanning with the behavior of low sidelobe levels (SLL). The conformal surface aperture is partitioned into several rotationally symmetric sections. The element positions and element numbers of only one section need to be optimized, which contribute to the reduction of optimizing variables and computation resources. We formulate the synthesis problem as a constrained optimization problem, which takes the peak sidelobe level (PSLL) as the fitness function, and sets the total number of array elements, the minimum spacing between two adjacent elements to form multiple constraints. The Brain Storm Optimization (BSO) is further exploited into the synthesis problem with multiple constraints. A set of representative numerical examples are presented to assess the advantages and effectiveness of the proposed method.

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Author Biographies

Pengfei Gu, Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing, China

Pengfei Gu was born in Nanjing, China. He received the B.S. and Ph.D. degrees in Electromagnetic Field and Microwave Technique from the School of Electrical Engineering and Optical Technique, Nanjing University of Science and Technology, Nanjing, China, in 2012 and 2019 respectively. He is currently pursuing postdoctoral in Electronic and Communication Engineering at Nanjing University of Science and Technology. His research interests are antennas, array optimizations, array sparse and computational electromagnetics.

Zhenhong Fan, Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing, China

Zhenhong Fan was born in Jiangsu, China, in 1978. He received the M.Sc. and Ph.D. degrees in Electromagnetic Field and Microwave Technique from the Nanjing University of Science and Technology (NJUST), Nanjing, China, in 2003 and 2007, respectively. In 2006, he was a Research Assistant with the Center of wireless Communication, City University of Hong Kong. He is currently a Professor of Electronic Engineering with NJUST. He is the author or a coauthor of over 50 technical articles. His current research interests include computational electromagnetics, and electromagnetic scattering and radiation.

Dazhi Ding, Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing, China

Dazhi Ding received the B.Sc. and Ph.D. degrees in Electromagnetic Field and Microwave Technique from Nanjing University of Science and Technology (NJUST), Nanjing, China, in 2002 and 2007, respectively. During 2005, he was with the Center of wireless Communication in the City University of Hong Kong, Kowloon, as a Research Assistant. He joined the Department of Electrical Engineering, Nanjing University of Science and Technology (NJUST), Nanjing, China, where he became a Lecturer in 2007. In 2014, he was promoted to Full Professor in NJUST. He was appointed Head of the Department of Communication Engineering, NJUST in September 2014. He is the author or coauthor of over 30 technical papers. His current research interests include computational electromagnetics, electromagnetic scattering and radiation. He has authored or coauthored more than 80 papers. He is the recipient of the Foundation for China Excellent Young Investigators presented by the National Science Foundation (NSF) of China in 2015.

Rushan Chen, Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing, China

Rushan Chen received the B.Sc. and M.Sc. degrees from the Department of Radio Engineering, Southeast University, China, in 1987 and 1990, respectively, and the Ph.D. degree from the Department of Electronic Engineering, City University of Hong Kong, in 2001. He joined the Department of Electrical Engineering, Nanjing University of Science and Technology (NJUST), China, where he became a Teaching Assistant in 1990 and a Lecturer in 1992. Since September 1996, he has been a Visiting Scholar with the Department of Electronic Engineering, City University of Hong Kong, first as Research Associate, then as a Senior Research Associate in July 1997, a Research Fellow in April 1998, and a Senior Research Fellow in 1999. From June to September 1999, he was also a Visiting Scholar at Montreal University, Canada. In September 1999, he was promoted to Full Professor and Associate Director of the Microwave and Communication Research Center in NJUST, and in 2007, he was appointed as the Head of the Department of Communication Engineering, NJUST. He was appointed as the Dean in the School of Communication and Information Engineering, Nanjing Post and Communications University in 2009. And in 2011 he was appointed as Vice Dean of the School of Electrical Engineering and Optical Technique, NJUST. Currently, he is a principal investigator of more than 10 national projects. His research interests mainly include computational electromagnetics, microwave integrated circuit and nonlinear theory, smart antenna in communications and radar engineering, microwave material and measurement, RF-integrated circuits, etc. He has authored or coauthored more than 260 papers, including over 180 papers in international journals.

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Published

2021-03-08

How to Cite

[1]
Pengfei Gu, Zhenhong Fan, Dazhi Ding, and Rushan Chen, “An Efficient Rotationally Symmetric Approach for the Design of Sparse Conformal Arrays in Wide Angle Scanning”, ACES Journal, vol. 36, no. 3, pp. 235–244, Mar. 2021.

Issue

2021: Vol 36 Iss 3

Section

Articles