Optimal design of a large dual-polarization microstrip reflectarray with China-coverage patterns for satellite communications

作     者：Gang ZHAO Yong-chang JIAO Guan-tao CHEN Gang ZHAO;Yong-chang JIAO;Guan-tao CHEN

作者机构：National Key Laboratory of Antennas and Microwave TechnologyXidian UniversityXi’an 710071China 

出 版 物：《Frontiers of Information Technology & Electronic Engineering》 (信息与电子工程前沿（英文版）)

年 卷 期：2020年第21卷第1期

页      面：159-173页

核心收录：

学科分类：0810[工学-信息与通信工程] 080904[工学-电磁场与微波技术] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0839[工学-网络空间安全] 08[工学] 0835[工学-软件工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Key Research and Development Program of China(No.2017YFB0202102) 

主　　题：Reflectarray Dual-polarization Shaped beam Phase-only synthesis 

摘      要：A large dual-polarization microstrip reflectarray with China-coverage patterns in two operating bands is *** sufficiently compensate for the spatial phase delay differences in two operating bands separately,a three-layer rectangular patch element is addressed,which is suitable for the large dual-polarization *** to the complexly shaped areas and high gain requirements,there are more than 25000 elements in the reflectarray,making it difficult to design,due to more than 150000 optimization ***,the discrete fast Fourier transform(DFFT)and the inverse DFFT are used to establish a one-to-one relationship between the aperture distribution and the far field,which lays a foundation for optimizing the shaped-beam *** intersection approach,based on the alternating projection,is used to obtain the desired reflection phases of all the elements at some sample frequencies,and a new method for producing a suitable initial solution is proposed to avoid undesired local *** validate the design method,a dual-polarization shaped-beam reflectarray with 7569 elements is fabricated and *** measurement results are in reasonable agreement with the simulation ***,for the large broadband reflectarray with the minimum differential spatial phase delays in the operating band,an approach for determining the optimal position of the feed is *** simultaneously find optimal dimensions of each element in two orthogonal directions,we establish a new optimization model,which is solved by the regular polyhedron ***,a dual-band dual-polarization microstrip reflectarray with 25305 elements is designed to cover the continent of *** results show that patterns of the reflectarray meet the China-coverage requirements in two operating bands,and that the proposed optimization method for designing large reflectarrays with complexly shaped patterns is reliable and efficient.