Electromagnetic performance analysis of reflectorantennas with non-uniform errors along radius

作     者：Peiyuan Lian Congsi Wang Wei Wang Binbin Xiang Peiyuan Lian Congsi Wang Wei Wang Binbin Xiang

作者机构：Xinjiang Astronomical Observation Chinese Academy of Sciences Urumqi 830011 China 

出 版 物：《Journal of Systems Engineering and Electronics》 (系统工程与电子技术（英文版）)

年 卷 期：2016年第27卷第5期

页      面：961-967页

核心收录：

学科分类：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）] 08[工学] 0802[工学-机械工程] 0811[工学-控制科学与工程] 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 Basic Research Program of China(973 Program)(2015CB857100) the Foundation for Key Laboratory of Xinjiang Uygur Autonomous Region(2014KL012) the National Natural Science Foundation of China(51490660 51475349 51522507) 

主　　题：reflector antenna surface weighting function antennatolerance quality evaluation. 

摘      要：Based on the works of Greve and Rahmat-Samii, theelectromagnetic （EM） performance of the reflector antenna withnon-uniform surface errors along radius is further addressed. Amathematical model is developed to describe the weighting functionfor the non-uniform surface errors along radius. Then, somediscussions on the peak gain loss （PGL） and the first sidelobelevel increase （SLLI） caused by the non-uniform surface errors arepresented and several significant radiation characteristics of thereflector with non-uniform errors are pointed out. Last, based onthe proposed model, the weighted root mean square （RMS） valueof the surface errors is produced to evaluate the EM performanceand several representative cases with different non-uniform errorsare presented with good results. Results show that the weightedRMS value should be taken into account for a better quality evaluationof the reflector surface.