A HYBRID FEM-UTD METHOD FOR THE RADIATION PATTERN PREDICTION OF ANTENNAS ON AN ELECTRICALLY LARGE PLATFORM
This paper introduces a hybrid approach to calculate the radiation pattern of antenna mounted on an electrically large conductive platform.This approach is more universal than the conventional relevant method.The finite element method (FEM) and uniform theory of diffraction (UTD) are combined,so that the FEM computes the free space radiation field of the antenna while the UTD determines the total field of the antenna radiation in the presence of the platform,using the results from FEM as the incident field.Based on this approach,the radiation pattern of the antenna mounted on the platform can be calculated with high efficiency and good accuracy.To exemplify the FEM-UTD method,two types of antennas mounted on different locations of the conductive background are studied,with good agreement between the results produced by FEM-UTD and that by FEM.Besides the higher computation speed,the FEM-UTD is less dependent on the specific geometry involved.Thus,the hybrid approach may also be applied to computing the radiation pattern of other antennas such as monopoles,slot antennas,microstrip antennas,and other low-profile antennas on a curved surface.
Electrically large platform Finite element method (FEM) Hybrid method Spiral antenna Uniform theory of diffraction (UTD)
Zehe Zhu Hongli Peng Zhong Yu Gan Guo Baiqing Zong
Key Laboratory of Educational Ministry for High-Speed Electronic Systems Design and EMC Research,Sha ZTE Corporation,Shanghai 201203,China China Academy of Telecommunication Research,Beijing 100035,China
国际会议
杭州
英文
1286-1290
2012-10-30（万方平台首次上网日期，不代表论文的发表时间）