物理学报Issue(7)：078402-1-078402-7,7.DOI:10.7498/aps.63.078402
具有陡降特性的新型混合单元频率选择表面
A novel frequency selective surface of hybrid-element typ e with sharply decreased stop-band
摘要
Abstract
Frequency selective radome is one of the most important applications of frequency selective surface (FSS). In order to obtain better stealth performance, a novel element FSS, based on a regular slot element FSS, is presented in this paper. The novel element consists of a slot element in the center and at least two slot strips placed on the periodic boundary. We call such FSS the “hybrid-element type FSS” because it exhibits characteristics of both slot type and patch type FSS. Simulation and optimization work is carried out by using a period moment method and a discrete particle swarm optimization method based on the application requirements of a missile radome. Simulation results show that the hybrid-element type FSS has much steeper transition section between pass-band and stop-band, and much lower transmittance in stop-band when compared with the corresponding slot type FSS. The new FSS also has much lower insertion loss in pass-band, much thinner thickness, much simple structure and fabrication process when compared with the ordinary two-layer FSS. Equivalent sample plate is fabricated using printed circuit method and tested using the free space method. Good fit between simulation and testing results verify the accuracy and feasibility of this novel FSS design. The hybrid-element type FSS is especially suitable for the stealth radome when woking frequencies of both sides are very close. It provides a simple and feasible approach for developing frequency selective radome.关键词
频率选择表面/混合单元Key words
frequency selective surface/hybrid element引用本文复制引用
王岩松,高劲松,徐念喜,汤洋,陈新..具有陡降特性的新型混合单元频率选择表面[J].物理学报,2014,(7):078402-1-078402-7,7.基金项目
长春光机所重点实验室基金(批准号：YZGX1SJ13A)资助的课题.* Project supported by the Foundation for Key Laboratory of CIOMP, China (Grant No.YZGX1SJ13A) （批准号：YZGX1SJ13A）
