Chin. Phys. B ›› 2012, Vol. 21 ›› Issue (12): 128401-128401.doi: 10.1088/1674-1056/21/12/128401

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

A novel four-legged loaded element thick-screen frequency selective surface with a stable performance

唐光明, 苗俊刚, 董金明   

  1. School of Electronic and Information Engineering, Beihang University, Beijing 100191, China
  • 收稿日期:2012-04-09 修回日期:2012-05-30 出版日期:2012-11-01 发布日期:2012-11-01

A novel four-legged loaded element thick-screen frequency selective surface with a stable performance

Tang Guang-Ming (唐光明), Miao Jun-Gang (苗俊刚), Dong Jin-Ming (董金明)   

  1. School of Electronic and Information Engineering, Beihang University, Beijing 100191, China
  • Received:2012-04-09 Revised:2012-05-30 Online:2012-11-01 Published:2012-11-01
  • Contact: Tang Guang-Ming E-mail:gmt971@ee.buaa.edu.cn

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摘要： Because thick-screen frequency selective surface (FSS) has not only a broad bandwidth but also an advantage of overcoming multilayer FSS shortcoming of complex structure and low transmittance of centre frequency due to the cascade of FSSs, it has a potential application to the stealth curved streamlined radome. However, there are an unsteadiness of centre frequency in a wide range of incident angle and another unsteadiness of polarization in a big incident angle. In order to solve the problems, in this paper we provide a novel four-legged loaded element thick-screen FSS. The structure is analysed and simulated using mode matching method and moment method. The centre frequency, the transmittance of centre frequency, and bandwidth of the structure are investigated when some parameters including the polarization at a big incident angle and the incident angles of TE & TM waves are changed. The novel four-legged loaded element thick-screen FSS has better transmission properties with a better steadiness of polarization and incident angle independence. The novel structure of four-legged loaded element thick-screen FSS provides a valuable reference for the application in stealth curved streamlined radome.

关键词: thick-screen frequency selective surfaces (FSS), mode matching method, moment method, incident angles independence, polarization independence

Abstract: Because thick-screen frequency selective surface (FSS) has not only a broad bandwidth but also an advantage of overcoming multilayer FSS shortcoming of complex structure and low transmittance of centre frequency due to the cascade of FSSs, it has a potential application to the stealth curved streamlined radome. However, there are an unsteadiness of centre frequency in a wide range of incident angle and another unsteadiness of polarization in a big incident angle. In order to solve the problems, in this paper we provide a novel four-legged loaded element thick-screen FSS. The structure is analysed and simulated using mode matching method and moment method. The centre frequency, the transmittance of centre frequency, and bandwidth of the structure are investigated when some parameters including the polarization at a big incident angle and the incident angles of TE & TM waves are changed. The novel four-legged loaded element thick-screen FSS has better transmission properties with a better steadiness of polarization and incident angle independence. The novel structure of four-legged loaded element thick-screen FSS provides a valuable reference for the application in stealth curved streamlined radome.

Key words: thick-screen frequency selective surfaces (FSS), mode matching method, moment method, incident angles independence, polarization independence

中图分类号:  (Radiowave and microwave (including millimeter wave) technology)

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