Transmission properties of frequency selective structures with air gaps  

作　　者：蒙志君 王立峰 吕明云 武哲 

机构地区：[1]School of Aeronautic Science & Engineering,Beihang University

出　　处：《Chinese Physics B》2010年第12期460-465,共6页中国物理B（英文版）

基　　金：Project supported by the Major Research Plan of the National Natural Science Foundation of China (Grant No. 90305026)

摘　　要：The transmission properties of compound frequency selective structures with dielectric slab and air gaps were investigated by computation and experimentation. Mechanism analyses were also carried out. Results show that the air gaps have a distinct influence on the transmission properties. Resonant frequency of the structure would increase rapidly when the air gap appears. After the gap gets larger to a specific value, generally 1/5 wavelength corresponding to the resonant frequency, the transmission properties would change periodically with the gap thickness. The change of transmission properties in one period has a close relationship with the dielectric thickness. These results provide a new method for designing a bandpass radome of large incidence angle and low loss with the concept of stealth shield radome.The transmission properties of compound frequency selective structures with dielectric slab and air gaps were investigated by computation and experimentation. Mechanism analyses were also carried out. Results show that the air gaps have a distinct influence on the transmission properties. Resonant frequency of the structure would increase rapidly when the air gap appears. After the gap gets larger to a specific value, generally 1/5 wavelength corresponding to the resonant frequency, the transmission properties would change periodically with the gap thickness. The change of transmission properties in one period has a close relationship with the dielectric thickness. These results provide a new method for designing a bandpass radome of large incidence angle and low loss with the concept of stealth shield radome.

关 键 词：air gap frequency selective structure periodic array RADOME 

分 类 号：O441.6[理学—电磁学]