摘要
本文提出了一种具有宽带吸波和通带频率可调特性的吸波透波罩结构。这种吸波透波罩结构的周期单元尺寸等于10mm,仅为λ/30,结构的厚度仅为5.14mm。结构所采用的小型化周期单元能够提高入射角稳定性并延迟栅瓣出现的最低频率。由于周期单元的旋转对称性,入射波的极化对结构的透波和吸波特性影响很小。同时,这种结构的通带频率能够在0.5GHz到1.14GHz的范围内调整,可用作跳频通信。仿真结果显示这种吸波透波罩结构在6.8GHz到24GHz的频带内都有良好的吸波特性。
A miniaturized and tunable frequency selective structure with wideband absorbing properties was presented in paper. The period of radome was equal to 10 mm, which was λ/30 only. The thickness of structure has only 5.14 mm. The miniaturized elements may improve the angle stability and delay the lowest frequency at which grating lobe appears. Own to rotational symmetry elements, the polarization of incident wave has little influence on the transmission and absorbing property. The passband of structure can be tuned from 0.5GHz to 1.14 GHz and was able to frequency hopping communication. The simulation results show that the frequency selective structure has well absorbing performance from 6.8GHz to 24 GHz.
出处
《微波学报》
CSCD
北大核心
2016年第S2期521-524,共4页
Journal of Microwaves
关键词
宽带吸波
通带可调
小型化
吸波透波罩
broadband absorbing
tunable passband
miniaturized
absorptive/ transmissive radome
