【摘要】 随着空间电磁环境的日益复杂，对天线罩无线通信的质量以及带外隐身提出了更高的要求。而频率选择表面（FSS）技术是一种常用技术。基于此，本文设计了一种作用于X波段的带通型孔径中心FSS结构。通过对比为原始十字缝隙FSS结构（Case1）以及变形FSS结构(Case2和Case3)，发现将Case1结构进行曲折操作得到的变形FSS结构(Case3)在平面以及曲面状态下均具有较好的传输性能稳定性。Case3结构的谐振频率为10.56GHz,-3dB带宽为1.52GHz，相对带宽为14.39%。当横电波(TE)和横磁波(TM)极化波的入射角度达到60°时，该结构的谐振频率偏移量均小于3.78%，因此，该结构具有较好的角度稳定性。当该FSS结构共形到圆心角为π/2、半径为95.54mm的柱面上时，在x极化和y极化电磁波垂直入射下，最大谐振频率偏移量为4.5%，因此，该结构也具有较好的共形稳定性。且该FSS结构采用具有较小的正切损耗（0.25mm）的介质基板可进一步提高结构的透波率。由于具有低剖面、较好的角度稳定性以及共形稳定性，该FSS结构在需要共形的无线通信领域中具有良好的应用前景。更多还原

【Abstract】 With the increasing complexity of the space electromagnetic environment, higher requirements are put forward on the quality of wireless communication received and out of band stealth of the radome. Frequency selective surface(FSS) technology is a commonly adopted technique. Based on this, a bandpass aperture center FSS structure working for X-band is designed in this paper. By comparing the original cross-gap FSS structure(Case1) with the deformed FSS structures(Case2 and Case3), it is found that the deformed FSS structure(Case3), which is obtained by zigzag operation of Case1, has better transmission performance stability in both planar and curved states. The resonance frequency of the Case3 structure is 10.56GHz, the-3dB bandwidth is 1.52GHz, and the relative bandwidth is 14.39%. When the incidence angle is up to 60° under the transverse electric(TE) and transverse magnetic(TM) polarized waves, the resonant frequency offset of the structure is less than 3.78%. Thus, this structure has better angular stability. When the FSS structure is conformal on a cylindrical surface with a central angle of π/2 and a radius of 95.54mm, the maximum resonant frequency offset is 4.5% under normal incidence for x-polarized and y-polarized electromagnetic waves. Thus, this structure also has better conformal stability. Moreover, the conformal stability of the FSS structure can be further improved when the thickness of the dielectric substrate is reduced to 0.25mm. Due to the low profile, good angular stability, and conformal stability, the FSS structure has a good prospect for application in wireless communication that requires conformality.更多还原