一种Ku波段/毫米波波段独立双通带微型化频率选择表面

为了满足现代通信设备多频带及集成化要求，基于三屏耦合机制和双屏谐振机制，设计了一种在Ku波段和毫米波波段具有独立双通带、微型化和“矩形化”滤波特性的频率选择表面(FSS).根据物理结构分析了其作用机理，并采用矢量模式匹配法计算了其传输特性.结果表明：该结构单元尺寸仅为第一通带谐振波长的0.104倍，具有微型化特征；第二通带在42.6 GHz和49.6 GHz时出现双峰，在47.4 GHz时出现-0.828 dB的“浅谷”，具有“矩形化”传输特性；两个通带间隔约30 GHz且相互独立，在0°~60°扫描范围内均具有良好的角度稳定性.这种多功能的FSS可以满足工程应用要求.

Abstract

To meet the multi-band and integration requirements of the communication apparatus, the coupling and resonance mechanism can be exploited to design a miniaturized-element frequency selective surface (FSS) with two independent pass-bands at Ku-band and millimeter wave (MMW) frequency. The interaction of the layers was analyzed based on the structure, and the precise transmissions for different parameters were obtained using the vector modal matching method. The results show that the structure has two independent and largely separated pass-bands: the first one has miniaturization characteristic with a unit cell size of about λ1/10, where λ1 is the wavelength at the center frequency of the first pass-band; the second one is a rectangular pass-band with a “shallow vale” of -0.828 dB at 47.4 GHz between two peaks at 42.6 GHz and 49.6 GHz, respectively. The transmission and resonant frequency are stable as the incident angle was varied from normal to 60°. The multifunctional FSS can satisfy the engineering requirements via parameters optimization.

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王秀芝, 高劲松, 徐念喜. 一种Ku波段/毫米波波段独立双通带微型化频率选择表面[J]. 红外与毫米波学报, 2014, 33(3): 241. WANG Xiu-Zhi, GAO Jin-Song, XU Nian-Xi. A novel miniaturized-element frequency selective surface with two independent pass-bands at Ku-band and millimeter-wave frequency[J]. Journal of Infrared and Millimeter Waves, 2014, 33(3): 241.

一种Ku波段/毫米波波段独立双通带微型化频率选择表面

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