摘要
该文采用时域有限差分法(FDTD)设计了一种具有阶梯槽结构的人工表面等离激元(SSPPs)型带通微波滤波器。滤波器由4部分组成,其中第二部分(阶梯阻抗槽)是过渡部分,新颖的周期性排列的阶梯阻抗槽设计可增强微波波段亚波长的束缚效果,提高带通SSPPs滤波器的通带特性和抗电磁干扰能力。该文还利用FDTD法对微波频率范围内的SSPPs滤波器的透射和反射特性进行了研究。结果表明,通过调整阶梯阻抗槽结构的几何尺寸及传输线中耦合间隙参数,可以灵活地控制滤波器的带宽和抑制特性,滤波器具有很强的抗空间电磁干扰能力。
A spoof surface plasmon polaritions(SSPPs)microwave band pass filter with stepped slot structure is designed by using FDTD method.The filter is composed of four sections,in which the second section(i.e.the stepped impedance slot section)is the transition section.The novel periodically arranged stepped impedance slot design can enhance the confinement effect of microwave band sub-wavelength,improve the pass-band characteristics and the ability of resisting electromagnetic interference of the SSPPs band pass filter.The transmission and reflection properties of the SSPPs filter in the microwave frequency range are investigated by FDTD method.The results show that through adjusting the geometrical dimensions of the stepped impedance slot structure as well as the coupling gap parameters in the transmission line,the bandwidth and suppression characteristics of the filter can be flexibly controlled and the filter has strong resistance to the space electromagnetic interference.
作者
王远
熊厚博
王耿
胡明哲
WANG Yuan;XIONG Houbo;WANG Geng;HU Mingzhe(School of Electrical and Electronic Engineering,Hubei University of Technology,Wuhan 430068,China;School of Electronic Information and Engineering,Hubei University of Science and Technology,Xianning 437100,China;School of Electrical Engineering,Liupanshui Normal University,Liupanshui 553004,China)
出处
《压电与声光》
CAS
北大核心
2020年第1期8-11,共4页
Piezoelectrics & Acoustooptics
基金
国家自然科学基金资助项目(51567017,61461008)
