宽阻带高温超导带通滤波器的设计  

Design of wide stopband HTS bandpass filter

作　　者：杨虹[1] 周艳[1] 向高林[1] 

机构地区：[1]重庆邮电大学光电工程学院,重庆400065

出　　处：《电子元件与材料》2014年第1期28-31,共4页Electronic Components And Materials

基　　金：重庆市教委科学技术研究基金资助项目(No.KJ100512);重庆市自然科学基金资助项目(No.CSTC 2010BB2412);重庆市大学生创新创业训练计划资助项目(No.201210617010);重庆邮电大学大学生科研训练计划资助项目

摘　　要：对宽阻带高温超导滤波器进行了研究,借助IE3D软件设计出了一款中心频率位于S波段,带宽为100MHz的九级宽阻带带通滤波器。此滤波器采用阶梯阻抗梳状线谐振器,将滤波器的谐波频率提高到基波频率的3倍以上,实现了宽阻带的要求。优化仿真后的结果是:带内插损小于0.3 dB,带外抑制:在0~BW内大于70 dB,在BW^3f0内大于60 dB;通带内S11<–20 dB。该设计很好地实现了宽阻带,解决了干扰问题,并且设计结构简单,易于实现。The wide stopband HTS（high temperature superconductor） filter whose center frequency located in S-band, bandwidth of 100 MHz was studied by using IE3D software. This filter used the step impedance combline resonator to increase the filter harmonic frequency to more than 3 times of fundamental frequency, and realized the wide stopband. Optimization simulation results show that, insertion loss is less than 0.3 dB in the passband, band outside suppression： greater than 70 dB within 0-BW, greater than 60 dB within the BW-3f0; SH〈-20 dB within the passband. This design achieves a good wide stopband, solves the interference problem, and has simple structure and easy to implement.

关 键 词：带通滤波器 宽阻带 高温超导 IE3D S波段 阶梯阻抗梳状线 

分 类 号：TN713[电子电信—电路与系统]