| 基于SIR的同轴腔体带通滤波器设计 |
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| 引用本文： | 冯东旭,夏哲雷,凌访华.基于SIR的同轴腔体带通滤波器设计[J].中国计量学院学报,2011,22(2):149-153. |
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| 作者姓名： | 冯东旭 夏哲雷 凌访华 |
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| 作者单位： | 中国计量学院信息工程学院,浙江杭州,310018 |
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| 基金项目： | 浙江省科技厅重大科技(优先主题)专项 |
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| 摘 要： | 基于阶跃阻抗谐振器SIR(stepped impedance resonators)的基本原理,采用λg/4型SIR作为基本谐振单元,设计了一款小型化同轴腔体带通滤波器.仿真结果显示,相比实际长度λg/4该滤波器尺寸压缩了56.7%,通带内回波损耗小于-17.5 dB,插入损耗小于0.1 dB,带外抑制度达到了-38.8 dB,满足了现代通信系统对滤波器小型化、低插入损耗、高选择性的要求,能够广泛应用于现代移动通信系统.
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| 关 键 词： | 同轴腔体滤波器 阶跃阻抗谐振器 仿真优化 |
Coaxial cavity bandpass filter design based on SIR |
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| FENG Dong-xu,XIA Zhe-lei,LING Fang-hua.Coaxial cavity bandpass filter design based on SIR[J].Journal of China Jiliang University,2011,22(2):149-153. |
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| Authors: | FENG Dong-xu XIA Zhe-lei LING Fang-hua |
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| Affiliation: | FENG Dong-xu,XIA Zhe-lei,LING Fang-hua(College of Information Engineering,China Jiliang University,Hangzhou 310018,China) |
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| Abstract: | According to the basic principle of stepped impedance resonators SIR,a miniaturization coaxial cavity bandpass filter was designed by using λg/4 type SIR as the basic harmonic unit.Simulation results show that the length was compressed 56.7% compared to the actual size λg/4,the passband return loss was less than 17.5 dB,insertion loss was less than 0.1 dB,band rejection reaches-38.8 dB.This filter fully meets the modern mobile communication systems requirements of miniaturization,low insertion loss,high selectivity,so it can be widely used in modern mobile communication systems. |
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| Keywords: | coaxial cavity filter SIR simulation optimization miniaturization |
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