| 小型化SIR同轴腔体双通带滤波器研究 |
| |
| 引用本文： | 胡海平,李国辉,房卫东,程孝奇.小型化SIR同轴腔体双通带滤波器研究[J].电子元件与材料,2012(8):42-46. |
| |
| 作者姓名： | 胡海平 李国辉 房卫东 程孝奇 |
| |
| 作者单位： | 上海大学特种光纤与光接入网省部共建重点实验室;中国科学院上海微系统与信息技术研究所中国科学院无线传感网与通信重点实验室 |
| |
| 基金项目： | 国家科技重大专项资助项目(No.2011ZX03005-002);中科院仪器设备功能开发技术创新资助项目(No.YG2010060);上海市重点学科和科委重点实验室资助项目 |
| |
| 摘 要： | 基于频率变换技术的双通带滤波器综合理论,应用阶跃阻抗谐振器(SIR)的基本原理,在双通带滤波器设计中引入λg/4型SIR同轴腔体谐振单元,设计了一种交叉耦合型拓扑结构的小型化同轴腔体双通带滤波器,相比于实际长度λg/4的传统滤波器,尺寸压缩了约50%。仿真结果显示,两个通带内回波损耗均大于20 dB,插入损耗小于0.1 dB,通带之间的阻带衰减特性良好。该滤波器的两个传输零点提高了阻带抑制度,满足了通信系统对滤波器小型化、低插损、高选择性的要求,能够广泛应用于双频带通信系统。
|
| 关 键 词： | 小型化 双通带滤波器 阶跃阻抗谐振器 |
Miniaturized coaxial dual-passband filters using stepped impedance resonator |
| |
| HU Haiping,LI Guohui,FANG Weidong,CHENG Xiaoqi.Miniaturized coaxial dual-passband filters using stepped impedance resonator[J].Electronic Components & Materials,2012(8):42-46. |
| |
| Authors: | HU Haiping LI Guohui FANG Weidong CHENG Xiaoqi |
| |
| Affiliation: | 1(1.Key Laboratory of Specialty Fiber Optics and Optical Access Network,Shanghai University,Shanghai 200072,China;2.Key Laboratory of Wireless Sensor Network & Communication,Shanghai Institute of Micro-system and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China) |
| |
| Abstract: | Based on the synthesis theory of dual-passband filter(DPBF) with frequency transformation technique,? g/4 type SIR coaxial harmonic unit was introduced in the design of DPBF by using the basic principle of stepped impedance resonators,the miniaturized coaxial DPBF with cross-coupling topology structure was designed.As compared to the traditional filter with g/4,the dimension was reduced almost 50%.The simulation results show that both return losses of two pass-bands are higher than 20 dB,while insertion losses are lower than 0.1 dB with its good attenuation characteristic between two pass-bands.The DPBF can generate two transmission zeros to increase the stop-band suppression,which fully satisfies the requirements of miniaturization,low insertion loss,high selectivity in communication systems.It can be widely used in dual-frequency communication systems. |
| |
| Keywords: | miniaturization DPBF stepped impedance resonator |
| 本文献已被 CNKI 等数据库收录！ |
|
