| 一种新颖的微带线低通滤波器 |
| |
| 引用本文： | 杨永侠,陈蕾. 一种新颖的微带线低通滤波器[J]. 西安工业大学学报, 2010, 30(5): 474-477 |
| |
| 作者姓名： | 杨永侠 陈蕾 |
| |
| 作者单位： | 西安工业大学,电子信息工程学院,西安,710032 |
| |
| 基金项目： | 陕西省重大科技创新专项资金资助项目(2007ZKC |
| |
| 摘 要： | 针对传统微带线低通滤波器尺寸偏大、阻带较窄的问题,本文提出了一种新型结构滤波器.该滤波器由半圆型缺陷地结构(Semicircle Defected Ground Structure,S-DGS)单元和圆型阶梯阻抗并联枝节(Circle stepped-impedance shunt stubs,C-SISS)组成.文中首先分析了S-DGS和C-SISS结构对微带线低通滤波器带阻特性的影响,接着给出了微带线滤波器的等效电路模型.该滤波器3 dB截止频率为2.7 GHz,阻带为4～15.0 GHz,比传统DGS滤波器阻带拓宽了20%.测试结果与仿真结果吻合较好,验证了所设计滤波器的可靠性.
|
| 关 键 词： | 缺陷地结构 阶梯阻抗并联枝节 微带线 低通滤波器 |
A Novel Microstrip Low-pass Filter |
| |
| YANG Yong-xia,CHEN Lei. A Novel Microstrip Low-pass Filter[J]. Journal of Xi'an Institute of Technology, 2010, 30(5): 474-477 |
| |
| Authors: | YANG Yong-xia CHEN Lei |
| |
| Affiliation: | (School of Electronic Information Engineering,Xi＇an Technological University,Xi＇an 710032,China) |
| |
| Abstract: | To solve the problem that conventional microstrip low-pass filters are of large size and narrow stop-band,this paper presents a new microstrip low-pass filter,which is composed of semicircle defected ground structures and circle stepped-impedance shunt stubs.The effect of parameter variation of S-DGS and C-SISS on the band-stop characteristic is studied.Then an equivalent circuit model of the proposed LPF is described.The proposed filter is compact and 3-dB cutoff frequency is 2.7 GHz.The stop-band is up to 15.0 GHz,which is 20% wider than that of the conventional DGS filters.The simulated results are in good agreement with the measured results,verifing the reliability of the designed filter. |
| |
| Keywords: | defected ground structure（DGS） stepped-impedance shunt stubs（SISS） microstrip lines low pass filters |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
