| 曹海林,管伟,何思佳,杨力生.G形DMS结构高选择性低通滤波器的分析与设计[J].高技术通讯(中文),2013,23(3):313~317 |
| G形DMS结构高选择性低通滤波器的分析与设计 |
| Design and analysis of a G shaped DMS lowpass filter with high selectivity |
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| DOI： |
| 中文关键词: 缺陷微带结构（DMS）， G形， 微带低通滤波器， 选择性， 宽阻带 |
| 英文关键词: defected microstrip structure (DMS), G shaped structure, microstrip lowpass filter, selectivity, wide stopband |
| 基金项目:国家自然科学基金(61001089)和重庆市科委自然科学基金（2010BB2243）资助项目 |
| 作者 | 单位 | | 曹海林 | 重庆大学飞行器测控与通信教育部重点实验室
重庆大学 通信与测控中心 | | 管伟 | 重庆大学飞行器测控与通信教育部重点实验室 | | 何思佳 | 重庆大学飞行器测控与通信教育部重点实验室 | | 杨力生 | 重庆大学飞行器测控与通信教育部重点实验室
重庆大学 通信与测控中心 |
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| 中文摘要: |
| 提出一种新颖的G形缺陷微带结构（DMS）微带线，以G形DMS为结构单元，设计并实现了一种具有高选择性和宽阻带特性的微带低通滤波器。与传统的DMS结构相比，G形DMS具有更低的谐振频率和更宽的阻带抑制。对设计的滤波器进行了测试，实测结果表明：该滤波器3dB截止频率为3.17GHz，频率选择性达189dB/GHz，同时在3.4GHz~10GHz阻带内抑制度大于25dB,有效地抑制了二次和三次谐波。该滤波器占用大小仅为26mm×15mm，实测结果与仿真良好吻合, 表明了该DMS的有效性及实用性。 |
| 英文摘要: |
| A novel G shaped defected microstrip structure (DMS) was proposed, and a microstrip lowpass filter with the superior selectivity and wide stopband was designed and fabricated using the proposed DMS as its structrual units. Compared with the conventional DMS, the proposed G shaped DMS exhibits a lower resonant frequency and a wider stopband. The lowpass filter was tested and measured, and the results showed that its 3dB cutoff frequency was 3.17GHz, the frequency selectivity was 189dB/GHz, and the harmonic suppression was over 25dB in the stopband of 3.4GHz~10GHz, so the second and third harmonics can be effectively suppressed. The dimension of this filter is as small as 26mm×15mm. The measured and simulated results are in good agreement, validating the effectiveness and practicality of the DMS. |
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