| 基于缺陷地结构的小型化双频带带通滤波器 |
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| 引用本文： | 张洪欣,张旭东,贺鹏飞.基于缺陷地结构的小型化双频带带通滤波器[J].电波科学学报,2016,31(2):363-367. |
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| 作者姓名： | 张洪欣 张旭东 贺鹏飞 |
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| 作者单位： | 1.北京邮电大学电子工程学院, 北京 100876 |
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| 基金项目： | 国家自然科学基金(61571063 |
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| 摘 要： | 提出了一种新型的基于缺陷地结构的双频带带通微带滤波器.缺陷地结构采用双模开口谐振环形式, 并使用不同组合方式的双模开口谐振环产生两个通带.滤波器的两个工作中心频率分别为3.5 GHz和5.8 GHz, 其中第一个频带涵盖了所有全球微波互联接入的应用频段, 第二个频带可以应用于雷达设备.为了进一步证实这款滤波器的性能, 基于Roggers RT5880板材制作了滤波器实物, 整体滤波器的大小仅为20 mm×20 mm, 测量数据和仿真结果吻合较好, 并且有两个传输零点, 可以满足工程上的需要.
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| 关 键 词： | 缺陷地结构 小型化 双模开口谐振环 微带带通滤波器 |
| 收稿时间： | 2015-06-11 |
Miniaturized dual-band bandpass filter using defected ground structure |
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| Institution: | 1.School of Electronic Engineering, Beijing University of Post and Telecommunication, Beijng 100876, China2.Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing University of Posts and Telecommunications, Beijing 100876, China3.School of Opto-electronic Information Science and Technology, Yantai University, Yantai 264005, China |
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| Abstract: | A novel band-pass microstrip filter using defected ground structure (DGS) is proposed. Dual-mode split-ring resonator (SRR) is utilized to form the DGS structure so that different passband can be obtained by different types of dual-mode SRRs, and the center frequencies of the filter is 3.5 GHz and 5.8 GHz, respectively. The first passband contains the whole application frequencies of worldwide interoperability for microwave access and the second passband can be used for radar system. For validating the filter further, a filter based on Roggers RT5880 is fabricated. The measured results agree well with the simulated results. The insertion loss within each passband is less than 2 dB and two transmission zeros are obtained, which meets the engineering requirements, and the overall size of the filter is 20mm×20mm. |
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| Keywords: | defected ground structure miniaturization dual-mode split-ring resonator microstrip bandpass filter |
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