| 基于齿状缺陷地的宽阻带交叉耦合SIW滤波器 |
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| 引用本文： | 佘金川,吴志强,王凯,陈耀忠,陈言,李正雄,张胜.基于齿状缺陷地的宽阻带交叉耦合SIW滤波器[J].压电与声光,2024,46(2):179-183. |
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| 作者姓名： | 佘金川 吴志强 王凯 陈耀忠 陈言 李正雄 张胜 |
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| 作者单位： | 北方信息控制研究院集团有限公司,江苏 南京 211153;中国矿业大学信息与控制工程学院,江苏 徐州 221116 |
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| 基金项目： | 中央高校基本科研业务费专项基金资助项目(2019GF12) |
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| 摘 要： | 提出了一种齿状缺陷地低通传输线结构,该低通传输线由多级齿状缺陷地构成,通过调节齿状缺陷地枝节长度,可以有效调节低通和阻带频率范围。利用该齿状缺陷地结构,级联交叉耦合扇形基片集成波导(SIW)滤波器,该文设计了一款高带外抑制的宽阻带滤波器,与传统SIW带通滤波器相比,其矩形系数K40 dB=2,阻带范围大于2倍的中心频率,具有较好的通带和阻带选择特性。测试结果表明,滤波器的中心频率为10.35 GHz,3 dB和40 dB带宽分别为507 MHz和1.05 GHz,插入损耗优于1.47 dB,与仿真结果基本一致。
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| 关 键 词： | 缺陷地结构 基片集成波导 交叉耦合 滤波器 宽阻带 |
| 收稿时间： | 2023/12/28 0:00:00 |
Wide Stopband Cross-Coupled SIW Filter Based on Tooth-Shaped Ground Defect |
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| SHE Jinchuan,WU Zhiqiang,WANG Kai,CHEN Yaozhong,CHEN Yan,LI Zhengxiong,ZHANG Sheng.Wide Stopband Cross-Coupled SIW Filter Based on Tooth-Shaped Ground Defect[J].Piezoelectrics & Acoustooptics,2024,46(2):179-183. |
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| Authors: | SHE Jinchuan WU Zhiqiang WANG Kai CHEN Yaozhong CHEN Yan LI Zhengxiong ZHANG Sheng |
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| Affiliation: | Northern Information Control Research Institute Group Co., Ltd, Nanjing 211153 ,China; School of Information and Control Engineering, China University of Mining and Technology,Xuzhou 221116 ,China |
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| Abstract: | A low-pass transmission line structure with multi-level,tooth-shaped defects is proposed. The low-pass frequency and attenuation-band range could be effectively adjusted by varying the length of the branch of atooth-shaped defect. A wide-stopband filter with high out-of-band suppression was designed by cascading cross-coupled fan-shaped SIW filters using this tooth-shaped defect ground structure. Compared to traditional SIW bandpass filters, the rectangular coefficient,K40 dB, had a value of two, and the stopband range was greater than twice the center frequency, demonstrating good passband and stopband selection characteristics. The test results showed that the filter''s center frequency was 10.35 GHz, with 3 dB and 40 dB bandwidths of 507 MHz and 1.05 GHz, respectively. The insertion loss was better than 1.47 dB, which was consistent with the simulation results. |
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