CHEN Xinlong,SHI Jiucheng,LI Yuhuan,et al.A Dual-mode Filter with Multi-slot Line Perturbation[J].Journal of Chengdu University of Information Technology,2020,35(03):279-282.[doi:10.16836/j.cnki.jcuit.2020.03.006]
一种多槽线扰动的双模滤波器
- Title:
- A Dual-mode Filter with Multi-slot Line Perturbation
- 文章编号:
- 2096-1618(2020)03-0279-04
- Keywords:
- dual mode filter; microstrip filter; bandpass filter; transmission zeros; out-of-band supression
- 分类号:
- TN713
- 文献标志码:
- A
- 摘要:
- 提出一种新型的双模微带滤波器。通过利用一对交叉槽线、一个方形槽和一个方形切角来实现模式分离,并结合正交馈电方式,实现良好的双模滤波器特性。仿真的滤波器中心频率为1.63 GHz,1 dB带宽为180 MHz(1.54～1.72 GHz),并能在带外产生两个传输零点。对滤波器进行了加工测试,测试结果与仿真结果基本一致。该滤波器具有结构紧凑,插入损耗小,带外抑制性好等特点。
- Abstract:
- A novel dual-mode microstrip filter is proposed in this paper. By using a pair of unequal crossed slots, a square slot and a square cut, the mode separation is achieved. When combined with orthogonal feed mode, good dual-mode filter characteristics can be achieved.The simulated central frequency of the filter is 1.63 GHz, the bandwidth of 1 dB is 180 MHz(1.54-1.72 GHz), and two transmission zeros(TZ)can be generated out of passband. The filter is fabricated and measured, and the measured results are basically consistent with the simulation results. The filter has the advantages of compact structure, low insertion loss and good out-of-band suppression.
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备注/Memo
收稿日期:2019-07-22 基金项目:四川省科技厅重点研发资助项目(2019YFG0087)