ZHENG Songyu,TANG Tao,WANG Jiawei,et al.Design of S-band Bandpass Cavity Filter[J].Journal of Chengdu University of Information Technology,2025,40(05):577-581.[doi:10.16836/j.cnki.jcuit.2025.05.001]
一种S波段带通腔体滤波器的设计
- Title:
- Design of S-band Bandpass Cavity Filter
- 文章编号:
- 2096-1618(2025)05-0577-05
- Keywords:
- cavity filter; S-band; bandpass filter; capacitive loading
- 分类号:
- TN713
- 文献标志码:
- A
- 摘要:
- 根据切比雪夫滤波器理论,设计一款作用于S波段的带通腔体滤波器。该滤波器通过采用电容加载耦合的方式,在一定程度实现了滤波器的小型化。最终设计出的11阶带通腔体滤波器尺寸为61.5 mm×16 mm×6 mm,通带中心频率为3.7 GHz,带内插损≤3.5 dB,通带内电压驻波比≤1.4,所需要的带外抑制>70 dBc。经过调试和测试,按照仿真模型加工的滤波器样品的实测结果与仿真结果相符合,达到预期设计目标并满足所提出的指标需求。
- Abstract:
- The S-band bandpass filter is designed,which is based on the Chebyshev filter theory.Capacitance-loaded coupling is used to reduce the size of the filter to a certain extent.The final design of the11-order bandpass cavity filter is61.5 mm×16 mm×6 mm,the center frequency of the passband is 3.7 GHz,the interpolation loss of the band is less than 3.5 dB,the voltage standing wave ratio of the passband is less than 1.4,and the required out-of-band rejection is >70 dBc.The measured results obtained by debugging and testing the filter samples processed according to the simulation model are in good agreement with the simulation results,which achieve the expected design objectives and meet the requirements of the proposedindicators.
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备注/Memo
收稿日期:2024-02-28
基金项目:国家自然科学基金资助项目(62001402)