Extraction of Generalized Coupling Coefficients for Inline Extracted Pole Filters With Nonresonating Nodes
Extraction of Generalized Coupling Coefficients for Inline Extracted Pole Filters With Nonresonating Nodes
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DOI：
10.1109/tmtt.2011.2168967
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发表时间：
2011-10
影响因子：
4.3
通讯作者：
O. Glubokov;D. Budimir
中科院分区：
文献类型：
--
作者：
O. Glubokov;D. Budimir
本文介绍了提取的极点截面的谐振和非谐振节点之间的广义耦合系数的过程。提取允许直接从全波仿真的结果获得内联提取极点滤波器的关键设计参数。设计了一个具有λ/4波长谐振腔的三阶波导E面带通滤波器，验证了所提方案的可行性。具有广义切比雪夫响应的带通滤波器在9.45 GHz处具有300 MHz的带宽，并且由于在预测频率处布置了三个传输零点而显示出宽阻带。通过测量对所制作的滤波器的性能进行了评估，实验结果与仿真结果吻合得很好。
This paper presents the procedure for extracting the generalized coupling coefficients between resonating and nonresonating nodes of extracted pole sections. The extraction allows obtaining key design parameters for inline extracted pole filters directly from results of full-wave simulations. A third-order waveguide E-plane bandpass filters with λ/4-wavelength resonators is designed to prove feasibility of the proposed concept. The bandpass filter with a generalized Chebyshev response has 300-MHz bandwidth at 9.45 GHz and reveals wide stopband due to three transmission zeros arranged at predicted frequencies. Performance of the fabricated filter is evaluated through measurements, the experimental results obtained show very good agreement with simulations.