Synthesis of wide-band bandpass filters with quarter-wavelength resonators
Synthesis of wide-band bandpass filters with quarter-wavelength resonators
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DOI：
10.1109/apmc.2009.5385275
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发表时间：
2009-12
期刊：
影响因子：
--
通讯作者：
Qingfeng Zhang;Yilong Lu
中科院分区：
文献类型：
--
作者：
Qingfeng Zhang;Yilong Lu
本文提出了一种无需全局优化的宽带四分之一波长谐振器带通滤波器设计的综合方法。在该方法中，提出了具有指数加权匝数比和额外传输线的改进的K-逆变器和J-逆变器模型，以考虑逆变器的频率依赖性。所提出的综合方法应用于矩形同轴宽带带通滤波器的设计。作为设计示例，四极矩形同轴带通滤波器设计用于 63% 的分数带宽。测量结果与仿真结果吻合良好，表现出良好的等纹波性能。所提出的方法有望在宽带带通滤波器的设计中得到更多应用。
This paper presents a synthesis method for the design of wide-band quarter-wavelength-resonator bandpass filters without global optimization. In this method, the improved K-inverter and J-inverter models with the exponent-weighted turns ratio and extra transmission lines are proposed in order to incorporate the frequency dependence of inverters. The proposed synthesis method is applied to the design of a rectangular coaxial wide-band bandpass filters. As a design example, a four-pole rectangular coaxial bandpass filter is designed for 63% fractional bandwidth. The measurement results agree well with the simulation results and show good equal ripple performance. The proposed method is expected to find more applications in the design wide-band bandpass filters.