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首页> 外文期刊>Applied Computational Electromagnetics Society journal >High Selectivity Bandpass Filter Using Three Pairs of Coupled Lines Loaded with Shorted Stubs
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High Selectivity Bandpass Filter Using Three Pairs of Coupled Lines Loaded with Shorted Stubs

机译：使用短截线负载的三对耦合线的高选择性带通滤波器

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摘要

A high selectivity bandpass filter with multiple transmission poles (TPs) and transmission zeros (TZs) has been presented. By employing three pairs of parallel-coupled lines and two shorted stubs, sharp roll-off skirts and high stopband rejections can be achieved with five TPs and ten TZs. Theoretical analysis is explained and simulated results are illustrated on this high-performance filter. Finally, a bandpass filter example with center frequency of 2.15 GHz and 3-dB fractional bandwidth of 19% is designed, fabricated, and measured. It is shown that the measured transition band roll-off rates are better than 425 dB/GHz. Good agreement between the simulations and measurements validates the design method.
机译：提出了具有多个传输极点（TP）和传输零点（TZ）的高选择性带通滤波器。通过使用三对平行耦合的线和两个短截线，可以用五个TP和十个TZ实现陡峭的滚降裙边和高阻带抑制比。对该高性能滤波器进行了理论分析，并说明了仿真结果。最后，设计，制造和测量了中心频率为2.15 GHz，3-dB分数带宽为19％的带通滤波器示例。结果表明，测得的过渡带滚降率优于425 dB / GHz。仿真和测量之间的良好一致性验证了设计方法。

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