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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Reduced-size wideband bandstop filter using two open-circuited shunt stubs spaced by a double-length transmission-line element
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Reduced-size wideband bandstop filter using two open-circuited shunt stubs spaced by a double-length transmission-line element

机译：使用两个以双倍长度的传输线元件隔开的开路并联支路的减小尺寸的宽带带阻滤波器

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摘要

A reduced-size bandstop filter is proposed using two meandered or bended lambda(g)/4 open-circuited shunt stubs. A double-length transmission-line element (TLE) is used as a connecting line between these stubs in order to obtain a wider stopband than that of the conventional filter with a single-length TLE. The meandered or bended double-length connecting line has a length of lambda(g)/2 and the same characteristic impedance as the open-circuited shunt stubs. A simple transmission-line model is used to calculate the frequencies of the attenuation poles and zeros. Finally, three wideband microstrip bandstop filters are designed and realized with the same stopband characteristics. It is shown that the smallest of the proposed filters occupies a smaller surface area than (lambda(g)/5)(2). The wideband bandstop, filters are also evaluated via experiment and simulation with very good agreement. (C) 2004 Wiley Periodicals, Inc.
机译：提出了使用两个曲折或弯曲的λ（g）/ 4开路并联支路来减小尺寸的带阻滤波器。为了获得比具有单长度TLE的常规滤波器更宽的阻带，将一根双长度的传输线元素（TLE）用作这些根之间的连接线。弯曲或弯曲的双长度连接线的长度为λ（g）/ 2，并且其特性阻抗与开路的分流支路相同。一个简单的传输线模型用于计算衰减极点和零点的频率。最后，设计并实现了三个具有相同阻带特性的宽带微带带阻滤波器。结果表明，所提出的最小的过滤器比（λ（g）/ 5）（2）具有更小的表面积。宽带带阻滤波器也通过实验和仿真进行了很好的一致性评估。 （C）2004年Wiley Periodicals，Inc.

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