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Synthesis of direct coupled pentaband bandstop filters using frequency transformation

机译:使用频率变换的直接耦合Pentaband Bandstop滤波器的合成

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This paper demonstrate an approach to acquire coupling matrices for direct coupled Pentaband bandstop filter with asymmetric responses. There are different approaches to implement pentaband filters among which frequency transformation techniques is advantageous than other methods in terms of complexity to find the transfer functions. So it is applied here for finding the locations of poles and zeros of a direct coupled pentaband bandstop filter. By properly combining several single-band filtering functions, the pentaband filtering function are generated. For easy tuning, filter has been synthesized in cul-de-sac topology which eliminates the need for diagonal couplings. Finally 20-pole symmetric pentaband bandstop filters has been synthesized.
机译:本文展示了利用非对称响应获取用于直接耦合的Pentaband频率滤波器的耦合矩阵的方法。有不同的方法来实现Pentaband滤波器,其中频率变换技术与其他方法在复杂性方面是有利的,以找到传递函数。因此,在此应用用于找到直接耦合的Pentaband BandStop滤波器的极点和零的位置。通过正确组合多个单带滤波功能,生成了Pentaband过滤功能。为了易于调整,过滤器已经在CUL-DE-SAC拓扑中合成,无需对对角线耦合的需要。最后,已经合成了20极对称的PENTABAND BANDSTOP滤波器。

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