Analytic sensitivity calculations of poles and zeros of general Chebyshev filtering functions for microwave coupled resonators

Analytic sensitivity calculations of poles and zeros of general Chebyshev filtering functions for microwave coupled resonators
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微波耦合谐振器通用切比雪夫滤波函数极点和零点的解析灵敏度计算

DOI:
10.1049/iet-map.2009.0079
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发表时间:
2010
期刊:
IET Microwaves, Antennas & Propagation
影响因子:
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通讯作者:
Jayyousi A
Jayyousi A
中科院分区:
--
文献类型:
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作者:
Jayyousi A

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提出了一种计算耦合谐振器结构中滤波极点和反射零点灵敏度的方法。所提出的方法不是在给定的频谱上寻找s -参数的灵敏度,而是允许计算每个极点和零点相对于耦合系数变化的灵敏度。这可以更好地了解制造公差对滤波响应的影响,并可以使其更系统地进行调谐。给出了非对称四阶切比雪夫滤波器的详细数值算例。
A methodology for calculating the sensitivity of filtering poles and reflection zeros in coupled resonator structures is presented. Rather than finding the sensitivity of theS-parameters across a given frequency spectrum, the proposed method allows for calculating the sensitivity of each pole and zero with respect to coupling coefficient variations. This provides a better insight into the effects of fabrication tolerance on the filtering response and could lend itself to a more systematic approach to tuning. A detailed numeric example is provided for an asymmetric fourth-order Chebyshev filter.
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