Extracted pole filters alternating transmission zeros (TZs) above and below the passband are intrinsically related to the use of nonresonant nodes (NRNs) of different nature (inductive and capacitive). This work demonstrates that it is possible to synthesize an extracted pole filter showing TZs on both sides of the passband but implementing all NRNs of the same reactive nature, overcoming the limitations imposed by some technologies. The proposed feature is achieved by special consideration of the input reflection phase of the generalized Chebyshev filter function, affecting input and output resonators and placing at most two zeros at the opposite band. A third-order all-capacitive prototype filter has been synthesized and fabricated to validate the proposed statement. The concept allows us to achieve all-capacitive or all-inductive filters.

中文翻译：

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在阻带和相同性质的非谐振节点中具有传输零点的提取极点滤波器的合成

提取极点滤波器在通带上方和下方交替传输零点 (TZ) 本质上与使用不同性质（电感性和电容性）的非谐振节点 (NRN) 相关。这项工作表明，可以合成一个提取极点滤波器，在通带两侧显示 TZ，但实现具有相同反应性质的所有 NRN，克服了某些技术强加的限制。所提出的特征是通过对广义切比雪夫滤波器函数的输入反射相位的特殊考虑来实现的，它影响输入和输出谐振器，并在相反的频带上最多放置两个零点。一个三阶全电容原型滤波器已被合成和制造，以验证所提出的声明。这个概念使我们能够实现全电容或全电感滤波器。