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A methodology for calculating the sensitivity of filtering poles and reflection zeros in coupled resonator structures is presented. Rather than finding the sensitivity of the S-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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- 2 Finished
Lancaster, M., Jiang, K., Gardner, P., Hall, P., Huang, F. & Prewett, P.
1/12/06 → 31/05/10
Project: Research Councils