Calculation and polynomial synthesis of the normalized response of a pseudo-elliptic lossy filter
Article No.: 18, Pages 1 - 3
Abstract
In this work a set of techniques and design method based on normalized low pass prototype, lossy rational polynomial functions of the transmission coefficient S21 and reflection coefficient S11, recursive technique of Cameron, and alternating poles method are applied to calculate the zeros and poles that characterize the normalized pseudo-elliptic lossy filter response. A Matlab program was developed to simplify the computation process, display the transmission and reflection zeros and poles in the complex plane, and plot the amplitudes in dB of S21 and S11 in the normalized frequency plane of a given filter.
References
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D. L. Hine Tong, 1989. Méthodes d'Analyse des Structures Multicouches-Multiconducteurs. Applications au Filtrage Microonde en Microruban Suspendu. Thèse de Doctorat, Université de Brest.
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R. J. Cameron, April 1999. General Coupling Matrix Synthesis Methods for Chebyshev Filtering Functions. In IEEE Transactions on Microwave Theory and Techniques, vol. 47, n°14, pp. 433--442.
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T. F. Skaik, 2011. Synthesis of coupled resonator circuits with multiple outputs using coupling matrix optimization. Doctoral Thesis, University of Birmingham.
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Yuting Zhao, Gang Wang, 2013. Multiobjective optimisation technique for coupling matrix synthesis of lossy filters. In IET Microw. Antennas Propag., vol. 7, Iss. 11, pp. 926--933.
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Published In
March 2019
512 pages
ISBN:9781450366458
DOI:10.1145/3320326
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Published: 27 March 2019
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