Title :
Accurate Computation of Poles of a Lossless Multiport Network via Cepstrum Analysis
Author :
Oldoni, Matteo ; Macchiarella, Giuseppe ; Bellini, Sandro
Author_Institution :
Dept. of Electron. & Inf., Politec. di Milano, Milano, Italy
Abstract :
In this letter, we present a method to compute accurately the poles of a lossless N -port device for which the reflection and transmission(s) zeros are known. It does not require any particular symmetry of these roots and only assumes the poles are with a negative real part in the complex frequency domain. The basic concept is based on the cepstrum and allows to act on high-degree polynomials, thus being a viable option especially for the design of multiplexers.
Keywords :
cepstral analysis; microwave filters; multiplexing equipment; polynomials; cepstrum analysis; high-degree polynomials; lossless N -port device; lossless multiport network; multiplexers; poles; transmission zeros; Accuracy; Cepstrum; Discrete Fourier transforms; Filtering theory; Multiplexing; Polynomials; Standards; Feldtkeller equation; lossless transfer function; multiplexers; polynomial fitting;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2239970
