DETERMINATION OF SEM POLES FROM FREQUENCY RESPONSES
- 1 January 1982
- journal article
- research article
- Published by Taylor & Francis in Electromagnetics
- Vol. 2 (1) , 55-67
- https://doi.org/10.1080/02726348208915157
Abstract
A curve fitting and pole extraction algorithm has been developed and applied to exact frequency domain data for the surface fields on a perfectly conducting sphere. The data are fitted extremely closely, and for at least a handful of the lowest order SEM poles, the extracted poles and their residues are in good agreement with their known exact values. Unfortunately, this is not true if the frequency response is degraded in accuracy. In particular, noise effects are explored, and it is found that for noise levels typical of the best frequency domain experimental data it is no longer possible to locate more than (at most) the dominant SEM pole to a reasonable degree of accuracy.Keywords
This publication has 3 references indexed in Scilit:
- Calculation of the SEM parameters from the transient response of a thin wireIEEE Transactions on Antennas and Propagation, 1980
- Pole extraction from real-frequency informationProceedings of the IEEE, 1980
- The singularity expansion methodPublished by Springer Nature ,1976