Title :
A Fractional Derivative Operator for Surface Impedance TLM Modeling
Author :
Lanoë, Jérémy ; Le Maguer, S. ; Ney, M.M.
Author_Institution :
Univ. of Western Brittany, Brest
Abstract :
A new and straightforward implementation of metallic losses in a time-domain field computation namely, the transmission line matrix (TLM) is presented. The approach is based on the description of the skin surface impedance concept directly in time-domain by means of a digital filter representing a fractional derivative operator. Numerical implementation based on recent advances in signal processing is shown. Finally, the new approach is tested and compared to usual TLM implementation showing the stability and accuracy of the scheme.
Keywords :
digital filters; filtering theory; surface impedance; time-domain analysis; transmission line matrix methods; digital filter; fractional derivative operator; metallic loss; signal processing; skin surface impedance concept; surface impedance TLM modeling; time-domain field computation; transmission line matrix; Conductors; Filters; Fourier transforms; Millimeter wave communication; Millimeter wave technology; Propagation losses; Radio frequency; Surface impedance; Time domain analysis; Transmission line matrix methods; Fractional derivative; metallic losses; surface impedance; time-domain; transmission line matrix (TLM) method;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2007.903428
