Title :
Improvements on the Search Modal Propagation Constants in Lossy Circular Waveguides
Author :
Rosa, Guilherme S. ; Bergmann, Jose R. ; Zang, Sandro R.
Author_Institution :
Center for Telecommun. Studies, Pontifical Catholic Univ. of Rio de Janeiro, Rio de Janeiro, Brazil
Abstract :
In this letter, we review the calculation of the propagation constants in a circular lossy waveguide. We highlighted some improvements in order to find the propagation constants of the guided modes. We present a new characteristic equation that simplifies the application of the winding number technique described in previous publications, and also we discussed some numerical criteria for the application of this technique.
Keywords :
circular waveguides; electromagnetic wave propagation; modal analysis; search problems; characteristic equation; guided modes; lossy circular waveguides; numerical criteria; search modal propagation constants; winding number technique; Convergence; Electromagnetic waveguides; Equations; Mathematical model; Poles and zeros; Propagation constant; Windings; Circular waveguide; electromagnetic propagation in absorbing media; propagation constant;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2316792
