Analysis of Leaky Modes on Circular Dielectric Rods using Davidenkos Method

  • Kim, Ki-Young (School of Electronic and electrical Engineering, Kyungpook National University) ;
  • Tae, Heung-Sik (School of Electronic and electrical Engineering, Kyungpook National University) ;
  • Lee, Jeong-Hae (Radio Science and Communication Engineering, Hongik University)
  • Published : 2002.11.01

Abstract

Leaky modes on a circular dielectric rod are investigated from the precisely determined normalized complex propagation constants using Davidenko's complex root finding technique. Below the cutoff frequency of the guided mode, distinct frequency regions that have unique properties are observed, such as nonphysical region, antenna mode region, reactive mode region, and spectral gap region. The effects of tro design parameters, dielectric constants and the radius of the rod, to the leaky mode characteristics are also considered.