太原理工大学学报2013，Vol.44Issue(4)：510-513,4.
矩形隧道中电磁波传输损耗收敛阈值频率分析
Convergent Threshold Frequency of Electromagnetic Waves Propagation Loss in Rectangular Tunnels
摘要
Abstract
Most theoretical studies of electromagnetic (EM) wave propagation modes in a rectangular tunnel are focused on the fundamental modes or some partial modes.But these studies are lake of analysis of common properties of the change of enviroment.In this paper,we introduced a formula about the number of the excited modes in different size tunnels,in which the number of a modes is proportional to the square of the EM wave frequency and the area of tunnel cross section.Based on this point,it was concluded that the propagation loss of the dielectric waveguide is going to converge by increasing its frequency,and the convergency value depends on the size of tunnel.Forthermore,the simulation results of different size of tunnels indicate that the propagation loss is approaching to a convergency value when the number of modes is close to 200.The corresponding frequency at this number point is called the convergent threshold frequency.关键词
矩形隧道/波模理论/传播损耗/收敛阈值Key words
rectangular tunnels / wave modes / propagation loss /convergent threshold frequency分类
矿业与冶金引用本文复制引用
郑红党,王亚男..矩形隧道中电磁波传输损耗收敛阈值频率分析[J].太原理工大学学报,2013,44(4):510-513,4.基金项目
国家自然科学基金资助项目(51204177) （51204177）
中国矿业大学青年科研基金资助项目(OC080251) （OC080251）
