<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Savaidis, S.P.</style></author><author><style face="normal" font="default" size="100%">Ioannidis, Z. C.</style></author><author><style face="normal" font="default" size="100%">Stathopoulos, N.A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Hybrid Field/Transmission-Line Model for the Study of Coaxial Corrugated Waveguides</style></title><secondary-title><style face="normal" font="default" size="100%">Microwave Theory and Techniques, IEEE Transactions on</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Bessel functions</style></keyword><keyword><style  face="normal" font="default" size="100%">coaxial corrugated waveguides</style></keyword><keyword><style  face="normal" font="default" size="100%">coaxial waveguides</style></keyword><keyword><style  face="normal" font="default" size="100%">Conductors</style></keyword><keyword><style  face="normal" font="default" size="100%">Corrugated waveguides</style></keyword><keyword><style  face="normal" font="default" size="100%">Eigenvalues and eigenfunctions</style></keyword><keyword><style  face="normal" font="default" size="100%">Equations</style></keyword><keyword><style  face="normal" font="default" size="100%">equivalent circuits</style></keyword><keyword><style  face="normal" font="default" size="100%">equivalent-circuit approach</style></keyword><keyword><style  face="normal" font="default" size="100%">field theory</style></keyword><keyword><style  face="normal" font="default" size="100%">full-wave methods</style></keyword><keyword><style  face="normal" font="default" size="100%">gyro traveling-wave tube (gyro-TWT)</style></keyword><keyword><style  face="normal" font="default" size="100%">higher order Bessel functions</style></keyword><keyword><style  face="normal" font="default" size="100%">hybrid field/transmission-line model</style></keyword><keyword><style  face="normal" font="default" size="100%">Impedance</style></keyword><keyword><style  face="normal" font="default" size="100%">Magnetic resonance</style></keyword><keyword><style  face="normal" font="default" size="100%">magnetron</style></keyword><keyword><style  face="normal" font="default" size="100%">numerical issues</style></keyword><keyword><style  face="normal" font="default" size="100%">Power transmission lines</style></keyword><keyword><style  face="normal" font="default" size="100%">propagation characteristics</style></keyword><keyword><style  face="normal" font="default" size="100%">transmission lines</style></keyword><keyword><style  face="normal" font="default" size="100%">wedge-shaped corrugations</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2012</style></year></dates><number><style face="normal" font="default" size="100%">10</style></number><volume><style face="normal" font="default" size="100%">60</style></volume><pages><style face="normal" font="default" size="100%">2972-2978</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">A transmission-line model is reformulated and combined with field theory to study the propagation characteristics in coaxial waveguides with wedge-shaped corrugations, either on the outer wall or the inner conductor. Numerical results show that this equivalent-circuit approach is in agreement with conventional full-wave methods presented in the literature. Additionally, this formulation overcomes numerical issues in the calculation of higher order Bessel functions, which usually conscript sophisticated expansion techniques.</style></abstract></record></records></xml>