Title :
Hybrid Field/Transmission-Line Model for the Study of Coaxial Corrugated Waveguides
Author :
Savaidis, Stylianos P. ; Ioannidis, Zisis C. ; Stathopoulos, Nikolaos A.
Author_Institution :
Dept. of Electron., Technol. Educ. Instn. of Piraeus, Athens, Greece
Abstract :
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.
Keywords :
Bessel functions; coaxial waveguides; equivalent circuits; transmission lines; coaxial corrugated waveguides; coaxial waveguides; equivalent-circuit approach; field theory; full-wave methods; higher order Bessel functions; hybrid field/transmission-line model; numerical issues; propagation characteristics; wedge-shaped corrugations; Conductors; Eigenvalues and eigenfunctions; Equations; Impedance; Magnetic resonance; Power transmission lines; Corrugated waveguides; gyro traveling-wave tube (gyro-TWT); magnetron; transmission lines;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2012.2209440
