Title :
A method of moments analysis and a finite-difference time-domain analysis of a probe-sleeve fed rectangular waveguide cavity
Author_Institution :
Dept. of Electr. & Comput. Eng., Alabama Univ., Huntsville, AL, USA
fDate :
3/1/1991 12:00:00 AM
Abstract :
A multifilament method of moments (MOM) analysis and a finite-difference time-domain (FE-TD) analysis are used to numerically calculate the input impedance of a probe-sleeve fed rectangular waveguide which has been short-circuited on one side. The input impedance of the system is determined by using the above methods for several probe-sleeve configurations, and reasonable agreement between the two methods for the cases studied is found. An MOM Green´s function formulation which is based on scattering superposition and which allows the input impedance of a probe-sleeve feed to be calculated when the waveguide is terminated in a given load is derived. The MOM results and FD-TD numerical results are compared for this loaded waveguide input impedance case, and reasonable agreement between the methods is found. A comparison of theory and experiment is given for when the waveguide is terminated in a ground plane aperture
Keywords :
difference equations; electric impedance; probes; rectangular waveguides; time-domain analysis; waveguide theory; Green´s function formulation; finite-difference time-domain analysis; input impedance; loaded waveguide; moments method analysis; multifilament method of moments; probe-sleeve fed; rectangular waveguide cavity; scattering superposition; Feeds; Finite difference methods; Green´s function methods; Impedance; Loaded waveguides; Message-oriented middleware; Moment methods; Rectangular waveguides; Scattering; Time domain analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
