Title :
Galerkin solution for the thin circular iris in a TE11-mode circular waveguide
Author :
Scharstein, Robert W. ; Adams, Arlon T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Clemson Univ., SC, USA
fDate :
1/1/1988 12:00:00 AM
Abstract :
An integral equation for the transverse electric (TE) field in the aperture of a concentric circular iris in a transverse plane of a circular waveguide is approximately solved using Galerkin´s method. The aperture field is represented by a finite sum of normal TE and TM (transverse magnetic) circular waveguide modes that fit the circular aperture. The numerical convergence of the Galerkin solution is demonstrated using the resultant aperture field distributions and equivalent shunt susceptance for the case of dominant TE11-mode excitation. The resultant aperture electric field distribution closely resembles that of the TE11 aperture mode alone, except for edge contribution behavior at the edge of the iris. A resonant or capacitive iris is possible over a restricted range of frequencies
Keywords :
circular waveguides; electric fields; integral equations; waveguide theory; Galerkin solution; TE11-mode; aperture electric field distribution; capacitive iris; circular waveguide; dominant TE11-mode excitation; equivalent shunt susceptance; integral equation; numerical convergence; resonant iris; thin circular iris; transverse electric field; Apertures; Convergence of numerical methods; Frequency; Integral equations; Iris; Moment methods; Planar waveguides; Resonance; Shunt (electrical); Tellurium;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
