Title :
Moment-method analysis of arbitrary 3-D metallic N-port waveguide structures
Author :
Bunger, Rainer ; Arndt, Fritz
Author_Institution :
Microwave Dept., Bremen Univ., Germany
fDate :
4/1/2000 12:00:00 AM
Abstract :
Moment-method analysis of arbitrarily shaped perfectly conducting (“metallic”) waveguide structures with N waveguide ports is presented that is based on the free-space Green´s function. Utilizing the Kirchhoff-Huygens principle, the problem is formulated in terms of the electric-field integral equation. The eigenvectors of the waveguide port sections and the Rao-Wilton-Glisson functions for triangular patches are used as basis functions for the magnetic and electric surface current densities, respectively. The accuracy of the method is verified by measurements or reference values. Its versatility is demonstrated at several design examples of practical interest, such as a lateral coax-fed waveguide, a twisted waveguide, and a waffle-iron filter with round teeth
Keywords :
Green´s function methods; current density; eigenvalues and eigenfunctions; electric field integral equations; method of moments; waveguide components; waveguide discontinuities; waveguide filters; waveguide junctions; waveguide theory; 3D metallic N-port waveguide structures; EFIE; Kirchhoff-Huygens principle; Rao-Wilton-Glisson functions; basis functions; eigenvectors; electric surface current density; electric-field integral equation; free-space Green function; lateral coax-fed waveguide; magnetic surface current density; moment-method analysis; perfectly conducting waveguide structures; round teeth; triangular patches; twisted waveguide; waffle-iron filter; Admittance; Apertures; Current density; Green´s function methods; Magnetic fields; Magnetic separation; Surface waves; Transmission line matrix methods; Waveguide discontinuities; Waveguide junctions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
