Title :
Spherical-multipole analysis of the field within a canonical GTEM-cell
Author :
Hannemann, J. ; Klinkenbusch, L.
Author_Institution :
Comput. Electromagn. Group, Kiel Univ., Germany
Abstract :
The GTEM-cell has been a subject of extensive research. However, due to its relatively large dimensions and to the sharp edges of the septum, numerical treatment of the cell´s field may become very difficult. Furthermore, numerical simulation to determine the distortion of the empty cell´s field by a device under test becomes even more complex. This paper introduces a mostly analytical model for the GTEM-cell that is obtained by changing the geometry of the cross section from rectangular to elliptical. This allows an exact solution for the empty cell´s field by means of a problem-adapted dyadic Green´s function in sphero-conal coordinates. The solution may be combined with other numerical methods to obtain a more realistic modelling of the coupling phenomena. First numerical results are also shown.
Keywords :
Green´s function methods; electromagnetic coupling; electromagnetic fields; numerical analysis; test facilities; analytical model; canonical GTEM-cell; cell field distortion; coupling phenomena; device under test; elliptical cross section; empty cell field; exact solution; integral equations; numerical methods; numerical simulation; problem-adapted dyadic Green´s function; septum sharp edges; spherical-multipole analysis; sphero-conal coordinates; Analytical models; Computational electromagnetics; Conductors; Eigenvalues and eigenfunctions; Equations; Geometry; Green´s function methods; Impedance; Numerical simulation; Testing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1999. IEEE
Print_ISBN :
0-7803-5639-x
DOI :
10.1109/APS.1999.789474
