Title :
Fast subgrid FD-TD matrix pencil technique for the rigorous analysis of resonant 3D microwave structures
Author :
Ritter, J. ; Arndt, F.
Author_Institution :
Microwave Dept., Bremen Univ., Germany
Abstract :
An improved FD-TD technique is described for the rigorous analysis of highly resonant 3D microwave structures, such as dielectric resonator filters. The method is based on a recursive subgrid procedure, utilizes a robust orthogonalization technique, and employs the matrix pencil algorithm for the frequency-transformation. The S-parameters are extracted from least-square-solutions of over-determined systems of equations for each port. The efficiency and accuracy of the presented FD-TD technique is demonstrated by the example of LANGER´s dielectric resonator reference filter. The analysis of modified filters with up to four dielectric resonators illustrates the flexibility of the method.
Keywords :
S-parameters; dielectric resonators; finite difference time-domain analysis; matrix algebra; microwave devices; microwave filters; passive filters; resonator filters; S-parameters extraction; dielectric resonator filters; fast subgrid FDTD matrix pencil technique; frequency-transformation; least-square-solutions; over-determined systems of equations; recursive subgrid procedure; resonant 3D microwave structures; robust orthogonalization technique; Dielectrics; Frequency; Interpolation; Microwave filters; Microwave theory and techniques; Resonance; Resonator filters; Robustness; Scattering parameters; Transmission line matrix methods;
Conference_Titel :
Microwave Symposium Digest, 1998 IEEE MTT-S International
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4471-5
DOI :
10.1109/MWSYM.1998.700606