Three-dimensional FDTD Modeling and Analysis of Microwave Circulators
An extended finite difference time domain (FDTD) scheme for three-dimensional modeling of ferrite loaded microwave circuits is applied to the analysis of microwave circulator structures. An FDTD method for the simulation of magnetized ferrite material is introduced, and a brief stability analysis is given. The effectiveness of the algorithm is demonstrated by the analysis of several examples and a comparison with measurements. The differences that arise from the assumption of either a uniform or non-uniform static field distribution inside the ferrite are analyzed and evaluated.
Document Type: Original Article
Affiliations: Jens Lenge, Dirk Schulz, Universität Dortmund, ET-HFT, Otto-Hahn-Str. 6, 44221 Dortmund, Germany
Publication date: January 1, 2003