A fast spatial-domain method for the suppression of excitation-induced spurious modes in SCN TLM

Lindenmeier S, Isele B, Weigel R, Russer P (1997)

Publication Type: Journal article

Publication year: 1997

Journal

IEEE Transactions on Microwave Theory and Techniques Institute of Electrical and Electronics Engineers (IEEE)

Publisher: IEEE

Book Volume: 45

Pages Range: 1998-2006

Journal Issue: 11

DOI: 10.1109/22.644213

Abstract

An efficient method for the suppression of excitation-induced spurious modes in the symmetrical condensed node (SCN) transmission-line matrix (TLM) method is presented for the general case of dielectric, anisotropic, or lossy media in planar structures. A special mapping of the field-excitation onto the wave amplitudes of the TLM algorithm completely prevents the emanation of the spurious modes. The application of the mapping in the k-ω space can be done for waveguides with low computational effort. The method is generalized for planar structures with high spatial frequencies of the field at the discontinuities. We use precomputed field templates at the entrance of the three-dimensional (3-D) structures. The mapping is mainly done in the space domain based on the quasi-TEM propagation of the guided waves to keep the computational effort low. Instead of the four-dimensional (4-D) k-ω transformation, only independent one-dimensional (1-D) transformations to the wave coefficient of the conductors direction and ω are necessary. In the case of propagation with low dispersion, the expenditure can be further reduced to 1-D transformations with respect to ω. The efficiency of the present method is demonstrated by investigation of a coplanar waveguide and a triplate waveguide

Authors with CRIS profile

Robert Weigel Lehrstuhl für Technische Elektronik

Involved external institutions

Universität der Bundeswehr München DE Germany (DE) Technische Universität München (TUM) DE Germany (DE)

How to cite

APA:

Lindenmeier, S., Isele, B., Weigel, R., & Russer, P. (1997). A fast spatial-domain method for the suppression of excitation-induced spurious modes in SCN TLM. IEEE Transactions on Microwave Theory and Techniques, 45(11), 1998-2006. https://doi.org/10.1109/22.644213

MLA:

Lindenmeier, Stefan, et al. "A fast spatial-domain method for the suppression of excitation-induced spurious modes in SCN TLM." IEEE Transactions on Microwave Theory and Techniques 45.11 (1997): 1998-2006.

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