The segmentation concept for frequency-domain TLM method combined to the variable mesh technique

Abstract

In this paper, the segmentation method is implemented in the frequency-domain transmission line matrix (FD-TLM). The method is combined with the variable mesh technique. Although the procedure is general, the examples shown concern the design of waveguide discontinuities. Thus, the structure is decomposed into several sub-domains and a finer mesh is used in the computational domain around discontinuities. An important reduction in computing time and memory resources is achieved with a good accuracy.

Keywords:

• segmentation
• filter design
• frequency domain
• optimization
• TLM
• variable mesh