Generally graded TLM mesh using the symmetrical supercondensed node

An implementation of an improved all-link line symmetrical condensed node for the TLM method is presented. The new node has the advantage of containing no stubs but is still capable of modelling inhomogeneous media on a generally graded mesh; it requires less storage and run time than the stub-loaded and hybrid nodes. It can also operate on a higher time-step than previous nodes and it is shown to have a reduced velocity error for axial propagation