Abstract: In this letter 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, can operate on a higher time-step than previous nodes and it is shown to have a reduced velocity error for axial propagation.
Key words: TLM method, microwave circuits, numerical simulation, symmetrical condensed node.