Combined lumped element network and transmission line model for wireless transmission links

Multi-port models of wireless transmission links yield an accurate description of the physical properties of the transmission link. A systematic procedure for the generation of combined lumped element/delay line equivalent circuits for wireless transmission is described. Lumped element equivalent circuits provide compact models of distributed microwave circuits. The modeling of wireless transmission links exhibiting long signal propagation delay times, however yields equivalent circuits with a large number of lumped circuit elements. The number of circuit elements can be considerably reduced by including transmission line elements in the equivalent circuit model. As an example a wireless transmission link between monolithic integrated antennas is modeled.