Efficient modelling of the near field coupling between phased array antennas

In this contribution we present an accurate modelling of the coupling between two patch array structures which act as transmitting and receiving antenna in a 24GHz near range sensor system. The EM analysis is performed by means of the efficient transmission line matrix-integral equation (TLM-IE) method which permits to model exact radiating boundary conditions. The calculated return-loss and mutual near field coupling between the antennas is investigated and compared to measured results.