Accurate Modeling of Miniaturized Microstrip Antenna on Locally Non-Homogeneous Substrates by the TLM-IE Method

In this contribution we present an accurate modeling of a novel class of patch antenna which realizes a compromise between radiation efficiency and dime nsions. The e.m. 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 is compared to the measured one, showing very good agreement.