In this book, the first part present the simulations and experimental results of a series of patch antennas in wide band. The conception of these patch antennas are realized by software HFSS "Ansoft-High Frequency Structure Simulator" and ADS "Advanced Design System", themselves based essentially on the variation of the shape of the antenna, conductive material, the nature and the thickness of the substratum to have a structure which resounds in the frequencies used for precise applications. Th ...