A NONLINEAR ALGORITHM FOR OUTPUT POWER MAXIMIZATION OF AN INDOOR ADAPTIVE PHASED-ARRAY

An adaptive receiving phased-array antenna is considered as one of the desirable features of the next generation of personal wireless indoor system. Such a feature will render this communication system much les s sensitive to the signal fluctuations due to multipath propagation, T his paper presents a prototype adaptive phased array based on an origi nal nonlinear method, This adaptive algorithm which uses as performanc e criterion the maximization of the array output power to adjust a pha se angle, is developed and applied to antenna system in order to contr ol automatically its directivity,pattern, Numerical results for a line ar eight element array are presented, To test the algorithm experiment ally, an eight element 20-GHz array, constructed using horn antennas a nd analog phase shifters, was used, The results obtained so far with s uch an array are discussed in the context of its eventual implementati on in MHMIC.