%X In this letter, the structure of the prototype of a smart antenna working in the 2.4 GHz band is described. The radiating structure is composed by a 8-elements linear array with a finite reflecting plane and its adaptive behaviour is obtained by means of a set of electronically-driven vector modulators that control the array weights. The antenna system is equipped with a control software based on a Particle Swarm Optimizer (PSO) algorithm that enables the system to adapt to the complex interference scenario. A selected set of numerical and experimental results are reported and discussed to assess the effectiveness of the proposed architecture. The definitive version is available at www3.interscience.wiley.com %D 2008 %A Renzo Azaro %A Luca Ioriatti %A Mauro Martinelli %A Manuel Benedetti %A Andrea Massa %I University of Trento %K Smart antennas, Adaptive Arrays, Antenna Prototype %T An experimental realization of a fully-adaptive smart antenna %L elediasc12326