The Antenna Testing and Approval Laboratory (Laboratorio de Ensayos y Homologación de Antenas: LEHA) has been working in antenna measurement since 1980, for industrial activities, research and educational purposes, and it is part of the radiation group of the UPM¿s Signals, Systems and Radiocommunications (SSR) Department. LEHA¿s quality director is Prof. Manuel Sierra Castañer and