Manuel Sierra CastañerManuel Sierra Castañer is a Professor at Universidad Politécnica de Madrid. He is a Senior Member of the IEEE and the Antenna Measurement Techniques Association (AMTA). He is currently vice-chair of the European Association of Antennas and Propagatio (EurAAP). In 2007, he was awarded the IEEE-APS Schelkunoff Prize Paper Award for "Dual-Polarization Dual Coverage Reflectarray for Space Applications". Read More Read Less