MEMS reconfigurable antennas

New architectures for microelectromechanical system (MEMS) reconfigurable V ee-antennas and RF switches are presented. The planar antenna structure can be dynamically reconfigured to steer the radiation beam or change the shap e of the beam using electrically-controlled microactuators. The radiation p atterns and antenna impedance were investigated with a 17.5 GHz MEMS Vee-an tenna for proof-of-concept. The beam steering and shaping capabilities have been demonstrated. A derrick-type RF switch, suitable for T/R module appli cations, was also investigated. The derrick-type switches have potentials t o provide high isolation and low insertion losses. (C) 2001 John Wiley & So ns, Inc.