A MEMS switch and method of fabrication comprises a RF transmission line;
a RF beam structure comprising a RF conductor; a cantilevered
piezoelectric actuator coupled to the RF beam structure; a plurality of
air bridges connected to the cantilevered piezoelectric actuator; and a
plurality of contact dimples on the pair on the RF beam structure. The RF
transmission line comprises a pair of co-planar waveguide ground planes
flanking the RF conductor; and a plurality of ground straps, wherein the
RF transmission line is operable to provide a path along which RF signals
propagate. The cantilevered piezoelectric actuator comprises a dielectric
layer connected to the RF beam structure; a bottom electrode connected to
the dielectric layer; a top electrode; and a piezoelectric layer in
between the top and bottom electrodes, wherein the top electrode is
offset from an edge of the piezoelectric layer and the bottom electrode.