  Developing reconfigurable millimeter-wave (mmWave) antennas and devices is an
outstanding challenge, with switch technologies being a primary impediment.
Recently, it has been shown that vanadium dioxide (VO2), a thermochromic
material whose resistance changes with temperature, could provide a path
forward in developing reconfigurable mmWave devices. As an initial step towards
this vision, we investigate the integration of VO2 switches in reconfigurable
components at 15 GHz. In particular, a frequency reconfigurable antenna and a
reconfigurable phase shifter are shown. The low loss and minimal parasitics of
VO2 technology have the potential to enable devices at 15 GHz and beyond.

Applied Physics