There is an increasing need for reconfigurable and deformable antennas for high-speed wireless communications and high-resolution sensing systems at millimeter waves [1]. Multipoint wireless indoor communications, automotive radars, target acquisition systems or wireless sensor networks require specific features for the antenna such as beam-steering, beam-forming, polarization diversity and tunability. For beam-steering applications, mechanically beam-steering antennas [2][3] have gained attention because they offer unique features like controllability of the beam direction, nearly constant gain and reduced cost, while usual beam-steering strategies involving phased-array antennas or switched beam antennas face cost, loss and complexity issues at 60GHz.
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