title: A Novel Ku-band Waveguide Phase Shifter based on Piezo-Electric Air Gap Capacitor Tuning Element
abstract: &lt;p&gt;A tuning element with controllable air gap integrated and implemented in a rectangular Ku-band WR62 waveguide is presented. The proposed tuning element concept, consists of two, top and bottom, thin conductive parallelepiped arms, which are placed in the middle of the rectangular waveguide structure. The bottom arm is bending to control the gap width between the two arms, while the second arm is fixed. The curvature of the bending arm is controlled by a piezoelectric actuator, which aff