Novel Ka-Band Phase Shifter Design Based on Vanadium Dioxide Switches for 5G Applications

A novel design for a phase shifter at Kaband on silicon and in coplanar wave guide (CPW) is presented. The proposed design incorporates a novel configuration of vanadium dioxide (VO2) switches. A set of two shunt and two series VO2 single pole single throw (SPST) switches are configured to be controlled via a single thermal actuator. The proposed design reduces the number of thermal actuators by a factor of four. Ultimately, the proposed design demonstrates a low maximum insertion loss of 6.5 dB with 32 selectable phase shifts and consistent phase response over the range of 37-40 GHz.