A planar parasitic array antenna for tunable radiation pattern

Abstract

A planar cross-type parasitic patch array antenna has been successfully demonstrated to give tunable radiation patterns. Even with readily available commercial varactors, approximately 30 degrees of tunability is achieved. The simulated result is well matched to the measured result. If different varactors were used with an increased capacitance range then the antenna pattern could be tuned more, however more side lobes would also be introduced.