This paper designs and simulates a $2 \\times 2$ microstrip patch array antenna for one-dimensional beam switching applications in the sub-6 GHz 5G frequency band. It incorporates a planar 90° hybrid ...

Abstract: Sparse arrays designed based on fourth-order difference co-array (DCA) can achieve significantly higher uniform degrees-of-freedom (uDOFs). However, most existing fourth-order sparse arrays ...