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 ...

Recently, numerous design schemes for high-order sparse linear arrays (SLAs) have been introduced for underdetermined direction-of-arrival (DOA) estimation based on high-order cumulants, which utilize ...