On Package Connected Array with Beam Steering Capabilities at Millimeter-Waves

In this work, we present a small, compact, beam steerable on package connected array antenna (CAA) for millimeter-wave (mm-wave) applications. A single slot-based CAA (SCAA) is designed at 28 GHz with a bandwidth of 2.67 GHz. A backing reflector (BR) representing the lower layer is included beneath the CAA with an air separation to make it unidirectional. 11.9 dBi of far-field gain is obtained having 2.5 GHz bandwidth at broadside direction with only 4 antenna elements. The designed SCAA can be steered upto +/- 41 and +/- 38 degrees for without and with BR respectively. Then, the single SCAA is placed on a package stack-up with small dimension (18. 2 mm x 4.3 mm x 1 mm) which resulted in having 2 GHz of bandwidth. The comparative results between the proposed and other available designs show that the proposed on package SCAA provides wider bandwidth and a smaller form factor.