This tutorial will discuss design and integration considerations of scalable phased array antenna modules, especially in the context of mm-wave 5G systems. The talk will cover technical challenges that arise in the heterogeneous integration of large mm-wave Antenna-in-Package (AiP) designs: 1) system architecture and functional partitioning among multiple technologies to enable performance and scalability, 2) digital control of phased array beams, and 3) tiling considerations to preserve antenna performance when scaling to large antenna array modules.