DARPA’s ACT & ACT-IV developed software defined RF phased array antennas that perfrom communications, radar, and electronic warfare (EW) simultaneously

https://youtu.be/fGvbnGhIXdQ DARPA’s ACT and ACT-IV programs are reinventing phased array antennas, enabling software-defined systems that unify radar, communications, and electronic warfare—reshaping defense, civil infrastructure, and electromagnetic dominance for the future. Introduction: Reinventing the Radar—Why Phased Arrays Needed a Revolution Phased arrays—electronically steered antenna systems with no moving parts—are at the heart of modern defense, enabling…