π‘ Sonar tech led to 5G revolution by Indian engineer
In 1971, an Indian naval officer was tasked with developing an indigenous sonar system for the Indian Navy. This engineer, Arogyaswami Paulraj, later pivoted his research focus towards wireless communication technology. He pioneered the MIMO concept in 1992, which uses multiple antennas for faster data transmission. This groundbreaking work became the foundation for modern 4G, 5G, and Wi-Fi networks globally. His journey shows how initial military problems can lead to massive consumer tech breakthroughs. π‘