(802.11n) !!link!!: Wi-fi 4

, formally known as 802.11n , is a widely-used wireless networking standard ratified in October 2009. It marked a major evolution from previous standards like 802.11g by significantly increasing data rates, improving range, and enhancing reliability. Wi-Fi 4 was the first generation to introduce Multiple Input Multiple Output (MIMO) technology, which allows devices to use multiple antennas to transmit and receive data simultaneously. Quick Facts Release Date: October 2009. Max Theoretical Speed: Up to 600 Mbps. Frequency Bands: Dual-band support (2.4 GHz and 5 GHz). Key Technology: MIMO (up to 4x4 spatial streams). Channel Width: 20 MHz or 40 MHz (via channel bonding). Core Technical Innovations

Wi-Fi 4 introduced several breakthrough features that enabled it to outperform earlier versions of the 802.11 protocol: wi-fi 4 (802.11n)