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Definition: Wi-Fi designations


The five Wi-Fi (802.11) technologies (a, b, g, n and ac) are often abbreviated BGN, ABGN and A/B/G/N/AC in the specifications for wireless routers, Wi-Fi access points and the Wi-Fi in portable devices. For example, "N" means 802.11n.

Multiple Radio Chains (2x2, 4x2)
The 802.11n and 802.11ac technologies support multiple antennas, and a "2x2" or "4x2" in the specification means two transmitting and two receiving or four transmitting and two receiving antennas. For more information, see Wi-Fi, 802.11, wireless router and dual-band router.

   802.11      Frequency
   Standard    Band

   11a         5 GHz

   11b         2.4 GHz
   11g         2.4 GHz

   11n         2.4 GHz and 5 GHz

   11ac        5 GHz