Wikipedia
IEEE 80211g-2003 or 80211g is an amendment to the IEEE 80211 specification that operates in the 24 GHz microwave band The standard has extended throughput to up to 54 Mbit/s using the same 20MHz bandwidth as 80211b uses to achieve 11 Mbit/s This specification under the marketing name of Wi-Fi has been implemented all over the world The 80211g protocol is now Clause 19 of the published IEEE 80211-2007 standard, and Clause 19 of the published IEEE 80211-2012 standard 80211 is a set of IEEE standards that govern wireless networking transmission methods
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