This IDC study examines the semiconductor vendors that offer chipsets going into 802.11 WLAN markets.

"In 2005, 802.11g accounted for the majority of the market, with a 75% share; 802.11b fell to 5%; dual band grew to 16%; and pre-n was slightly higher than 3%. Vendors that diversified with dual band while focusing on 802.11g were the beneficiaries of this technology shift. The 802.11g market grew 35% year over year, from $612 million in 2004 to $825 million in 2005." - Celeste Crystal, senior research analyst, Semiconductors