DUAL WIRELESS TERMINAL CARD FOR 2.3GHZ BAND MOBILE INTERNET SERVICE AND 2.4GHZ BAND WIRELESS LAN SERVICE, PARTICULARLY FOR ALLOWING A USER TO SELECTIVELY USE THE WIRELESS LAN SERVICE AND MOBILE INTERNET SERVICE ACTIVATED BASED ON A HOT SPOT OF A ROOM OR A SMALL AREA

摘要

PURPOSE: A dual wireless terminal card for 2.3GHz band mobile Internet service and 2.4GHz band wireless LAN service is provided to accomplish a compact size at a low cost by utilizing a general chip of a 2.4GHz band and 5.6GHz band dual wireless LAN card and commonly using core components. CONSTITUTION: A wideband antenna(310) transmits/receives signals of 2.3GHz band and 2.4GHz band. A wideband RF input/output unit(320) separates transmission/reception of a signal, amplifies the signals of 2.3GHz band and 2.4GHz band and transmits them. A 2GHz RF chip(330) sets a frequency of 2.3GHz band and a frequency of 2.4GHz band through an IEEE802.11a channel number. A switch unit(340) discriminates signals of 5GHz, 2.3GHz and 2.4GHz and also discriminates a mobile Internet service of 2.3GHz band and a wireless LAN service of 2.4GHz band according to the IEEE802.11a channel number. An end unit(350) removes the discriminated signal of 5GHz band. A 5GHz RF chip(360) sets the 5GHz frequency band through the IEEE802.11a channel number. A MAC/BB chip(370) provides an interface for connection with a terminal and performs a function of MAC/control in a CSMA/CA method for the IEEE802.11a connection and modulation/demodulation of a baseband signal.