Mobilian chip set supports simultaneous 802.11b, Bluetooth operation

摘要

Manhasset, N.Y. - Mobilian Corp. is sampling TrueRadio, a two-piece chip set that supports the simultaneous operation of 802.11b wireless-LAN and Bluetooth radios. First demonstrated two years ago at Fall Comdex, the chip set will enable the manufacture of a PC card featuring the two wireless technologies with a bill of materials under $35, the company said. Mobilian's solution uses a direct-conversion WLAN radio and a low-IF radio for the Bluetooth connection. "Bluetooth has many more dc elements than the .11b radio," so elimination of dc offsets was a main issue in going to full direct conversion, said marketing director Wade Gill-ham. The simultaneous operation (Simop) architecture en- ables higher integration and thus allowed Mobilian to put most of the radio elements on one chip: the MN22100. Only power amplifiers remain off-chip.