KDDI, a Japanese cellular carrier, has developed a microSD WiFi card and exhibited it at Wireless Japan 2009, in Tokyo this week.
KDDI showcased two types of cards, which are manufactured by Mitsumi Electric Co Ltd and Renesas Technology Corp, respectively. Both of them are feature 802.11b/g with a transceiving antenna and other components.
As a wireless LAN IC, Mitsumi Electric employs the Atheros AR6002 chip, whose RF transceiver circuit and baseband processing circuit are integrated, while Renesas Technology uses its “KS3021″ RF transceiver IC and “KS7010″ baseband processing IC.
For both microSD cards, the area of the antenna is about one third that of the microSD card. The release date of the product is yet to be determined.
