TRENDnet TEW-652BRP V1.xR

Overview
OEM Cameo WLN-2206 (see also here), Atheros AP81 based, similar to other Cameo manuf. models such as the TRENDnet TEW-632BRP, D-Link DIR-615 rev C1, D-Link DIR-615 rev C2, and the Encore ENHWI-N2

Links of Interest
On the OpenWrt wiki