Wireless Innovation Act of 2006 or the Winn Act - Directs the Federal Communications Commission (FCC) to issue a final order that: (1) permits unlicensed, non-exclusive use of unassigned, non-licensed television broadcast channels between 54 MHz and 698 MHz; (2) establishes technical guidelines and requirements for the offering of unlicensed service in such band to protect incumbent licensed services and licensees from harmful interference; and (3) requires unlicensed devices operating in the band to comply with existing certification processes.