Is SiP ready to go broadband applications?

•Who can provide flip-chip chipset for 802.11n (or High-throughput-WiFi) now?
•Who can provide flip-chip chipset for 802.16e (or Mobile-WiMAX) now?
•Who can provide flip-chip chipset for UWB, former 802.15.3a (or Wireless-USB, WiNET of WiMedia, Bluetooth 3.0) now?