UWB is a wireless technology that transmits binary data—the 0s and 1s that are the digital building blocks of modern information systems. It uses low-energy and extremely short duration (in the order of pico seconds) impulses or bursts of RF (radio frequency) energy over a wide spectrum of frequencies, to transmit data over short to medium distances, say about 15—100 m. It doesn’t use carrier wave to transmit data.Ultra Wide Bandwidth (UWB) can handle more bandwidth intensive applications – such as streaming video – than either 802.11 or Bluetooth because it can transmit data 10 times faster than the typical DSL line, cable modem or 802.11b. It has a data rate of roughly 100 Mbps, with speeds up to 500 Mbps. Compare that with the maximum speeds of 11 Mbps for 802.11b, called Wi-Fi, which is the technology currently used in most wireless LANs. Bluetooth has a data rate of about 1 Mbps.