This paper presents, time and frequency domain analysis of a compact tri-band notched UWB (ultra-wideband) antenna with integrated Bluetooth frequency for wireless applications. Modifications in radiating element and DGS techniques are used to achieve high impedance bandwidth. The antenna operates at UWB frequency band 3.1-10.6 GHz as well as bluetooth frequency 2.4 GHz. The band notch characteristics are at Wi-MAX (3.3-3.7 GHz), WLAN (5-6 GHz), X-Band Satellite communication (7.1-7.76 GHz). These notches are obtained by etching different slots in ground plane and in radiating element. Gain, group delay, pulse transmission and radiation patterns of the proposed antenna are also investigated. A prototype of antenna is fabricated and reflection coefficient is measured. A comparison has been made between proposed antenna and previously published UWB antennas.