<p>Wireless communication's rapid expansion has made it applicable in a wide range of situations. The wireless on-/off body communication is one of them. Efficient antennas for wireless data transport are necessary to do this. Thus, this work reports a low profile Ultra Wideband (UWB) antenna. The semi-flexible Rogers 5880 substrate was used in the design of the antenna, which has dimensions of 35 × 45 × 0.8 mm³. An ultra-wide bandwidth of 10 GHz was attained with a strong peak gain of 6.7 dB and efficiency ranging from 80 to 92% in the UWB spectrum by using partial ground and asymmetric feed approaches. In order to facilitate both on- and off-body communications, electromagnetic bandgap (EBG) structures are used to lower specific absorption rate (SAR) and produce a directed radiation pattern at a specific frequency. To achieve wideband response, a novel conjoint connecting method of the EBG structures was used. In addition to on-body measurements in different body areas, real-time measurements were conducted in moist settings. Analysis of the antenna's route loss in free space, on-body, and off-body scenarios revealed that it was remarkably low. The group delay was examined using similar settings, and the least amount of variation in group delay was observed. The fidelity factor was used to examine the pulse similarity, and all of the results met the necessary standard values. With good consistency between simulated and measured results, the obtained results outperform those found in the literature.</p>