A novel low-profile inset-fed ultrawideband printed antenna with triple band-notched characteristics is proposed. Wide inverted U-shaped and crescent-shaped slots are used to achieve first and second notched bands in the 3.3-3.7 GHz and 5.1-5.9 GHz ranges for WiMAX and WLAN systems, respectively. Additionally, an altered ground plane with an open-ended L-shaped slot generated a third notched band in the 7.25-7.85 GHz range for downlink of Xband satellite communication systems. The center frequencies of the stop bands are adjusted by altering the parameters of corresponding slots. The antenna prototype is built on a 28 mm × 24 mm Rogers RT/duroid 5880 (εr = 2.2) substrate over a partial ground plane. Two concave circular curves were deployed on the patch with an inset feeding in order to obtain wideband performance in the 2.5-12 GHz (VSWR < 2) range with relatively good matching. The antenna prototype was fabricated and tested, and it was found to exhibit wideband performance, acceptable gain, and stable radiation pattern.