Compact ultra-wideband antennas with multiple notches

In this paper, the compact ultra-wideband (UWB) antenna with multiple notches (stopbands) is implemented based on a back loaded multi-modes substrate integrated waveguide (SIW) cavity and associated with L-type resonators. Three sharp notches at 2.4GHz, 3.5GHz and 5.8GHz are achieved in simulation and also experiment, which can then be applied in the UWB communication systems with the anti-jamming ability or low interference ability to other wireless systems, such as the 2.4GHz WLAN, 3.5GHz WiMax or 5.8GHz WLAN etc.