Slotted Patch antenna with dual notched bands for UWB applications

摘要

A new ultra-wideband (UWB) antenna is presented in this paper. The proposed antenna shows the UWB operation in the frequency range of (3 GHz–13.5 GHz) with (S11 <-10dB) except the two notched bands centered at 4.6 GHz and 6.5 GHz. The 30 x 35 x 1.6 mm3 antenna is mounted on dielectric substrate FR-4 with thickness h=1.6mm, relative permittivity εr=4.3 and loss tangent of 0.025. In order to reconfigure the proposed UWB antenna to reject two bands, the final antenna design is based on inspired split ring resonator (SRR) and rectangular slots, positioned in the middle of the radiating patch. All the design and simulated results are performed using CST Microwave Studio and verified using another electromagnetic simulator HFSS. The results show wide bandwidth and good omnidirectional radiation patterns in the passband. The novelty of the proposed antenna is the ability to support UWB bandwidth requirements and to reject specific bands to avoid possible interference with existing communication systems.