Dual notch band UWB antenna with improved notch characteristics

In this article, a novel design of a compact planar Ultra Wideband (UWB) monopole antenna with dual band notched characteristics has been presented. The antenna has a unique structure meeting UWB standards. The proposed antenna is fed through a 50 micro strip feed line, whereas a better impedance is achieved by truncating the ground plane. The dual notches are achieved by incorporating a meandered slot on the radiator patch and U-slot in the feed line. The antenna is fabricated on FR-4 substrate having a compact size of 33x32x1.5mm3. A good agreement is observed between measured and simulated results. The radiation pattern is omnidirectional in H-plane, whereas dipole like radiation pattern is observed in the E-plane. The gain of antenna is stable across the whole UWB except at notched bands. It is shown that any UWB can be notched at any desired frequency band by incorporating appropriate slot length.