Microstrip Fed Elliptical Slot UWB Antenna for Band Notch Response

A simple, low cost, small size printed microstrip-fed elliptical slot ultra-wideband antenna having band-notched response are proposed in this paper. By incorporating concentric elliptical arc within the elliptical shaped slot the band notch response is realised. The proposed antennas are optimized using IE3D, fabricated on low cost FR-4 substrate with dielectric constant 4.3 followed by measurement. The measured results indicates that the proposed antenna having dimensions of 60 × 60 × 1.6 mm3 has a impedance bandwidth over the frequency range 2.15-10.6 GHz with Return Loss ≤ -10 dB, except 2.8-3.6 GHz with elliptical slot with concentric elliptical arc. The proposed antenna shows stable gain, almost omnidirectional radiation pattern, insignificant group delay variation in the passband frequencies. Acceptable results are achieved in frequency as well as time-domain analysis for antenna.