Compact Dual Band-Reject Uwb Antenna With Sharp Band-Edge Frequency

Abstract

Abstract-A microstrip line fed dual band-reject ultra wideband antenna with sharp band edge frequency of 3.1-10.6 GHz is presented. The antenna consists of a rectangular patch on the front side and a partial ground plane at the rear. A step is cut on the bottom edge of the patch for impedance matching. A split ring slot etched on the radiating patch rejects WiMAX (3.3-3.8 GHz) band, and a pair of inverted S-shaped slot in the partial ground plane rejects WLAN (5-6 GHz) band. In order to eliminate the radiation outside the FCC specified 3.1-10.6 GHz band, a rectangular slot is etched on the ground plane below the feed line. The antenna exhibits UWB band width of 109% except for the notch band. The radiation characteristics are consistent throughout the band. The performance of the antenna is analyzed both in the frequency domain and time domain to assess its suitability for ultra wideband communication. Pulse distortion of the antenna is investigated for both Rayleigh and Gaussian source pulse excitation.

Design of a Planar Uwb Antenna With Band Rejection

“…Different techniques have been used by researchers to design such antennas. In [5] a dual band rejection has been performed via etching split ring slot and S-shaped slot. Another design by [6] was used a C-shaped slit added to an elliptical shape monopole and a pair of λ/4 resonator centered around the microstrip line.…”