Monopole Ellipse Antenna for Ultra-Wideband Applications

In this paper, an Ultra wideband (UWB) ellipse monopole antenna is presented. The proposed antenna consists of an ellipse patch fed by a coplanar waveguide (CPW) transmission line. The antenna provides coverage for the UWB spectrum, achieving reflection coefficients ≤−10 dB from 2.83 to 10.66 GHz, thereby yielding a 7.77 GHz impedance bandwidth. The impedance bandwidth is achieved through a variation of the minor axis of the ellipse patch. The antenna gain is slightly enhanced by a center cut at the top ground plane. Simulations show quasi omnidirectional radiation patterns for the proposed antenna at three resonance frequencies of 4.8, 6.7 and 9.35 GHz within the UWB spectrum