An Elliptical Patch UWB Antenna with Reduced Ground Plane Effect

Abstract

The design and analysis of printed antenna with the reduced ground plane effect, fed by microstrip line for Ultra Wide Band (UWB) communication systems is presented. The simulated results indicate that by cutting an elliptical patch at radiator, the proposed antenna yields a wide operating bandwidth of 2.1-13.8 GHz for -10dB return loss. In particular, the ground-plane effect on impedance performance is greatly reduced by cutting the patch from the radiator because the electric currents on the ground plane are significantly suppressed at the lower edge operating frequencies. In addition to being small in size of 15mm x15mm, the antenna presents three-dimensional omni directional radiation across the entire UWB bandwidth with high gain. The proposed antenna has satisfactory band notched characteristics with the peak value of the VSWR in the stop band is 8.

Multiband monopole antenna with minimised ground plane influence for portable devices

“…Different approaches have been proposed in reducing the effect of the ground plane [16][17][18]. In [16], the ground plane effect in a swan-shaped ultra-wideband antenna is reduced by introducing a rectangular notch vertically from the radiator.…”

“…In [16], the ground plane effect in a swan-shaped ultra-wideband antenna is reduced by introducing a rectangular notch vertically from the radiator. In [17], an ellipticalshaped section is removed from the radiator to minimise its ground effect. This same method is also used in [18] by cutting a slot out from the radiator to reduce the effect of the ground plane.…”

“…Section 5 presents the results and discussions and finally, the concluding remarks are given in Section 6. [16] rectangular printed monopole antenna UWB rectangular slot on radiator [17] rectangular printed monopole antenna UWB elliptical slot on radiator [18] rectangular printed monopole antenna UWB Rectangular slot on radiator [19] printed elliptical monopole antenna UWB L-shaped slot on ground plane [20] clamshell antenna GSM-850/900/1800/100/UMTS rectangular slot on ground pane proposed work loop-type printed monopole antenna LTE Band -13/11/3, GPS, WLAN/WiMAX feeding line optimisation on ground plane microstrip feed line (w 4 × i) excites the structure to enable multiband operation. It is chosen for its simplicity in matching and its planar form.…”