Affiliation:
1. GIET University, Deparment of Physics, Gunupur, Odisha, India
2. Deparment of Physics, Chikiti Mahavidyalaya, Chikiti, Odisha, India
Abstract
In this manuscript, the design of a compact-size circular patch Ultra-
Wideband (UWB) antenna with enhanced fractional bandwidth (BW), peak
realized gain (PRG), and proper impedance matching is presented. The
modified antenna has three circular slots etched from the circular path
(top), fed by a 50? microstrip feed line. These circular slots play a
significant role in improving the impedance bandwidth. Additionally, the
partial ground plane with a slot integrated with a rectangular stub is used
in order to achieve a bandwidth for an operating range of 3.25 GHz - 27 GHz.
The proposed antenna is designed, fabricated, and tested in the laboratory
in order to validate with simulation data. The designed antenna size is 25
mm ? 20 mm ? 0.508 mm. The experimental value of 10 dB return loss
absolute/fractional BW of 23.75 GHz/157.08% at the center frequency,
minimum/ maximum gain of 5.90/12.05 dBi, and maximum /minimum radiation
efficiency of 85/97 % are achieved from the 3.25 GHz to 27 GHz frequency
range. In addition, a comparison table is provided to prove the
state-of-the-art of the antenna?s design. The proposed antenna is suitable
for wireless services, radar, and satellite communication.
Publisher
National Library of Serbia