Title :
High Gain Wide-Band U-Shaped Patch Antennas With Modified Ground Planes
Author :
Mandal, Kalyan ; Sarkar, Partha Pratim
Author_Institution :
Dept. of Electron. & Commun. Eng, Acad. of Technol., India
fDate :
4/1/2013 12:00:00 AM
Abstract :
A high gain wideband U-shaped patch antenna with two equal arms on poly tetra fluoro ethylene (PTFE) substrate is presented. An inverted U-shaped slot is introduced on the circular or square shaped ground plane just under the U-shaped patch. In this communication the effect of size and shape of the ground plane on impedance bandwidth is studied. Maximum impedance bandwidth of 86.79% (4.5-11.4 GHz) is obtained with circular shaped ground plane with diameter 36 mm. The highest gain achieved is 4.1 dBi. The simulated results are confirmed experimentally. The proposed antenna is simple in structure compared to the regular stacked or coplanar parasitic patch antennas. It is highly suitable for wireless communications.
Keywords :
microstrip antennas; polymers; slot antennas; PTFE substrate; circular shaped ground plane; coplanar parasitic patch antennas; frequency 4.5 GHz to 11.4 GHz; high gain wideband U-shaped patch antennas; impedance bandwidth; inverted U-shaped slot antennas; modified ground planes; polytetrafluoroethylene substrate; regular stacked patch antennas; size 36 mm; square shaped ground plane; wireless communications; Antenna measurements; Bandwidth; Broadband antennas; Impedance; Microstrip; Microstrip antennas; Coaxial probe-fed; microstrip antennas; slot antennas; wide bandwidth;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2012.2233455
