MINIATURIZED RECTANGULAR PLANAR PATCH ANTENNA USING DGS FOR WIFI APPLICATION

Abstract

In this article, a miniaturized and meander line slot loaded rectangular planar patch antenna using DGS for S, C and ku-band application is proposed. A new design of Inverted U- shaped defected ground structure is employed in the ground plane. To attain this goal, at first, we design a simple conventional planar antenna (Ant#1) which operates at16 GHz with a return loss (S11) of −34.97 dB. To get miniaturization of 78.12%, 22.8% and 55% , an inverted U- shaped defected ground structure resonates at 3.5GHz single band frequency with a return loss (S11) of -28.79 dB. (Ant#2), and meander line slot loaded Rectangular Planar Patch Antenna Using modified DGS is designed (Ant#3), which operates at dual-band frequencies 7.18 GHz and 12.35 GHz with a return loss (S11) of, −21.55 dB and −25.79, respectively, is presented. The proposed antenna is designed on a Roger RT Duroid substrate with thickness 0.8 mm and dielectric constant 2.2.The Entire size of antenna is 16 X 16 mm2 and it is simulated by two distinct solvers HFSS and ADS layout.