DefinePK

Abstract

A tapered microstrip fed printed antenna operating at multi resonant frequencies is studied. The suggested antenna resonates at frequency of 2.45 GHz with -23.8 dB return loss, 4.2 GHz with -14.6dB return loss, 9.6 GHz with -20.8 dB return loss to cover Industrial, Scientific and Medical (ISM), radio altimeter and airborne synthetic aperture radar (SAR) applications respectively. It is also useful in the frequency range of WLAN applications. The suggested antenna is printed on FR4 substrate having the dimensions of 32 x 32 x 1.6 mm3. On one side of FR4 substrate, a pentagonal shaped antenna with jointed L shaped and inverted L shaped strips is printed. On the other side we have an L shaped partial ground structure. The dimensions of all parameters were optimized to get the desired multi resonant frequencies using HFSS simulation.