International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering (IJAREEIE)
In this paper, the authors present the experimental investigations carried out for obtaining dual band operation of rectangular microstrip antenna by using aperture coupled feeding technique. The antenna resonates for two resonant frequencies at 11.36GHz and 14.26GHz with minimum return losses of - 22.97dB and -22.24dB respectively. The antenna operates at two bands BW2 and BW3. These two bands are due to independent resonance of patch and double U-slots which are excited through H-coupling aperture. The lower resonant frequency f1 is the fundamental resonance of the rectangular patch.