Effects of Two Identical Notches in the Same and Opposite Non Radiating Edges of a Rectangular Microstrip Patch Antenna

In this paper the effects of two identical notches in the same non radiating edge and opposite non radiating edges have been studied extensively. The effect on resonant frequency and gain with the variation of the notch length and notch width are studied. It has been observed that the notches in the opposite non radiating edges affect more on resonant frequency than the notches in the same non radiating edge of a microstrip patch antenna. About 80.2% size reduction has been achieved by the dual notches in the same non radiating edge and about 87.5% size reduction is achieved for the dual notches in the opposite non radiating edges.