This document presents a comparative study of two slot loaded microstrip array antenna designs - a rectangular design (TS-RMAA) and triangular design (TS-ETMAA). The experimental results show that the TS-ETMAA design has a 7.35% impedance bandwidth, which is 1.12 times greater than the 6.54% bandwidth of the TS-RMAA design. Theoretical calculations matching the experimental results also show the triangular design having a greater bandwidth of 7.12% compared to 5.55% for the rectangular design. In conclusion, the triangular microstrip antenna provides both enhanced impedance bandwidth and compactness compared to the rectangular design.