Latest trends and advancements in wireless communication require high-performance antenna designs with low profile characteristics like low cost, ease of fabrication/ handling/ maintenance, simple design, lightweight, etc. A microstrip patch antenna is best suitable for such applications due to its low-profile characteristics. A wireless local area network (WLAN) is a short-distance communication network mostly used for linking two or more wireless devices within a limited range. WLANs follow the IEEE802.11 standards which have listed the frequencies used in five different frequency bands i.e., 2.4 GHz, 3.6 GHz, 4.9 GHz, 5 GHz, and 5.9 GHz. This paper consists of the design and simulation of high gain antennas for 2.4GHz frequency band applications using High-Frequency Structure Simulator (HFSS) software.