The research presented in this study involves describing and simulating a microstrip patch antenna with a dual inverted triangle and I-slot configuration. The antenna employs FR-4 epoxy as its substrate material. This antenna has the capability to resonate at the Octa frequency in the S, C, X, and Ku bands which range from 2.5 GHz to 22 GHz. Based on the analysis of the simulated data, it has been observed that the antenna exhibits resonance at various frequencies like 2.5, 5, 7, 8.9, 13.7, 15.3, 17.4, and 21.8 Gigahertz respectively, with return losses of -26.01, -24.25, -17.82, -15.71, -34.44, -25.88 and -25 Decibel respectively. The computed impedance bandwidth of the proposed antenna has been determined to be 150 MHz, 300 MHz, 270 MHz, 160 MHz, 7410 MHz (for resonating frequencies 13.7 GHz, 15.3 GHz, and 17.4 GHz), respectively, and 1340 MHz. The achieved directivity of the antenna is 5.14dBi, 5.77dBi, 1.51dBi, 8.35dBi, 1.81 dBi, 2.24 dBi, 10.34 dBi, 6.27 dBi, and 2.46 dBi respectively. This proposed antenna maintains a VSWR that is less than 2 at all frequency bands. This Antenna is admissible for Wi-Fi, WLAN, and satellite communication trends. This antenna resonates at one of the 5G band frequencies i.e., 5GHz.