This paper investigates the computational and experimental evaluation of a wireless communications tri-band, low-cost microstrip patch antenna (MPA). High-frequency structure simulator (HFSS), which is based on the frequency domain finite element method (FEM) simulation technology, is used
to perform the numerical analysis of the proposed antenna. The recommended antenna, which was created and put together on a cheap FR-4 substrate, performs as predicted by simulation and measurement, which is used to support its effectiveness. The proposed antenna resonates in frequency bands of 13.4 GHz, 22.9 GHz, and 26.3 GHz. The antenna's maximum gain values for these resonant frequencies
are 5.66 dBi, 5.75 dBi, and 5.52 dBi, respectively. Nearly omnidirectional patterns offered by the proposed antenna make it ideal for wireless communication devices.