This article introduces two patch antennas: a single-element antenna (Design I) and a 1 × 2 array antenna (Design II). These antennas have been built and tuned specifically for 5G wireless applications. The single-element antenna and 1 × 2 array patch have been characterized by assessing microstrip antenna properties, including reflection coefficient (S11), VSWR, gain, directivity, surface current, impedance matching, and radiation pattern, operating at 3.5 GHz. For design I, the measurements for the reflection coefficient, VSWR, gain, directivity, efficiency, impedance matching, and surface current are as follows: −32.90 dB, 1.046, 7.87 dBi, 8.37 dBi, 93.34%, 50.06Ω, and 41.1 A/m. Likewise, design II exhibits −53.38 dB, 1.004, 10.3 dBi, 10.7 dBi, 96.3%, 49.33 Ω, and 29 A/m, respectively. The results are in good accord with the simulation results. A strong correlation was observed between the proposed antenna characteristics and prior studies conducted at the same frequency. The outcomes exhibited by this antenna (Design II) indicate significant competitiveness for 5G wireless applications and a viable solution to address the growing need for high-performance wireless communication devices. This research presents a novel and efficient architecture that delivers superior performance, making it ideal for 5G wireless applications.