A Multi Band Dual Slot CPW Fed Circular Ring Microstrip Patch Antenna for 5G mmWave Applications

This article presented a small circular ring patch antenna with multiple bands for 5G mmWave applications. By operating over five distinct frequency bands, this innovative approach increases performance metrics by the incorporation of a dual hexagon shaped slot into the patch. An antenna's return loss is substantially increased with the addition of the slot. A 2 mm thick silicon dielectric material with a dielectric constant of 11.7 was used in the proposed structure. The total dimension of the antenna is 10  10  2.07 mm3. While maintaining a small radiator size, the suggested antenna accomplishes multi band operation. The developed radiator can function in five distinct frequency ranges, from 13.7 to 13.8 GHz, 18.4 to 18.6 GHz, 21.3 to 21.4 GHz, 21.9 to 22.1 GHz, and 23.6 to 23.7 GHz, with five distinct resonance frequencies of 13.75, 18.5, 21.35, 22.0, and 23.7 GHz, respectively. A peak gain of 7.9, 9.4, 9.2, 8.9 and 8.3 dBi, radiation efficiency of 77, 88, 84, 81 and 79% are attained at resonance. The suggested antenna has many benefits, such as a high radiation efficiency, a high gain, and support for multiple bands. In order to enhance performance over the operational frequency range with regard to the reflection coefficient (S11), a thorough parametric analysis was carried out using the CST simulator. The effects of different conducting materials (iron, gold, and copper) and dielectric materials (FR-4, polyimide, and silicon) on the proposed antenna's response are also investigated. This article details the process for designing antennas and analyses their field and current distributions.