Dual band (28/38 GHz) antenna design for 5G mmWave communication networks

The goal of the 5G millimeter-wave (mmWave) technology is to outperform the earlier wireless technology generations in terms of data throughput, latency, and connection reliability. It has the potential to revolutionize the way information is communicated and accessed. Keeping in mind the potential benefits of mmWave technology, this study presents a planar dual-band antenna design for the prospective fifth-generation (5G) frequency spectrum. The simplicity of the proposed antenna design is achieved by utilizing a rectangular patch antenna with an optimized placement of semi-circular notches and vertical rectangular slits on the patch and the ground plane. An offset microstrip feeding technique is used to excite the antenna. Observations from the simulated and measurements suggest that the proposed antenna offers a dual-band response for the 28 and 38 GHz frequency bands. In addition, a wide impedance bandwidth of 8.9% (26.5-29 GHz) and 21% (34-42 GHz) is achieved in the operating bands. Furthermore, the peak realized gain achieved for both the central bands is approximately 6.29 dBi and 6.73 dBi, respectively.