Advance Antenna Array Design for Sub-6GHz 5G applications

In the advancement of modern society of wireless technology, microstrip patch antenna (MPA) is most preferred for communication due to its low price, low profile, and simplicity of circuit board fabrication. However, unit MPA deals with problems like poor gain, limited bandwidth. To overcome unit MPA limitations, an antenna array system is a solution. Antenna arrays are efficient in 5G applications due to a higher gain, concentrated more focused beam with much more reliability as the interference are canceled from few of the directions. In 5G, the most common frequency ranges used in it are: 1-6 GHz (Sub-6 GHz), 7-28 GHz, and up to 100 GHz. The key benefit of sub-6 GHz is that it has a higher data rate than 2.4 GHz communications. The advanced design antenna array using CST Microwave studio is focused for 5G applications. Rogers RT5880 LZ of dielectric constant 2.2 has been chosen as the material for its substrate. The antenna array of 2x4 is fed via an inset feeding approach for simplicity in modeling and impedance matching. The designed unit element antenna has a gain of -10.80 dBi, following which an antenna array having 1X4 elements and 2X4 elements has been designed and achieved the return coefficient -22.41dB, gain 2.791 dB and VSWR 1.16 respectively. The designed antenna array will be useful in 5G small cell antennas to fix and transmit signals around obstacles and distribute them more densely