High Gain and Compact Microstrip Patch Antenna Array Design for 26 GHz Broadband Wireless Systems

Abstract

Millimeter waves pave the way to new mobile network domains due to their expected very high speed. Several applications such as Vehicle-to-anything (V2X) will benefit from using millimeter bands to offer very high transmission rates with low latency. However, given the high attenuation of millimeter waves in free space, special attention should be paid to antenna design to allow high gain and wide bandwidth with a compact and integrable antenna structure. This paper presents a new $4\times 8$ microstrip patch array antenna operating in 26 GHz band. The proposed antenna is designed on a Rogers Duroid RT5880 substrate with a dielectric constant of 2.2 and a height of 0.508mm. The simulations are conducted with HFSS CAD tool. The antenna simulation results show good performances with a bandwidth of 1.1 GHz, a gain of 21.26 dBi and a compact size of $110\times 80$ mm2, which are very promising for 5G V2X communications.