Hexagonal Patch Microstrip Antenna with Parasitic Element for Vehicle Communication

In this paper, a compact conformal antenna is proposed for vehicle to X (V2X) communication applications. The Hexagonal-shaped geometry is applied in the design to attain desired band in the vehicular communication spectrum. The proposed dimension antenna is 50mm x 50mm x 1.6 mm. By loading the hexagonal patch and annular slot with different sizes at each angle, it realizes to enhance bandwidth and increase the gain. This article explains how we found that tuning and overlapping of resonant frequency was mainly achieved by hexagonal parasitic element. The prototype antenna had been design using Ansys HFSS v.15. The simulation result shows that the antenna had resonant frequency at 5.9 GHz with return loss value of 32.95 dB. The antenna had VSWR value of 1.0189. This microstrip antenna had thickness of 1.6 mm, so it should be easy to fit up hidden in front of a vehicle for vehicular communication.