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Considering the shortcomings of the existing vehicle-to-vehicle(V2V) communication antennas, this paper proposes a regular hexagon broadband microstrip antenna. By loading shorting pins and etching V-shape slots with different size at each angle of the regular hexagon patch, it realizes impedance matching and obtains better impedance bandwidth. The simulated results show that the relative bandwidth of this antenna reaches 35.55%, covers the frequency band of 4.74 GHz to 6.79 GHz. The antenna acquires an omni-directional radiation pattern in the horizontal plane whose out of roundness is less than 0.5 d B. In addition, the antenna is manufactured and tested, whose tested results are basically consistent with simulated results. Because the height of antenna is 3 mm, it is easy to be hidden on roof of a vehicle for V2 V communication.
Considering the shortcomings of the existing vehicle-to-vehicle (V2V) communication antennas, this paper proposes a regular hexagon broadband microstrip antenna. By loading shorting pins and etching V-shape slots with different size at each angle of the regular hexagon patch, it realizes the impedance matching and taller impedance bandwidth. The antenna acquires an omni-directional radiation pattern in the horizontal plane whose out of the roundness is less than 0.5 d B. In addition, the antenna is manufactured and tested, the antenna is manufactured consistent with a simulated result. Since the height of the antenna is 3 mm, it is easy to be hidden on the roof of a vehicle for V2 V communication.