Millimeter Wave Automotive Antenna for 5G Communications

In this paper an antenna module for automotive 5G communication is presented. The antenna is designed to cover all the 3GPP n258 frequency band i.e. from 24.25 GHz to 27.5 GHz. At these frequencies, the path loss and obstacles attenuation are high. For this reason, to reach an acceptable communication distance a relatively high gain is required. Furthermore, to achieve a more robust system to multipath interferences the antenna is designed to operate with dual linear polarization. The proposed antenna is composed by an array of 8 dual polarized stacked patches. Finally, in order to suppress the radiation pattern distortion due to surface waves (SWs) propagation, an Electronic Band Gap (EBG) structure is implemented. To validate the design a prototype has been realized and measured.