24-GHz microstrip grid array antenna for automotive radars application

A single-ended microstrip grid array antenna has been designed and measured for 24 GHz automotive radars application. It has been designed on Rogers 5880 substrate with dimensions of 60×60×0.787 mm. The antenna exhibits 2.45 GHz impedance bandwidth, 19.26 dBi peak realized gain and broadside pencil-beam radiation pattern with low side lobe and weak cross-polarization.