Microstrip Array Antenna for 24GHz Automotive RADAR

Automotive RADARs are used to distinguish the speed and scope of targets that is near the vehicle. A 24GHz array antenna is widely used for automotive applications. A 1 ×4 patch array antenna for automotive RADAR is presented in this article. The antenna dimension is 30 ×60 ×1.6mm
³
. The antenna produces a frequency of 24GHz. FR4-epoxy is the substrate used which bears a permittivity of 4.4. The proposed antenna has reflection co-efficient of -23.81dB and a gain of 9.7dB. This antenna delivers a VSWR of 1.38 in the working frequency.