77GHz Corporate Feed Series Microstrip Antenna Array for the Applications of Automotive Radar

To avoid accidents and to make driving safe automotive radars are being developed that can accurately locate the presence of vehicles, pedestrians, and obstacles. Antenna being an important component of automotive radar must have good performance, smaller size, low cost, and easy to fabricate characteristics. Recently, microstrip patch antennas having smaller size and easier to be integrated in vehicles are preferred over reflector and lens antennas. In this paper, corporate feed series microstrip antenna arrays are proposed for the automotive radar applications that work on 77 GHz. To achieve the better performance of the antenna, the width of the patch elements is tapered using Taylor Series. A 5×4 designed antenna array has achieved the gain of 18.7 dBi and bandwidth of 1.507 GHz with sidelobe levels of 16.6 dB. Simulation results of this designed antenna is far better in terms of antenna dimensions, cost, and easy fabrication when it is compared with other designed antennas.