Novel Integrated Antenna Array for Automotive Radars Operating at 77 GHz

This paper introduces a novel microstrip corporate array of wire-grid antennas. Coupled microstrip lines are used in constructing the corporate network and to feed the proposed array. The design is tuned to operate at 77 GHz to be suitable for long-range radar automobile applications. The antenna is designed in a layered medium formed from Rogers films. The proposed antenna is analyzed and partially optimized using Momentum of Advanced Designed System (ADS). The antenna radiates a fan beam, which is relatively narrow in one principal plane and relatively wide along the perpendicular plane. The obtained directivity, gain and radiation efficiency are 19.36 dBi, 17.3 dBi, and 62.6%, respectively.