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77GHz Comb Array Antenna Based on FOWLP for Automotive Radar Applications

An H-shape slot coupled automotive radar microstrip comb array antenna is proposed in this paper. The designed antenna has the advantages of low profile, low cost and easy integration with RF chips. In order to miniaturize the size and verify the applicability of the proposed antenna for automotive radar applications, one 1×5 array is designed at 77-GHz. The simulation results show that the -10 dB input impedance bandwidth covers the 77-GHz band and the maximal peak realized gain is 10.14 dB at 77 GHz. In addition, compared with the traditional series fed microstrip rectangular patch array antenna, the comb array antenna has more compact structure.