Design of 77GHz Automotive Radar Antenna Based on FOWLP

This paper presents the integration of 77-GHz antennas with a 77-GHz transceiver chip on fan-out wafer level packaging (FOWLP) with a compact size of 13 × 13 × 0.3 mm
³
for automotive radar systems. The antenna consists of two transmitting antennas and two receiving antennas. H-shape slot coupled patch arrays are chosen as the antenna radiators.The system covers the 77-GHz band and achieves the maximal peak realized gains of 7.11 dB and 12.11 dB for transmitting and receiving antennas, respectively. The isolation between transmitting and receiving ports is lower than -25dB in 77-GHz band.