Compact integrated slot array antennas for the 79 GHz automotive band
International Journal of Microwave and Wireless Technologies(2010)
摘要
This paper presents two compact slot array antennas for the 79 GHz automotive band integrated into a 28 um thick benzocyclobutene (BCB) substrate attached to a 325 um thick 5-20 Ωcm bulk resistivity silicon wafer. The two antennas are a transmit (TX) 1 × 8 slot array antenna with a size of 1 × 23 mm and a receive (RX) 8 × 8 slot array antenna with a size of 15 × 23 mm. Promising performance has been measured with the TX and RX sub-array antennas (gain >4 dBi) with good matching to 50 Ω (RL>10 dB) in the frequency range 70-90 GHz. By using a metal cavity, mounted on the back of the antenna, parallel plate modes could be reduced and the gain could also be increased by 2 dB. The measured and the simulated results are consistent.
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关键词
receiving antennas,slot antenna arrays,transmitting antennas,benzocyclobutene substrate,frequency 70 ghz to 90 ghz,integrated slot array antennas,receive antenna,size 1 mm,size 15 mm,size 23 mm,transmit antenna,silicon wafer
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