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77GHz Low-Cost Single-Chip Radar Sensor for Automotive Ground Speed Detection

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7 Author(s)
Nagasaku, T. ; Central Res. Lab., Hitachi, Ltd., Kokubunji ; Kogo, K. ; Shinoda, H. ; Kondoh, H.
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A new 77 GHz single-chip radar sensor has been developed, which encapsulates a GaAs p-HEMT transceiver MMIC with an on-chip patch antenna in a resin-molded package integrated with a resin collimating lens on the top to achieve an EIRP of 13.5 dBm and a receiving gain of 8 dB. The packaged sensor, measuring 6.5times4.4times6.0 mm3 with only DC and baseband- frequency leads, offers ease of handling with an extreme low-cost potential for a variety of applications. When adopted to an automotive ground speedometer integrated with an signal processing unit, the sensor demonstrated accurate and reliable detections of vehicle speed with a standard deviation of 1.5% under normal driving conditions.

Published in:

Compound Semiconductor Integrated Circuits Symposium, 2008. CSIC '08. IEEE

Date of Conference:

12-15 Oct. 2008