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Compact multi range automotive radar assembly with end-fire antennas on both sides of a printed circuit board

  • US 10,401,491 B2
  • Filed: 11/15/2016
  • Issued: 09/03/2019
  • Est. Priority Date: 11/15/2016
  • Status: Active Grant
First Claim
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1. A vehicular radar board comprising:

  • a printed circuit board (PCB) having a first planar surface and a second planar surface opposite the first planar surface;

    a plurality of transmitter end-fire antennas positioned on the first planar surface of the PCB;

    a first plurality of receiver end-fire antennas positioned on the first planar surface of the PCB and each being spaced apart by a first gap;

    a second plurality of receiver end-fire antennas positioned on the second planar surface of the PCB and each being spaced apart by a second gap that is greater than the first gap, the plurality of transmitter end-fire antennas, the first plurality of receiver end-fire antennas, and the second plurality of receiver end-fire antennas each having a transmission end that is oriented in a single direction;

    a first radio frequency integrated circuit (RFIC) positioned on the first planar surface of the PCB, coupled to the plurality of transmitter end-fire antennas and the first plurality of receiver end-fire antennas, and configured to control the plurality of transmitter end-fire antennas to transmit radar signals, to receive a first reflected signal of the radar signals from the first plurality of receiver end-fire antennas, and to determine whether an object is present within a first angle about the single direction based on the first reflected signal received from the first plurality of receiver end-fire antennas; and

    a second RFIC positioned on the second planar surface of the PCB, coupled to the second plurality of receiver end-fire antennas, and configured to receive a second reflected signal of the radar signals from the second plurality of receiver end-fire antennas and to determine whether the object is present within a second angle about the single direction based on the second reflected signal received from the second plurality of receiver end-fire antennas, the second angle being less than the first angle.

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