| 摘要 |
PROBLEM TO BE SOLVED: To provide a radar device that can reduce a wrong detection due to an unnecessary electromagnetic wave included in a transmission wave transmitted from a transmission antenna.SOLUTION: A radar device comprises: a transmission antenna 22 that has a plurality of antenna elements 22a, transmits an electromagnetic wave toward a direction of a detection object from the plurality of antenna elements 22a; a reception antenna 23 that receives a reflection wave in which the electromagnetic wave transmitted from the transmission antenna 22 is reflected upon an object; and a cover 11 that protect the transmission antenna 22 and the reception antenna 23. In a surface of the cover 11 intersecting an unnecessary electromagnetic wave to be transmitted in a direction different from the direction of the detection object from the transmission antenna 22, a convexity part is formed that causes the unnecessary electromagnetic wave to generate diffraction, and thereby a wrong detection due to the unnecessary electromagnetic wave can be reduced. |
