Patent ID: 9110162
Filing Date: 2015-08-18
Classification: G01S,H01Q

Abstract:
1. An antenna cover that covers a radar which comprises two antennas for receiving electromagnetic waves, which detects the distance to an obstacle and which detects the azimuth of the obstacle based on an phase difference between the electromagnetic waves received by the two antennas, comprising: a cover top that is flat, that faces the two antennas and that is spaced apart from the two antennas; and a thickness of the sidewall, that is a value obtained by dividing the physical thickness of the sidewall by a relative permittivity of the sidewall, increases toward a side where the two antennas are present, wherein the sidewall is structured such that a relative permittivity of the sidewall is uniform, and the physical thickness of the sidewall continuously increases toward the side where the antennas are present; wherein an inner face of the sidewall is at a right angle to the cover top, and an outer face of the sidewall is at a constant angle larger than 15 degrees but smaller than 45 degrees, to the inner face.