PROBLEM TO BE SOLVED: To widen an angle of a range detected by a millimeter-wave radar device.SOLUTION: A radio wave transmissive cover 10 is disposed in the radio wave path of a millimeter-wave radar device 90. A plate thickness d of the cover 10 is set to a reference plate thickness dP0 of an integral multiple of 1/2 of the wavelength λ of the radio wave at its reference position at which an incident angle θ of the radio wave from the millimeter-wave radar device 90 is 0 degree. The plate thickness d of the cover at a position around the reference position is gradually greater than the reference plate thickness dP0 as the position around the reference position is farther from the reference position.SELECTED DRAWING: Figure 1
【課題】ミリ波レーダ装置による検知範囲の広角化を図ることができる。【解決手段】電波透過性カバー10は、ミリ波レーダ装置90の電波の経路内に配置される。カバー10の板厚dは、ミリ波レーダ装置90からの電波の入射角θが0度となる基準位置において該電波の波長λの1/2の整数倍の基準板厚dP0に設定されるとともに、基準位置の周辺の位置においては基準位置から離間するほど基準板厚dP0よりも厚くなるように徐変されている。【選択図】図1
RADIO WAVE TRANSMISSIVE COVER AND METHOD FOR SETTING PLATE THICKNESS OF RADIO WAVE TRANSMISSIVE COVER
電波透過性カバー及び電波透過性カバーの板厚設定方法
2018-05-10
Patent
Elektronische Ressource
Japanisch
Electromagnetic wave transmissive cover and method for manufacturing the same
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