雷达罩材料对毫米波透波性能的影响

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中图分类号：U465 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250264

TheInfluence of Radar Cover Material on Millimeter Wave Transmission Performance

Huang Junlin，Wu Xu，Guo Junchao，Li Yichen，Liu Chunhua （Dongfeng Motor Corporation Research&Development Institute，Wuhan ）

Abstract：Toinvestigate theefect ofautomotivemillimeter-waveradarradomematenvlsonmillimeter-wave transmitanceperformance，thispaper inelaborates the intrinsicrelationship between material transmission lossand electromagnetic parameters，and tests the electromagnetic parameters and transmision loss of several commonly used radarcover plastics，aswellasthetransmission loss of different Polypropylene （PP）material thicknesses.Theresults indicatethatlowpolaritymaterials generallyhavelowerdielectricconstantsanddielectriclosses.Thetransmissionloss of millimeter waves in bumpers exhibitsaperiodic relationship with wall thickness，and the transmission lossis minimalwhen thethicknessisaninteger multipleofhalfawavelength.Furthermore，throughanalysisof the transmission lossof materialswithdiferent paintcoatingsand metal coatings，itis foundthataluminum powder and pearlescent powder in paintcomponents have a significant negativeimpactonthetransmision performance of millimeter waves.Physical Vapor Deposition （PVD） aluminum plating is not suitable for Adaptive Cruise Control（ACC） vehiclelogos，whileappropriatefilmthicknessPVDindiumplating has minimal interferencewithmillimeterwavesand meets the transmission requirements.

Keywords：Millimeterwave，Radar，Transmissionloss

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雷达因其成本较低、技术相对成熟，且是唯一能够实现全天候、全天时工作的传感器，已成为汽车先进驾驶辅助系统（AdvancedDriver Assistance Systems，ADAS）和自动驾驶汽车不可或缺的核心传感器之一[。（剩余4891字）