Millimeter wave radar sensor products have become a key part of advanced driving assistance systems(ADAS).This article introduces a printed circuit board(PCB)for millimeter wave radar,which uses bismaleimide triazine(BT)materials to make 10 layers of any layer interconnecting high density interconnector(HDI)boards.Its performance is improved and tested to meet customer and market needs.The results show that the problems of insufficient heat resistance and easy delamination in the surface copper free area design of this type of BT material have been effectively solved through the application of baking plates and buffer materials,optimization of copper laying methods,and other measures,ensuring the manufacturing quality and performance stability of 4D vehicle mounted millimeter wave radar products,and meeting the needs of customers and the market.
维普
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