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引用次数: 3
摘要
提出了一种新型的基于低温共烧陶瓷(LTCC)的汽车雷达SoP。首次将相对低介电常数的LTCC衬底和高介电常数的LTCC衬底结合在一起，以提高模块的整体增益。该上覆层可以在恶劣的汽车环境中为集成电路(IC)提供额外的保护。LTCC衬底中的定制腔可以容纳集成电路，该集成电路馈送孔径耦合贴片天线阵列。该空腔嵌入在地平面下方，作为集成电路免受天线辐射的屏蔽。据估计，微型SoP模块(尺寸为2.0 cm × 2.0 cm × 0.22 cm)的传输射频功率仅为10 dBm，可以通信高达67 m。该设计的紧凑性、鲁棒性、传输功率和由此产生的通信范围非常适合通用中距离雷达(UMRR)应用。
Gain-enhanced LTCC system-on-package for automotive UMRR applications
A novel Low Temperature Co-fired Ceramic (LTCC) based SoP for automotive radar applications is presented. For the first time a combination of a relatively low dielectric constant LTCC substrate and a high dielectric constant LTCC superstrate has been incorporated to enhance the overall gain of the module. The superstrate can provide additional protection to the integrated circuits (IC) in the harsh automotive environment. A custom cavity in the LTCC substrate can accommodate the IC, which feeds an aperture coupled patch antenna array. The cavity is embedded below the ground plane that acts as a shield for the IC from antenna radiation. It is estimated that with mere 10 dBm of transmitted RF power the miniature SoP module (sized 2.0 cm × 2.0 cm × 0.22 cm) can communicate up to 67 m. The design's compactness, robustness, transmission power and resultant communication range are highly suitable for Universal Medium Range Radar (UMRR) applications.
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