77-GHz Automotive Radar Sensor System With Antenna Integrated Package

From active phased array antenna to antenna array microsystem in post-Moore era

“…封装天线技术继承和发扬了微带 天线、多芯片电路模块及瓦片式相控阵天线结构的集成概念, 将天线触角伸向集成电路、封装与新型 材料等领域 [11] . 相比于 AoC, AiP 将多种器件与电路集成在一个封装内, 完成片上天线难以实现的 复杂功能和特定的系统级封装, 有效避免了半导体衬底的低电阻率带来的增益损耗问题, 天线辐射效 率一般达到 80%以上 [12,13] . 封装形式有芯片直接贴装 (direct chip attach, DCA) [14] 、焊盘阵列封装 (land grid array, LGA) [15] 、四侧无引线扁平封装 (quad flat no lead, QFN) [16,17] 、嵌入式晶圆级球栅 阵列 (embedded wafer level ball grid array, eWLB) 封装 [18] , 以及基于低温共烧陶瓷 (low temperature co-fired ceramics, LTCC) 封装 [19] .…”

28 GHz circular polarized fan‐out antenna array with wide‐angle beam‐steering

“…Different fan‐out (FO) antennas and antenna arrays are presented in the literature at 28, 4–6 60, 7–13 77, 14–18 and above 100 GHz 19 . Most of these designs use either double molding layers, multiple re‐distribution layers (RDL), metallization on top mold, through mold VIAs, or airgap in the mold.…”

Design of a 77‐GHz radar frontend module

“…Seventy seven‐gigahertz automotive radar systems have emerged as a key technology that improves driving safety . The total cost of an automotive radar system should be attractive to end customers for it to be successful in the market.…”