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A 94 GHz 3D Image Radar Engine With 4TX/4RX Beamforming Scan Technique in 65 nm CMOS Technology Pen-Jui Peng, Pang-Ning Chen, Chiro Kao, Y u-Lun Chen
一款基于65nm CMOS技术的94GHz 3D成像雷达引擎，采用4TX4RX波束成形扫描技术和精确测距技术。
65nm CMOS, 1.2V, 960mW功耗, 3.6x2.1mm芯片面积, 2m最大测距, 1mm深度分辨率
3D成像雷达波束成形CMOS毫米波精确测距
▸4TX4RX波束成形扫描技术
▸内置31.3GHz时钟源和频率三倍器
▸低温共烧陶瓷（LTCC）天线设计的倒装芯片技术
Abstract
This paper presents a fully-integrated 3D image radar engine utilizing beamforming for electrical s canning and precise ranging technique for di stance measurement. Four trans- mitters and four receivers form a sensor frontend with phase shifters and power combiners adjusting the beam di rection. A built-in 31.3 GHz clock source and a frequency tripler provide both RF carrier and counting cl ocks for the distance measure- ment. Flip-chip technique with low-temperatu re co-fired ceramic (LTCC) antenna design creates a miniature module as small as 6.5 4.4 0.8 cm . Designed and fabricated in 65 nm CMOS technology, the transceiver array chip dissipates 960 mW from a 1.2-V supply and occupies chip area of 3.6 2.1 mm .T h i s prototype achieves scanning range, 2-m maximum distance, and 1 mm depth resolution.