A 94 GHz 3D Image Radar Engine With 4TX/4RX Beamforming Scan Technique in 65 nm CMOS Technology

作者：Peng Pen Jui^*; Chen Pang Ning; Kao Chiro; Chen Yu Lun; Lee Jri

来源：IEEE Journal of Solid-State Circuits, 2015, 50(3): 656-668.

DOI：10.1109/JSSC.2014.2385758

• 94 GHz
• beamforming
• CMOS phased array
• frequency tripler
• imaging sensor
• millimeter-wave
• power splitter
• radar
• transceiver

This paper presents a fully-integrated 3D image radar engine utilizing beamforming for electrical scanning and precise ranging technique for distance measurement. Four transmitters and four receivers form a sensor frontend with phase shifters and power combiners adjusting the beam direction. A built-in 31.3 GHz clock source and a frequency tripler provide both RF carrier and counting clocks for the distance measurement. Flip-chip technique with low-temperature co-fired ceramic (LTCC) antenna design creates a miniature module as small as 6.5 x 4.4 x 0.8 cm(3). 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 x 2.1 mm(2). This prototype achieves +/- 28 degrees scanning range, 2-m maximum distance, and 1 mm depth resolution.

• 出版日期2015-3