A Compact CMOS 363 GHz Autodyne FMCW Radar with 57 GHz Bandwidth for Dental Imaging
Morteza Tavakoli Taba, S. M. Hossein Naghavi, Morteza Fayazi, Ali Sadeghi, Andreia Cathelin, Ehsan Afshari
Abstract
Millimeter-wave and terahertz circuits have numerous applications in radars, remote sensing, and next-generation $5 G$ network. Among the THz radars, frequency-modulated continuous-wave (FMCW) topology has drawn attention for imaging and security applications. Comparing the state-of-the-art FMCW radars [1] –[3], [6], most wideband radars are implemented with costly SiGe HBT transistors with a $f_{\max}$ of $\sim 380 \mathrm{GHz}$. Transistor scaling increases the $f_{\max}$ of lowcost CMOS technologies, which makes them suitable for highprecision imaging applications such as dental imaging that require wide bandwidth, compactness, and high operation frequency.