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.