Millimeter wave imaging in silicon: challenges when going beyond radar
Besides 5G and car radar, there are many other emerging technologies and applications that will strongly rely on millimeter waves (30 GHz – 300 GHz): dielectric sensing, spectroscopy, gas detection, contactless water content analysis… To bring these applications from the lab into the hands of consumers, integrated circuits operating at these high frequencies are needed. With the advancements in silicon process technologies, these once unattainable frequencies are now starting to be implemented in mass-production compatible CMOS and SiGe nodes. However, with the increase in frequency from RF to the millimeter wave spectrum comes a new way of looking at and designing these integrated circuits, especially in advanced silicon process nodes. In this talk, the challenges and possibilities of millimeter wave imaging ICs will be discussed, and it will be illustrated that silicon is a prime candidate to support the coming millimeter wave applications.