Podcasts · The Hardware Podcast with Fexingo: Chips, Devices, and Electronics Engineering Conversations

How Chip-Scale Millimeter-Wave Radars Are Sensing the World

5 Aug 2026 · 11 min · S3 E146

Lucas and Luna explore the quiet revolution happening inside millimeter-wave radar chips. From automotive safety systems that see through fog and rain to smart-home devices that detect presence without cameras, these tiny sensors are becoming the eyes of the Internet of Things. The episode unpacks how frequency-modulated continuous wave radar works, how on-chip antennas shrink the entire system to a few millimeters, and why the 60-gigahertz band is such a sweet spot for consumer gear. Lucas digs into a specific example: a single-chip radar used in a popular smart thermostat to sense occupancy, explaining the signal processing tricks that turn raw reflections into useful data. Luna questions the trade-offs between radar and other sensing modalities, and they discuss the privacy advantages of radar over cameras. The conversation also touches on the cost curves that are making radar chips as cheap as accelerometers, and what that might mean for everything from elderly care to drone navigation. If you've ever wondered how your car avoids a pedestrian in the dark or why your lights know you're in the room, this episode gives you the concrete story.

#MillimeterWave #RadarChip #FMCW #60GHz #AutomotiveRadar #SmartHome #PresenceDetection #OnChipAntenna #IoT #SensorTechnology #PrivacyTech #Semiconductor #ChipDesign #TechInnovation #Engineering #Electronics #FexingoBusiness #BusinessPodcast

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