Electronic devices having millimeter wave ranging capabilities

This invention describes a wristwatch that can measure distances to nearby objects using very high-frequency radio waves. It does this with a special antenna system, called a phased array, built into the watch's display or housing. The watch sends out these millimeter waves and listens for reflections to calculate how far away something is.

Why it matters: Since 2020, the miniaturization and cost reduction of millimeter wave components and phased array technology, partly driven by 5G advancements, could make this compact radar system more viable for a wristwatch.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedMillimeter wave phased array, custom antenna integration

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