A. Arbabian, Shinwon Kang, Steven Callender, Jun-Chau Chien, B. Afshar, A. Niknejad
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A 94GHz mm-wave to baseband pulsed-radar for imaging and gesture recognition
An integrated phase-coherent and pixel-scalable pulsed-radar transceiver with on-chip tapered loop antennas generates programmable pulses down to 36ps using an integrated 94GHz carrier, frequency synthesized and locked to an external reference. A DLL controls the TX pulse position with 2.28ps resolution, which allows the chip to function as a unit element in a timed-array. The receiver also features a >;1.5THz GBW DA as the front-end amplifier, quadrature mixers, and a 26GHz quadrature baseband. Phase coherency allows for ~375μm single-target position resolution by interferometry.
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