Here, we demonstrate the first, fully hybrid-integrated, microcomb-based microwave oscillator at 10.7 GHz. The chip device, powered by a customized microelectronic circuit, leverages hybrid integration of a high-power DFB laser, a silicon nitride microresonator of a quality factor exceeding 25 × 10^6, and a high-speed photodetector chip of 110 GHz bandwidth (3 dB) and 0.3 A/W responsivity.
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