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公开(公告)号：US20250102656A1
公开(公告)日：2025-03-27
申请号：US18616575
申请日：2024-03-26
Applicant: Apple Inc.
Inventor： Babak Mamandipoor , Matthew A Mow , Tideya Kella
Abstract: An electronic device may include sensing circuitry that transmits a radar signal over one or more antennas. The sensing circuitry may receive a reflected radar signal over the antenna(s). Transmission of the radar signal may produce a leakage signal that is combined with the reflected radar signal. A mixer may generate a beat signal based on the radar signal, the reflected radar signal, and the leakage signal. A sensing receiver may perform motion-based external object detection to detect the presence of an animate external object that is very close to the device. The sensing receiver may perform the motion-based detection based on time fluctuations in the power and/or phase of the signal without removing or cancelling the leakage signal.
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