SYSTEMS AND METHODS FOR OBJECT DETECTION BY RADIO FREQUENCY SYSTEMS
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United States of America Patent
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Issued Date -
Jan 11, 2024
app pub date -
Sep 22, 2023
filing date -
Mar 22, 2019
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Abstract
Systems, methods, and devices are provided for detecting the presence of an object near an electronic device. A radio frequency (RF) system of an electronic device may include a first circuit that includes one or more transmission paths for transmitting a reference signal external to the electronic device. The RF system may include a second circuit that includes one or more receiving paths for receiving a reflection signal based on the reference signal. The RF system may also include a processor that may instruct the RF system to perform a comparison between the reference signal and the reflection signal, determine whether the object is in proximity based at least in part on whether comparison results exceed a comparison threshold, and decrease power output by the RF system below the comparison threshold.
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