Abstract: Systems, methods, and devices for foreign object detection are disclosed. In one embodiment, a device for detecting the presence of a foreign object in an area being monitored may include an antenna including a receive path configured to detect a sample RF signal; a RF transceiver coupled to the antenna that generates and monitors modulation and demodulation of a RF field; a memory for storing a RF reference signal; and at least one computer processor configured to receive the sample RF signal from the RF transceiver and to determine a correlation between the sample RF signal and the RF reference signal, and to determine whether the correlation is indicative of a perturbation in the RF field.