In a first radio frequency (RF) device, circuits determine a non-line-of-sight (NLOS) radio path, and select a first plurality of reflector devices associated with the NLOS radio path from a second plurality of reflector devices. The first plurality of reflector devices, are selected based on a first set of criteria, includes an active reflector device and a passive reflector device, and are controlled to transmit a plurality of RF signals to a second RF device based on a second set of criteria. The second RF device is associated with electronic devices. The first RF signal interferes with a second RF signal of the RF signals. A first type of signal associated with the plurality of RF signals is converted to a second type of signal at the second RF device, and the second type of signal is transmitted by the second RF device to the one or more electronic devices.

In a first radio frequency (RF) device, circuits determine a non-line-of-sight (NLOS) radio path, and select a first plurality of reflector devices associated with the NLOS radio path from a second plurality of reflector devices. The first plurality of reflector devices, are selected based on a first set of criteria, includes an active reflector device and a passive reflector device, and are controlled to transmit a plurality of RF signals to a second RF device based on a second set of criteria. The second RF device is associated with electronic devices. The first RF signal interferes with a second RF signal of the RF signals. A first type of signal associated with the plurality of RF signals is converted to a second type of signal at the second RF device, and the second type of signal is transmitted by the second RF device to the one or more electronic devices.

An apparatus is provided in which electromagnetic field components generated by a transmitting coil is induced to other transmitting coils based on plurality of transmitting coils being driven for multiple wireless charging, for example, wirelessly charging two or more receivers to prevent degradation in performance of detecting a receiving coil and a foreign object during multiple wireless charging. According to the present disclosure, the receiving coil and foreign object detecting apparatus in multiple charging conditions using the plurality of transmitting coils includes an induced signal processor. The induced signal processor can control an amount of voltage and an operation frequency corresponding to the wireless charging coil and can detect a peak and can include a filter to thereby prevent interference of a signal induced from other neighboring transmitting coils.

An antenna for wireless power transmission includes a source coil comprised of a first conductive wire, the source coil including a first outer turn and a first inner turn, the source coil configured to connect to one or more electronic components for wireless power transfer. The antenna further includes an internal repeater coil comprised of a second conductive wire, the internal repeater coil including a second outer turn and a second inner turn, the internal repeater coil configured to have a repeater current induced in the second outer turn and the second inner turn. The antenna further includes a repeater tuning system in electrical connection with a beginning of the second outer turn and an ending of the second inner turn, the repeater tuning system positioned inward of the second outer turn.

An antenna for a wireless power receiver system includes a receiver coil, the receiver coil configured to receive one or both of wireless power signals and repeated wireless power signals and provide the wireless power signals to a rectifier of the wireless power receiver system. The antenna further includes an internal repeater coil, the internal repeater coil configured to receive the wireless power signals and transmit the wireless power signals to the receiver coil as the repeated wireless power signals.

Embodiments of the present disclosure generally relate to systems and methods for providing access to information associated with electronically tagged goods. In one implementation, the system may include at least one processor configured to store tag IDs of a plurality of tags; and receive a pairing between a particular tag ID and a product ID. The at least one processor may also be configured to receive a pairing between the particular tag ID and an authorized entity associated with the particular tag ID; and receive, from a requester, a query including an encrypted tag ID of the particular tag. The at least one processor may also be configured to decrypt the encrypted tag ID; determine if the requester is the authorized entity; fulfill the query, if the requester is the at least one authorized entity; and deny the query if the requester is not the at least one authorized entity.

Embodiments of the present disclosure generally relate to a wireless identification fraud avoidance system and methods for use thereof. In one implementation, the system may include at least one transmitter configured to transmit a first signal to a plurality of identification tags and to cause the identification tags to transmit a second signal. The system may also include a first, proximate receiver configured to receive the second signal from the identification tags. The system may also include a second, more distant receiver configured to receive a third signal from a tag outside a transmission range of the at least one transmitter. The system may also include at least one processor configured to generate a potential fraud alert when the second receiver receives the third signal.

Embodiments of the present disclosure generally relate to a wireless identification tag with varying ID transmission timing, and system and methods for use thereof. In one implementation, the tag may include at least one transmitter and an energy storage component electrically connected to the at least one transmitter. The energy storage component may be configured to collect and store ambient energy and to power transmission of the at least one transmitter. The tag may also include at least one circuit. The at least one circuit may be configured to cause the at least one transmitter to transmit a sequence of identification signals in non-uniform intervals such that times between identification signal transmissions of three consecutive transmissions vary.

Embodiments of the present disclosure generally relate to a wireless identification tag triggerable by an EAS gate while remaining invisible to the EAS gate, and system and methods for use thereof. In one implementation, the tag may include an antenna tuned to receive energy transmitted in at least one EAS gate frequency range and configured to be non-detectable by the EAS gate. The tag may also include a transmitter configured to send an identification signal and an energy storage component for powering the transmitter. The tag may also include a circuit connected to the antenna. The circuit may be configured to detect energy transmitted from the EAS gate in at least one of the EAS gate frequency ranges, and to cause the transmitter to transmit, to a receiver other than the EAS gate, the identification signal in a frequency outside the EAS gate frequency ranges.

Embodiments of the present disclosure generally relate to a wireless identification tag with a response time that varies as a function of incoming signal frequency and system and methods for use thereof. In one implementation, the tag may include at least one antenna tuned to receive energy transmitted at a first frequency and at a second frequency. The tag may also include at least one transmitter. The tag may also include at least one circuit configured to detect whether energy is received in the first frequency or the second frequency, and to cause the at least one transmitter to transmit an immediate response when the second frequency is detected and to transmit a delayed response when the first frequency is detected.