Abstract: A method and system for gastric stimulation and imaging for a user. The system having an array of millimeter-sized gastric seeds implanted in a stomach area of a user. Each gastric seed is ultrasonically powered and communicates using a transducer, and the transducer has a recorder to measure a bioelectrical activity in the stomach area of the user. A wearable unit (WU) is worn or carried by the user, and the WU wirelessly powers the gastric seeds. The WU wirelessly communicates with the gastric seeds, and the gastric seeds communicate a parameter to the WU based on the bioelectrical activity. Received pulses by the seeds can be used to localize the position of the seeds and guide the wireless power/data transmission in a self-image-guided manner. A processing unit (PU) wirelessly communicates with the WU, and the WU communicates the parameters from the gastric seeds to the PU.

Abstract: A method and system of neural stimulation and imaging of nervous system of a subject. The method includes the steps of providing an interface device operable to generate an ultrasonic beam for neuroniodulation and imaging of a targeted neural structure of a subject, implanting the interface device in the subject, and providing and disposing an external coil array over the targeted neural structure of the subject, wherein the external coil array is wirelessly powering and communicating with the interface device.

Abstract: A method and system for gastric stimulation and imaging for a user. The system having an array of millimeter-sized gastric seeds implanted in a stomach area of a user. Each gastric seed is ultrasonically powered and communicates using a transducer, and the transducer has a recorder to measure a bioelectrical activity in the stomach area of the user. A wearable unit (WU) is worn or carried by the user, and the WU wirelessly powers the gastric seeds. The WU wirelessly communicates with the gastric seeds, and the gastric seeds communicate a parameter to the WU based on the bioelectrical activity. Received pulses by the seeds can he used to localize the position of the seeds and guide the wireless power/data transmission in a self-image-guided manner. A processing unit (PU) wirelessly communicates with the WU, and the WU communicates the parameters from the gastric seeds to the PU.

Abstract: A current-based resonant power delivery (CRPD) device and method with multi-cycle switching that enables efficient inductive power transmission at large distances. The proposed CRPD switches the Rx LC-tank for several cycles to utilize it as a current source. Therefore, the voltage across the load (RL) can be significantly higher than the Rx LC-tank voltage. In CRPD, the energy may first be stored in the receiver (Rx) coil by shorting the Rx LC-tank for several power carrier cycles. At the peak of Rx coil current, the coil energy may then be transferred to load (RL) for a quarter of the power carrier cycle.

Abstract: A current-based resonant power delivery (CRPD) device and method with multi-cycle switching that enables efficient inductive power transmission at large distances. The proposed CRPD switches the Rx LC-tank for several cycles to utilize it as a current source. Therefore, the voltage across the load (RL) can be significantly higher than the Rx LC-tank voltage. In CRPD, the energy may first be stored in the receiver (Rx) coil by shorting the Rx LC-tank for several power carrier cycles. At the peak of Rx coil current, the coil energy may then be transferred to load (RL) for a quarter of the power carrier cycle.

Abstract: A method of wirelessly transmitting power or data is disclosed. The method may include the step of providing a transmitter including a driver coil and a first transmitter resonator coil. The driver coil may have a driver coil resonance frequency, and the first transmitter coil may have a first transmitter resonator coil resonance frequency. The method may further include the step of providing a receiver including a load coil having a load coil resonance frequency. Furthermore, the method may include tuning the first transmitter coil resonance frequency to be higher than both of the driver coil resonance frequency and the load coil resonance frequency.

Abstract: Certain implementations may include systems, methods, and apparatus for wirelessly transmitting data and power across inductive links using pulse delay modulation (PDM). According to an example implementation, a method is provided that includes generating a power carrier signal; generating a data waveform from a series of binary bits, the data waveform including a series of pulses in synchronization with the power carrier signal; transmitting, from one or more transmitting (Tx) coils of an inductive link, the power carrier signal and the data waveform; receiving, by one or more receiving (Rx) coils of the inductive link, an interference signal, the interference signal based at least in part on a superposition of the transmitted power carrier signal and the transmitted data waveform; determining zero crossings of the received interference signal; determining delays associated with the zero crossings; and determining the data packet based at least in part on the delays.

Abstract: A method of wirelessly transmitting power or data is disclosed. The method may include the step of providing a transmitter including a driver coil and a first transmitter resonator coil. The driver coil may have a driver coil resonance frequency, and the first transmitter coil may have a first transmitter resonator coil resonance frequency. The method may further include the step of providing a receiver including a load coil having a load coil resonance frequency. Furthermore, the method may include tuning the first transmitter coil resonance frequency to be higher than both of the driver coil resonance frequency and the load coil resonance frequency.

Abstract: Certain implementations may include systems, methods, and apparatus for wirelessly transmitting data and power across inductive links using pulse delay modulation (PDM). According to an example implementation, a method is provided that includes generating a power carrier signal; generating a data waveform from a series of binary bits, the data waveform including a series of pulses in synchronization with the power carrier signal; transmitting, from one or more transmitting (Tx) coils of an inductive link, the power carrier signal and the data waveform; receiving, by one or more receiving (Rx) coils of the inductive link, an interference signal, the interference signal based at least in part on a superposition of the transmitted power carrier signal and the transmitted data waveform; determining zero crossings of the received interference signal; determining delays associated with the zero crossings; and determining the data packet based at least in part on the delays.