Leland Stanford Junior University

Nvologic Inc

Yuji Tanabe

Ada Shuk Yan Poon

Alexander Jueshyan Yeh

John Ho

Sanghoek Kim

Karl A Deisseroth

Scott Delp

Anatoly Anatolievich Yakovlev

Bob S Hu

Logan Grosenick

Stephanie Hsu

John S Y Ho

Shrivats Mohan Iyer

Emily Anne Ferenczi

Siu-Weng Simon Wong

Alex Yeh

Kate L Montgomery

Vivien Tsao

Andrew Ma

Ada Shuk Poon

Jihoon Jang

Implantable devices and/or sensors can be wirelessly powered by controlling and propagating electromagnetic waves in a patient's tissue. Such implantable devices/sensors can be implanted at target locations in a patient, to stimulate areas such as the heart, brain, spinal cord, or muscle tissue, and/or to sense biological, physiological, chemical attributes of the blood, tissue, and other patient parameters. The propagating electromagnetic waves can be generated with sub-wavelength structures configured to manipulate evanescent fields outside of tissue to generate the propagating waves inside the tissue. Methods of use are also described.

Wireless midfield systems and methods

Implantable devices and/or sensors can be wirelessly powered by controlling and propagating electromagnetic waves in a patient's tissue. Such implantable devices/sensors can be implanted at target locations in a patient, to stimulate areas such as the heart, brain, spinal cord, or muscle tissue, and/or to sense biological physiological, chemical attributes of the blood, tissue, and other patient parameters. The propagating electromagnetic waves can be generated with sub-wavelength structures configured to manipulate evanescent fields outside of tissue to generate the propagating waves inside the tissue. Methods of use are also described.

Method and apparatus for fabricating an energy transmitting device

A power transmitter is provided that can include a microwave cavity resonant at a desired operating frequency, a hexagonal mesh top to leak evanescent fields out of the cavity, and a plurality of orthogonal monopole feeds with 90 degrees phase differences creating circularly polarized waves. The power transmitter can be configured to transmit energy to a wireless device implanted in an animal passing through the evanescent fields. Implantable devices are also described which can receive wireless energy from the power transmitter and stimulate the animals (e.g., optogenetic or electrical stimulation).

Autofocus wireless power transfer to implantable devices in freely moving animals

A radio-frequency power receiving device has RF antennas connected to multiple controllable rectifying circuits to produce corresponding DC signals which are combined in a controllable switching network to produce a combined DC output. A control unit determines an amplitude control signal that controls each rectifying circuit and also determines switch control signals that control a switching network. The switching network controllably combines the direct-current signals to combine the multiple corresponding direct-current signals in series, in parallel, or in a combination of series and parallel.

Radio-frequency energy transfers or harvesting based on combining direct current signals from multiple antennas

Multi-element coupler for generation of electromagnetic energy

Growing community of inventors

Cupertino, CA, United States of America

Yuji Tanabe