# US 2021/0278901 A1 · Wireless power and data transmission system for wearable and implantable devices

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- Number: US 2021/0278901 A1
- Document ID: US20210278901A1
- Status: Published application
- Kind: A1
- Application number: 17/322,162
- Filed: 2021-05-17
- Published: 2021-09-09
- Earliest claimed: 2015-10-07
- Assignees: The Governing Council of the University of Toronto
- Applicants: The Governing Council of the University of Toronto
- Inventors: Nima SOLTANI; Roman GENOV
- Web page: https://patentgrep.com/patent/US20210278901A1

## CPC

- H02J 50/12: of the resonant type
- A61N 1/36132: {using patient feedback}
- A61N 1/37223: {Circuits for electromagnetic coupling}
- A61N 1/3787: {from an external energy source}
- G01S 13/0209: {Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband}
- G06F 3/015: {Input arrangements based on nervous system activity detection, e.g. brain waves [EEG] detection, electromyograms [EMG] detection, electrodermal response detection}
- H02J 50/10: using inductive coupling
- H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
- H04B 5/266: {One coil at each side, e.g. with primary and secondary coils}
- H04B 5/45: Transponders
- H04B 5/70: specially adapted for specific purposes
- H04B 5/73: for taking measurements, e.g. using sensing coils
- H04B 5/79: for data transfer in combination with power transfer
- H02J 2105/46: Medical devices, medical implants or life supporting devices
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H04B: TRANSMISSION

## Abstract

In one aspect, an electronic device for continuous and simultaneous powering and data transfer is provided, the electronic device comprising: an inductive power receiver operable to generate a power signal from a sensed magnetic field, the power signal; an LC tank and diode pair electrically coupled to the power receiver and operable to obtain the power signal, the LC tank and diode pair cooperating to generate a corresponding clipped signal thereof; and an antenna comprising a high-pass filter, the antenna electrically coupled to the diode pair and operable to emit a pulse-train by high-pass filtering the clipped signal.

## Claims

### Claim 1

An electronic device for continuous and simultaneous powering and data transfer, the electronic device comprising:
a. an inductive power receiver comprising a resonator having a coil for receiving an externally induced magnetic field and correspondingly generating a resonating current;
b. a rectifier electrically coupled to the inductive power receiver to convert and store a portion of the resonating current to a DC voltage;
c. a limiter electrically coupled to the rectifier for limiting the DC voltage to a threshold voltage to produce a clipped signal thereof; and
d. an antenna electrically coupled to the limiter and configured to emit a pulse-train corresponding to the clipped signal.

### Claim 2 (depends on 1)

The electronic device of claim 1, wherein the resonating current resonates at the frequency of the externally induced magnetic field.

### Claim 3 (depends on 1)

The electronic device of claim 1, wherein the rectifier comprises an LC tank and the limiter comprises a diode pair, the LC tank and diode pair cooperating to generate the clipped signal.

### Claim 4 (depends on 1)

The electronic device of claim 1, wherein the antenna comprises a high-pass filter to filter the clipped signal.

### Claim 5 (depends on 1)

The electronic device of claim 1, wherein the pulse train is usable for data transmission.