RF Wireless Power Integrated Circuit for Portable Device Charging

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Solution Overview

Problem

Conventional rechargeable battery chargers require access to an alternating current (AC) power outlet, which may not always be available or convenient, limiting the portability of devices powered by batteries.

Innovation Solution

A wireless power delivery system that uses RF-based wireless power transmission, where a charger detects the location of a receiver on a client device and transmits power using an integrated circuit that computes the location and adjusts the phase of the power signal to ensure coherent delivery, allowing power to be sent without the need for a direct electrical connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional rechargeable battery chargers are used, then batteries can be recharged, but access to an AC power outlet is required which limits portability

Engineering Contradiction:

ImproveportabilityVSAvoidavailability of power source

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent replaces the mechanical connection system (physical plug and AC outlet interface) with an electromagnetic field-based wireless power transmission system using RF signals and rectennas, eliminating the need for physical connection to AC power outlets and enabling portable charging anywhere in the coverage area

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The wireless power transmission system can operate in various environments and locations without requiring specific infrastructure like AC outlets, making the charging capability universal and adaptable to different situations including mobile use, travel, and areas without electrical infrastructure

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables wireless power transmission to devices without the need for an AC power source, enhancing the portability and convenience of battery-powered devices by allowing power delivery in various locations and environments.

Implementation Method 1

transmit radio frequency (RF)-based wireless power to the receiver

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

receiver that includes an integrated circuit for receiving wireless power

Methodology Applied

Scientific EffectElectromagnetic energy reception and rectification: Electromagnetic Induction

Data Source

PatentUS11621588B2Integrated circuits for transmitting wireless power, receiving wireless power, and/or communicating wirelessly

Publication Date: 2023.04.04 OSSIA INC

AI summary

The disclosed technology relates to wireless communication and wireless power transmission. In some implementations, the disclosed technology is directed to an integrated circuit having a transmitter that transmits radio frequency (RF) based wireless power and receives signals for detecting the location of a client device. The disclosed technology is also directed to an integrated circuit for a client device that receives power from the transmitter and transmits beacon signals, which the transmitter can use to locate the client device.