Single-Antenna Wireless Power Receiver Without Side-Channel Radio
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Solution Overview
Problem
Conventional wireless power receivers require side channel communication for power delivery, which increases costs and complexity due to the need for additional radios, and may not be conveniently powered in all scenarios since they rely on access to an AC power outlet.
Innovation Solution
A simplified wireless power receiver client architecture that uses a single antenna for both beacon transmission and power reception, eliminating the need for dedicated side channel communication by embedding information in the beacon signal's duration and shifting frequencies to occupy new channels, thereby reducing component complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated side channel radio is used for power delivery communication, then power delivery coordination is achieved, but device complexity and cost increase
Solution Approach 1:
The patent combines the power delivery communication function with the existing beacon radio, eliminating the need for a separate side channel radio. The beacon radio is used to transmit both beacon signals and power delivery coordination information, merging two functions into a single communication channel.
Solution Approach 2:
The beacon radio is made multi-functional by enabling it to handle both traditional beacon operations and power delivery communication. This universal approach allows the same hardware component to serve multiple purposes, reducing overall system complexity while maintaining reliable power delivery coordination.
2Reliability
If a dedicated side channel radio is used for power delivery communication, then power delivery coordination is achieved, but manufacturing cost increases
Solution Approach 1:
The patent combines the power delivery communication function with the existing beacon radio, eliminating the need for a separate side channel radio. The beacon radio is used to transmit both beacon signals and power delivery coordination information, merging two functions into a single communication channel.
Solution Approach 2:
The beacon radio is made multi-functional by enabling it to handle both traditional beacon operations and power delivery communication. This universal approach allows the same hardware component to serve multiple purposes, reducing overall system complexity while maintaining reliable power delivery coordination.
3Ease of operation
If conventional rechargeable battery chargers are used, then battery recharging is achieved, but access to AC power outlet is required
Solution Approach 1:
The patent replaces the mechanical connection-based charging system (requiring physical plug insertion into AC outlets) with a wireless electromagnetic field-based power transfer system. This substitution allows power transfer without physical contact, enabling charging in locations without AC outlets.
Solution Approach 2:
The patent changes the operating parameters by using electromagnetic resonance at specific frequencies to enable wireless power transfer. By tuning the transmitter and receiver to matching resonant frequencies, efficient power transfer is achieved without requiring traditional AC outlet infrastructure.
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
This approach enables efficient wireless power delivery without side channel communication, lowering the cost and complexity of wireless power receiver clients and allowing power transmission in environments where AC power is not available, such as through electromagnetic radiation.
Implementation Method 1
Power can be transmitted wirelessly via electromagnetic radiation
Implementation Method 2
receive a power signal from the wireless power transmitter and provide the power signal to a battery
Data Source
AI summary
Systems, methods, and apparatuses for receiving wireless power using a wireless power receiver client architecture are disclosed. A simplified wireless power receiver apparatus includes an energy storage device and a radio frequency (RF) transceiver including an antenna. Energy harvester circuitry is coupled to the energy storage device and the RF transceiver, and control circuitry is coupled to the energy storage device, the RF transceiver, and the energy harvester. The control circuitry causes the RF transceiver to: establish a connection with a wireless power transmitter (WPT), transmit a beacon signal to the WPT, and receive a wireless power signal from the WPT. The control circuitry causes the energy harvester to deliver at least a portion of energy of the wireless power signal to the energy storage device for storage therein. In some embodiments, a single antenna is utilized both for transmitting the beacon signal and for receiving the wireless power signal.