Dual-Antenna Wireless Receiver Switching for Power and Data
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Solution Overview
Problem
Existing wireless systems face challenges in efficiently transferring both electrical power and data signals due to differing quality factor requirements for antennas, with legacy data antennas vulnerable to damage from power signals.
Innovation Solution
A wireless receiver system utilizing separate antennas for power and data signals, with intelligent switching based on signal type, allowing optimized quality factors for each, and strategic antenna placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single antenna is used for both data and power signals, then device complexity is reduced, but reliability deteriorates due to antenna damage from power signals
Solution Approach 1:
The patent divides the antenna system into separate data antenna and power antenna components. The data antenna is dedicated to receiving data signals while the power antenna is dedicated to receiving power signals, preventing damage to data antennas from high-power electromagnetic fields and enabling each antenna to be optimized for its specific function
Solution Approach 2:
The patent introduces a controller as an intermediary component that manages antenna switching based on signal type detection. The controller receives signals, determines whether they are data or power signals, and switches between antennas accordingly, protecting the data antenna from power signal damage
2Loss of energy
If antennas are optimized for high quality factor for power transfer, then power transfer efficiency is improved, but data transfer performance deteriorates due to bandwidth limitations
Solution Approach 1:
The patent applies different quality factor optimizations to different antennas based on their specific functions. The power antenna is designed with high quality factor for efficient power transfer, while the data antenna is designed with lower quality factor to provide broader bandwidth for high-speed data communication, allowing each component to have locally optimized characteristics
Solution Approach 2:
The patent creates a universal antenna system where separate antennas can be selectively activated based on signal type. The system can function as a data reception system or a power reception system by switching between antennas, providing multi-functionality without compromising the optimized performance of each antenna for its primary function
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 optimized data transfer and power transfer by using separate antennas with intelligent switching, ensuring durability and efficiency in wireless power and data communication.
Implementation Method 1
Such systems often use inductive wireless power transfer, which occurs when magnetic fields created by a transmitting element induce an electric field, and hence, an electric current, in a receiving element.
Data Source
AI summary
A wearable device includes (i) a first antenna that is operable to wirelessly receive power, (ii) a second antenna that is operable to wirelessly receive data, (iii) a battery, (iv) a power conditioning system that is connected between the first antenna and the battery, (v) a data communications system, and (vi) a switch that is operable to selectively couple or decouple the second antenna to or from the data communications system. The wearable device is configured to (i) detect a trigger event for decoupling the second antenna from the data communications system and, (ii) in response to detecting the trigger event, control the switch to decouple the second antenna from the data communications system.