RF Receiver Signal Segmentation for Simultaneous Energy and Data Transfer
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Solution Overview
Problem
Current signal processing methods for receivers in wireless communication systems are inefficient for simultaneous energy charging and data transfer using RF signals, leading to low energy transfer efficiency and reduced data decoding capabilities due to phase information loss during energy recharging.
Innovation Solution
A method and system where the receiver processes part of the RF signal for energy recharging and another part for data decoding, using amplitude and phase information to optimize energy transfer and data decoding rates, with signal processing rates determined based on the amount of recharged energy, and sharing these rates with the transmitter to enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the whole RF signal is used for energy charging, then energy transfer efficiency is improved, but data decoding capability deteriorates due to phase information loss
Solution Approach 1:
The received RF signal is divided into two separate paths: one path directs the signal to a rectifier for energy harvesting, while the other path directs the signal to a data decoding unit for data recovery. This segmentation allows the system to simultaneously perform both energy charging and data decoding without the phase information loss that would occur if the entire signal passed through the rectifier.
2Productivity
If signal processing is performed for data decoding using conventional methods, then data transfer capability is maintained, but energy transfer efficiency deteriorates
Solution Approach 1:
The system segments the signal processing function by creating separate processing paths: one for energy harvesting and one for data decoding. The data decoding unit receives a copy of the original RF signal and processes it independently, preserving data transfer capability while allowing the other path to optimize for energy efficiency.
Solution Approach 2:
The received RF signal serves dual purposes: it is simultaneously used for both energy harvesting and data decoding. By making the signal processing system multi-functional with separate processing paths, the system can extract both energy and information from the same transmitted signal, improving overall system efficiency.
3Length of stationary object
If magnetic charging is used to broaden charging distance, then charging distance is improved, but data rate deteriorates
Solution Approach 1:
The system replaces magnetic charging with RF-based wireless charging, substituting one physical mechanism for another. RF signals can propagate over longer distances compared to magnetic charging, enabling broader charging distance while the separate data decoding path maintains data rate performance.
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 increases energy transfer efficiency and data rate while minimizing phase information loss, allowing for simultaneous energy recharging and data decoding with reduced energy consumption and improved data decoding performance.
Implementation Method 1
A signal received during the time ρ from the transmitter, that is, an RF signal may be rectified by passing through a rectifier 120. As such, as the signal passes through the rectifier 120, energy may be harvested.
Data Source
AI summary
A receiver for transferring energy and data together and a signal processing method in the receiver are provided. The method includes decoding data included in a received signal using part of power received for charging a charging unit of the receiver with energy with respect to the signal for energy charging and data decoding, the signal being received from a transmitter.