Multi-Inductor Phase Control for Signal Transmission Reliability
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Solution Overview
Problem
The reduction in size of transmission inductors leads to a narrowed range of high magnetic flux density, making it difficult for reception inductors to receive signals accurately due to precise alignment requirements.
Innovation Solution
The use of multiple transmission inductors with their centers deviated from each other, combined with a phase difference control section that adjusts the phase difference between the inductors by less than 180°, allows for the deviation of magnetic flux distribution in a plane parallel to the substrate, ensuring signal reception even with relative position deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the transmission inductor is reduced in size, then the inductor can be miniaturized for integration, but the range of high magnetic flux density is narrowed and the area for signal reception becomes small
Solution Approach 1:
The transmission inductor is divided into multiple independent inductors (first transmission inductor and second transmission inductor) arranged in different wiring layers. Each inductor can be independently controlled with different phases, allowing the magnetic flux distributions to be combined and extended across a wider area, thus maintaining signal reception reliability even when individual inductors are small.
Solution Approach 2:
The patent utilizes vertical stacking of inductors in different wiring layers (three-dimensional arrangement) to expand the effective magnetic flux distribution area. By controlling phase differences between inductors in different layers, the system creates an extended magnetic flux pattern that covers a larger horizontal area, compensating for the reduced size of individual inductors.
2Ease of manufacture
If the transmission inductor is reduced in size, then manufacturing integration is improved, but the accuracy of relative position alignment between transmission and reception inductors becomes critical
Solution Approach 1:
By segmenting the transmission function across multiple inductors with different phases, the system creates a more robust magnetic flux distribution that is less sensitive to positional misalignment. The segmented approach allows each inductor to contribute to the overall signal, providing redundancy against alignment errors.
Solution Approach 2:
The patent changes the phase parameter of signals applied to different transmission inductors (0° for first inductor, 180° for second inductor). This phase parameter change creates a specific magnetic flux distribution pattern that expands the effective reception area and reduces sensitivity to positional alignment accuracy.
3Adaptability or versatility
If multiple inductors are used with phase difference control, then the magnetic flux distribution can be deviated in a plane parallel to the substrate, but the device complexity increases
Solution Approach 1:
The phase difference control section is designed to provide universal phase control capability across multiple transmission inductors. By implementing a standardized control mechanism that can handle phase differences between 0° and 180°, the system achieves adaptability to various positional deviations without requiring complex custom control circuits for each scenario.
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 configuration ensures reliable signal transmission by maintaining signal reception across varying relative positions of transmission and reception inductors, preventing transmission errors.
Implementation Method 1
a transmission inductor and a reception inductor are arranged opposite to each other and a signal is transmitted by the use of an inductive coupling of them
Implementation Method 2
the amplitude and/or phase of current of a signal inputted to the first inductor is controlled to vary magnetic flux passing through the second inductor
Data Source
AI summary
Multiple transmission inductors are formed over a substrate. A signal input channel is coupled to the multiple transmission inductors and a same transmission signal is inputted to the multiple transmission inductors. A phase difference control section is provided in the signal input channel and controls a phase difference of the signal between the transmission inductors by a unit smaller than 180°.