Planar Transformer Isolator for High-Coupling Signal Isolation
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Solution Overview
Problem
Current isolators face challenges in achieving high coupling efficiency between transmit and receive circuits while maintaining insulation, which affects signal transmission quality.
Innovation Solution
The isolator module incorporates a transformer configuration with coils and magnets arranged in a specific planar structure, where the magnetic flux generated by the magnets enhances the coupling coefficient between the primary and secondary coils, enabling efficient signal transmission between insulated circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transformer configuration with coils and magnets is used to enhance coupling coefficient, then signal transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The patent combines the magnet and coil structures into an integrated transformer configuration where the magnet is positioned adjacent to the coil within the same housing. This merging of components achieves enhanced coupling coefficient and signal transmission efficiency while avoiding the need for separate, complex assembly of multiple independent parts.
Solution Approach 2:
The transformer configuration serves multiple functions: it provides electrical insulation between transmit and receive circuits, enhances magnetic coupling to improve signal transmission efficiency, and maintains a compact form factor. This multi-functionality resolves the contradiction by achieving high reliability without proportionally increasing device complexity.
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 achieves a high coupling coefficient, ensuring effective signal transmission between the transmit and receive circuits while maintaining insulation, thereby improving the isolator's performance.
Implementation Method 1
the magnetic flux generated by the magnets enhances the coupling coefficient between the primary and secondary coils
Implementation Method 2
a transformer configuration with coils and magnets arranged in a specific planar structure, where the magnetic flux generated by the magnets enhances the coupling coefficient between the primary and secondary coils, enabling efficient signal transmission between insulated circuits
Data Source
AI summary
According to one embodiment, an isolator includes a first coil, a second coil, a plate-shaped first magnet, and a first insulator. The second coil is aligned with the first coil along a first axis and faces the first coil. The first magnet is provided on a side of the second coil and faces the second coil, the side being opposite to a side where the first coil is located. The first magnet extends along a first plane intersecting the first axis. The first insulator seals the first coil, the second coil, and the first magnet.