Nested Ring Inductor Layout for Low-Coupling Adjustable Inductance
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Solution Overview
Problem
Existing inductors, such as spiral and 8-shaped types, face issues with mutual inductance and coupling, which affect their performance and occupy large areas, limiting their use range.
Innovation Solution
The inductor device comprises multiple ring-type structures arranged in a specific configuration, allowing for adjustable inductance values and reducing coupling interference through controlled connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spiral-type inductor is used, then Q value is high, but mutual inductance and coupling occur between coils
Solution Approach 1:
The patent uses the coupling effect that was previously harmful to generate a compensating inductance. By intentionally designing coupled coils, the harmful mutual inductance is converted into a useful component that compensates for losses and maintains high Q value while providing the desired inductance characteristics.
2Adaptability or versatility
If 8-shaped inductor is used, then coupling and mutual inductance occur in coupling magnetic field, but area occupied is large
Solution Approach 1:
The patent places one coil inside or alongside another coil, creating a nested configuration. This allows the inductor to achieve the desired inductance and coupling characteristics while occupying minimal area, as the coils are arranged in a space-efficient nested manner rather than requiring separate large areas.
3Adaptability or versatility
If multiple ring-type structures are coupled, then inductance values are adjustable, but device complexity increases
Solution Approach 1:
The patent designs a universal inductor structure where multiple ring-type coils can be coupled in different configurations to achieve various inductance values. The same basic structure serves multiple functions by changing the coupling arrangement, eliminating the need for completely different designs for different inductance requirements and thus reducing overall 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
The device provides expandable inductance values and minimizes coupling effects, enhancing its application range and performance.
Implementation Method 1
inductor device includes a first ring-type structure (110), a second ring-type structure (130) and a third ring-type structure (150)... the second ring-type structure (130) is coupled to the first ring-type structure (110) and formed an 8-shaped loop with the first ring-type structure (110)
Data Source
AI summary
An inductor device including a first ring-type structure, a second ring-type structure, and a third ring-type structure is disclosed. The second ring-type structure is coupled to the first ring-type structure and formed an 8-shaped loop with the first ring-type structure. The third ring-type structure is coupled to the second ring-type structure. The first ring-type structure and the second ring-type structure are located at an area surrounded by the third ring-type structure.