3D Inductor Structure for High Integration and Low Interference
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Solution Overview
Problem
Conventional inductor structures are limited in integration level, as they typically consist of a single inductor within the entire structure space, necessitating research for improved integration to enhance performance and efficiency in wireless communications applications.
Innovation Solution
A three-dimensional inductor structure is developed by integrating three independent inductors or two inductors with non-parallel magnetic fields within the same space using multiple insulation layers and spiral conductive coils, allowing for increased coil density and reduced space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single inductor structure is used in the entire structure space, then the device complexity is low, but the integration level is limited and space utilization is poor
Solution Approach 1:
The patent divides the structure space into multiple independent regions, each containing a separate inductor structure. This segmentation allows multiple inductors to coexist in the same overall structure, improving integration level while maintaining manageable complexity through modular design
Solution Approach 2:
The patent utilizes three-dimensional space by arranging inductors at different heights and orientations. By transitioning from two-dimensional planar arrangement to three-dimensional spatial arrangement, the integration level is significantly improved without proportionally increasing structural complexity
2Adaptability or versatility
If multiple independent inductors are integrated into the same space, then the integration level and space utilization improve, but the risk of magnetic field interference between inductors increases
Solution Approach 1:
The patent assigns different spatial characteristics to different inductor regions, including varying orientations and positional arrangements. This local differentiation optimizes each inductor's magnetic field distribution while minimizing overlap and interference with adjacent inductors
Solution Approach 2:
By arranging inductors in three-dimensional space with different orientations and at different heights, the patent separates magnetic field paths spatially. This dimensional separation reduces magnetic coupling and interference between adjacent inductors while maintaining high integration
3Ease of manufacture
If conventional two-level spiral inductor design is used, then the manufacturing process is simple, but the coil density and space efficiency are limited
Solution Approach 1:
The patent extends the conventional two-level spiral design into three dimensions by adding vertical separation and multiple orientations. This dimensional extension significantly increases coil density and space efficiency while maintaining compatibility with standard semiconductor manufacturing processes
Solution Approach 2:
The patent arranges multiple spiral inductor structures in a nested or interlaced configuration within the three-dimensional space. This nesting approach maximizes the use of available space, increasing coil density without requiring complex manufacturing processes
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 achieves a higher integration level, enabling efficient use of space and minimizing interference between inductors, thereby enhancing the overall performance and efficiency in wireless communications applications.
Implementation Method 1
a first spiral conductive coil disposed in the insulation layer to form an inductor generating a magnetic field in a first direction; a second spiral conductive coil disposed in the insulation layer to form an inductor generating a magnetic field in a second direction
Data Source
AI summary
An inductor structure comprising a substrate; a plurality of insulation layers on the substrate; a first spiral electric conductive coil positioned in the insulation layers to form an inductor having a first direction of magnetic field; a second spiral electric conductive coil positioned in the insulation layers to form an inductor having a second direction of magnetic field, in which, the two or more inductors are independently positioned in a same 3-D space and have a good integration.