Inductor with Width-Reoriented Coil for High Inductance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inductors for high-frequency applications face challenges in increasing inductance value and Q value while minimizing size, as increasing the number of coil conductor layers leads to a larger multilayer body and reduced Q value.
Innovation Solution
The inductor design features a substantially rectangular parallelepiped component body with embedded L-shaped outer electrodes and spirally formed coil conductor layers, where via pads are strategically placed to increase the outside diameter of the coil, allowing for enhanced inductance and Q value without increasing the mounting area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of coil conductor layers is increased to increase the inductance value, then the inductance value increases, but the multilayer body increases in size in the lamination direction and the mounting area increases
Solution Approach 1:
The patent changes the orientation of the coil conductor layers from the lamination direction (thickness direction) to the width direction, which is parallel to the mounting surface. This dimensional reorientation allows the coil to extend in the width direction rather than increasing the thickness direction, thereby increasing inductance without increasing the mounting area footprint.
Solution Approach 2:
The patent employs an asymmetric component body shape where the width is made larger than the thickness, creating an optimized geometry for the reoriented coil structure. This asymmetric design allows the coil conductor layers to be arranged in the width direction with sufficient space, enabling increased inductance while maintaining a compact mounting area.
2Quantity of substance
If the number of turns of the coil conductor layers is increased to increase the inductance value, then the inductance value increases, but the inner region of each coil conductor layer becomes small and the Q value decreases
Solution Approach 1:
By reorienting the coil conductor layers from the thickness direction to the width direction, the patent creates sufficient space for the coil windings to maintain adequate inner regions. The increased width dimension provides room for the coil to have both multiple turns and sufficient inner diameter, thereby maintaining Q value while increasing inductance.
3Volume of moving object
If the width of the component body is made less than or equal to the height to reduce size, then the overall size is reduced, but the area of principal surfaces of insulator layers is reduced, limiting the coil diameter and length
Solution Approach 1:
The patent employs an asymmetric component body design where the width is made larger than the thickness (height), creating an optimized geometry that provides sufficient area for the coil conductor layers in the width direction while maintaining a compact overall size. This asymmetric shape allows the coil to achieve adequate diameter and length for high inductance without increasing the mounting area footprint.
Data Source
AI summary
An inductor includes a coil that is provided in a component body. A first end of the coil is connected to a first outer electrode, and a second end of the coil is connected to a second outer electrode. The coil includes a plurality of coil conductor layers that are provided in a width direction. Each coil conductor layer is substantially spirally formed with the number of turns being greater than or equal to about one turn. The height of the component body is greater than the width of the component body.