Wound-Wire Inductor Coil Layout for High Turn Count Control
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Solution Overview
Problem
Existing wound-wire-type inductor components face challenges in achieving a high number of turns while maintaining a prescribed inductance value, which limits their performance as antenna coils in wireless communication circuits.
Innovation Solution
The design includes a core with a column-shaped shaft and support parts, with a wire wound around it, where the interval between turns is optimized to increase the number of turns wound around the shaft, thereby achieving a high inductance value suitable for antenna coils.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the wire is wound tightly around the shaft part, then the number of turns increases for a given inductance value, but the interval between adjacent turns becomes small which may cause manufacturing difficulties and increased complexity
Solution Approach 1:
The patent optimizes the interval between adjacent turns as a controllable parameter. By setting the interval to a specific range (0.5mm to 2.0mm), the patent achieves a balance between increasing the number of turns and maintaining manufacturability. This parameter optimization allows more turns to be wound within the available length while avoiding excessive tightness that would complicate the winding process.
Solution Approach 2:
The patent introduces flexibility in the winding structure by allowing the wire to be wound with controlled intervals rather than perfectly tight winding. This dynamic approach to winding density enables adaptation to different manufacturing conditions while still achieving the desired inductance value through increased turn count.
2Quantity of substance
If the number of turns is increased to achieve high induced voltage, then the communication range improves, but the inductance value may deviate from the prescribed value
Solution Approach 1:
The patent simultaneously optimizes multiple parameters including the interval between turns, wire diameter, and shaft part dimensions to achieve the prescribed inductance value. By controlling the interval parameter within a specific range, the patent enables increased turn count while maintaining precise inductance control through the relationship between these parameters.
Solution Approach 2:
The patent establishes a design methodology where the interval between turns is determined based on the desired inductance value and number of turns. This creates a feedback mechanism where the winding parameters are adjusted to achieve both high turn count and precise inductance specification, ensuring the inductor meets performance requirements.
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 allows for a higher induced voltage and improved performance as an antenna coil by increasing the number of turns while maintaining a prescribed inductance value, thus enhancing the communication range and reducing losses.
Implementation Method 1
an electrical signal generated in the wound-wire-type inductor component in response to magnetic flux incident on the wound-wire-type inductor component from the outside
Data Source
AI summary
A wound-wire-type inductor component includes a core including a column-shaped shaft part that extends in a first direction, and a first support part and a second support part that are respectively provided at a first end portion and a second end portion of the shaft part; a first terminal electrode and a second terminal electrode that are respectively provided on the first support part and the second support part; and a wire including a wound wire part that is wound around the shaft part and a first end and a second end that are respectively connected to the first terminal electrode and the second terminal electrode. The interval between adjacent turns of the wound wire part in the first direction is set so that the number of turns wound around the shaft part is high with respect to a prescribed inductance value.