Open-Loop Noise Removal in Winding-Type Coil Components
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-performance electronic devices with increasing miniaturization and operating frequencies face challenges with high-frequency noise in coil components, which existing technologies have not adequately addressed.
Innovation Solution
A coil component design featuring a winding-type coil with a noise removal portion having an open-loop pattern and an insulating layer, coupled with external electrodes, effectively discharges high-frequency noise by forming capacitance with the coil portion, enhancing noise removal capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a winding-type coil is used in high-performance electronic devices, then the device performance and operating frequency increase, but high-frequency noise is generated
Solution Approach 1:
A noise removal portion is introduced as an intermediary element between the coil portion and the external environment. This noise removal portion includes a pattern portion with an open-loop configuration that acts as a mediator to redirect and discharge high-frequency noise through a dedicated path, preventing the noise from propagating to other circuit components while maintaining the coil's high-frequency operating capability
Solution Approach 2:
The coil component is segmented into functionally distinct portions: a coil portion for generating electromagnetic fields at high frequencies, a noise removal portion for capturing and discharging noise, and an insulating layer for electrical isolation. This segmentation allows each portion to perform its specific function optimally without interfering with the others, enabling the coil to operate at high frequencies while the noise removal portion handles the harmful noise separately
2Reliability
If the noise removal portion is spaced apart from the metal wire, then electrical insulation is maintained, but capacitance formation is reduced
Solution Approach 1:
The electrical parameters between the coil portion and noise removal portion are optimized by controlling the spacing distance and the dielectric properties of the insulating layer. The insulating layer thickness and material characteristics are specifically selected to achieve the desired capacitance value that enables effective noise filtering while maintaining adequate electrical insulation. This parameter optimization allows the system to operate in a regime where sufficient capacitance exists for noise removal without compromising insulation reliability
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 design significantly reduces high-frequency noise transmission, as demonstrated by improved signal transmission characteristics compared to comparative examples, effectively preventing unnecessary high-frequency noise in electronic devices.
Implementation Method 1
A coil component is disclosed, which comprises a winding-type coil, a body, a noise removal portion, an insulating layer, and external electrodes. The noise removal portion includes a pattern portion spaced apart from a metal wire of the winding-type coil in the body and having both end portions spaced apart from each other to have an open-loop, and a third lead-out portion connected to the pattern portion and exposed from the body. The insulating layer is disposed between the winding-type coil and the noise removal portion.
Data Source
AI summary
A coil component includes a winding-type coil including a coil portion and first and second lead-out portions respectively connected to the coil portion; a body in which the winding-type coil is disposed, the first and second lead-out portions of the winding-type coil exposed from the body; a noise removal portion including a pattern portion spaced apart from a metal wire of the winding-type coil in the body and having both end portions spaced apart from each other to have an open-loop, and a third lead-out portion connected to the pattern portion and exposed from the body; an insulating layer disposed between the winding-type coil and the noise removal portion; and first to third external electrodes arranged on the body to be spaced apart from each other and respectively connected to the first to third lead-out portions.