Coil Component Open Loop Noise Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing demand for reducing electromagnetic interference (EMI) noise in compact electronic devices poses a challenge as existing coil components are ineffective in efficiently removing high-frequency noise due to their design limitations.
Innovation Solution
A coil component design featuring a body with a support substrate and a noise removal portion forming an open loop pattern with a slit, separated from the coil portion by an insulating layer, and connected to external electrodes, which effectively reduces the path for high-frequency noise removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the coil component is reduced in size to meet compact electronic device requirements, then the device size is reduced, but the noise removal capability deteriorates
Solution Approach 1:
The patent divides the coil component into distinct functional segments: a coil portion for signal processing and a separately disposed noise removal portion for EMI suppression. This segmentation allows each part to be optimized independently, enabling effective noise removal even in compact sizes by placing the noise removal portion strategically within the body structure.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement by disposing the noise removal portion within the body at a specific distance from the coil portion, rather than relying solely on planar layout. This vertical/dimensional positioning creates an optimized noise removal path through the insulating layer, achieving effective EMI suppression in reduced footprint designs.
2Reliability
If a traditional closed-loop noise removal pattern is used, then the noise removal path is complete, but the high-frequency noise removal efficiency is reduced due to excessive path length
Solution Approach 1:
The patent employs an open-loop noise removal pattern with a slit that interrupts the complete closed loop, creating a controlled incomplete path. This partial action approach is sufficient for high-frequency noise removal because the interrupted path creates effective impedance discontinuity, achieving noise suppression without requiring the full closed-loop path length.
Solution Approach 2:
The patent changes the geometric parameter of the noise removal pattern from a closed loop to an open loop with a slit, and optimizes the distance between the coil portion and noise removal portion. These parameter changes create an optimized noise removal path that is shorter yet more effective for high-frequency noise, as the slit introduces beneficial impedance effects.
3Length of stationary object
If the noise removal portion is placed close to the coil portion, then the noise removal path is shortened, but the coupling between coil and noise removal portion increases causing interference
Solution Approach 1:
The patent introduces an insulating layer as an intermediary between the coil portion and the noise removal portion. This intermediate layer provides electrical isolation that prevents harmful electromagnetic coupling while maintaining a controlled, shortened noise removal path. The insulating layer acts as a mediator that enables close positioning without direct interference.
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 design significantly enhances the removal of high-frequency noise, improving signal transfer properties and effectively blocking unnecessary noise while maintaining low-frequency signal passage, as demonstrated by signal transfer property measurements.
Implementation Method 1
An insulating layer is disposed between the coil portion and the noise removal portion
Implementation Method 2
A noise removal portion is disposed within the body and spaced apart from the coil portion, and includes a pattern portion forming an open loop
Implementation Method 3
a pattern portion forming an open loop and having a slit between one end portion thereof and another end portion thereof spaced apart from each other
Data Source
AI summary
A coil component includes a body, a support substrate disposed within the body, a coil portion disposed on the support substrate and having first and second lead-out portions exposed to respective surfaces of the body, a noise removal portion disposed within the body and spaced apart from the coil portion, and including a pattern portion forming an open loop and having a slit between one end portion thereof and another end portion thereof spaced apart from each other. The noise removal portion also includes a third lead-out portion connected to the pattern portion and having one surface exposed to a side surface of the body. An insulating layer is disposed between the coil portion and the noise removal portion, and first to third external electrodes are disposed on respective surfaces of the body and connected to the first to third lead-out portions, respectively.