Array Coil Component Layout for PCB Grounded High-Frequency Noise Removal
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Solution Overview
Problem
As electronic devices become more performance-oriented and smaller in size, they face increasing issues with high-frequency noise due to the array-type coil components used in them, which existing technologies have not effectively addressed.
Innovation Solution
The proposed solution involves an array-type coil component design with first and second coil portions spaced apart, connected to external and ground electrodes, allowing for easy removal of high-frequency noise by short-circuiting the second coil portion with a printed circuit board's ground, thereby reducing noise without the need for separate filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If array-type coil component is used to reduce mounting area, then area is reduced, but high-frequency noise increases
Solution Approach 1:
The coil component is divided into multiple coil portions (first coil portion and second coil portion) with different functions. The first coil portion handles signal transmission while the second coil portion is dedicated to noise filtering, allowing the component to reduce mounting area while effectively suppressing high-frequency noise through functional segmentation.
Solution Approach 2:
The patent converts the harmful high-frequency noise into a beneficial filtering function by designing the second coil portion to be short-circuited with the ground pad. This configuration transforms the noise-generating element into an active noise suppression mechanism, where the coil portion acts as a choke to block high-frequency noise while maintaining compact dimensions.
2Object-generated harmful factors
If separate filters are added to remove noise, then noise reduction is improved, but device complexity increases
Solution Approach 1:
The patent merges the coil function with the noise filtering function into a single integrated component. The first and second coil portions are formed on the same substrate and share common structural elements, eliminating the need for separate filter components and reducing overall device complexity while maintaining effective noise suppression.
Solution Approach 2:
The coil component is designed to perform multiple functions simultaneously: the first coil portion provides signal transmission while the second coil portion provides noise filtering. This multi-functional design eliminates the need for separate dedicated filter components, reducing device complexity while achieving effective high-frequency noise removal.
3Adaptability or versatility
If coupling coefficient is controlled for application requirements, then functionality is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by giving each coil portion distinct structural characteristics and positions. The first and second coil portions are arranged at different locations on the substrate with different orientations, allowing independent optimization of their electrical characteristics. This local differentiation enables coupling coefficient control through design rather than requiring extreme manufacturing precision.
Solution Approach 2:
The patent controls the coupling coefficient by changing geometric parameters such as the spacing, orientation, and dimensions of the coil portions. By adjusting these physical parameters during design, the coupling coefficient can be optimized for specific applications without requiring ultra-precise manufacturing tolerances, as the parameter adjustments provide sufficient control range.
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 effectively removes high-frequency noise from the coil component, enhancing noise reduction capabilities while maintaining component compactness and efficiency.
Implementation Method 1
first and second coil portions spaced apart from each other in the body; first and second external electrodes disposed on the body to be spaced apart from each other and connected to both ends of the first coil portion; and first and second ground electrodes spaced apart from each other on the body and connected to both ends of the second coil portion
Implementation Method 2
allowing for easy removal of high-frequency noise by short-circuiting the second coil portion with a printed circuit board's ground, thereby reducing noise
Data Source
AI summary
A coil component includes a body; first and second coil portions spaced apart from each other in the body; first and second external electrodes disposed on the body to be spaced apart from each other and connected to both ends of the first coil portion; and first and second ground electrodes spaced apart from each other on the body and connected to both ends of the second coil portion.