Coil Component Structure for RF Noise Suppression
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Solution Overview
Problem
As electronic devices become more performance-oriented and miniaturized, they face increased probabilities of radio-frequency (RF) noise issues due to higher working frequencies and increased numbers of electronic components, which existing coil components struggle to effectively address.
Innovation Solution
A coil component design featuring a body with a core, a coil portion, external electrodes, and a noise removal portion that surrounds the coil portion, connected to a third external electrode, effectively suppressing RF noise by forming a closed-loop inductive coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a conventional coil component is used, then the device can operate at higher working frequencies, but radio-frequency (RF) noise increases
Solution Approach 1:
The patent applies the principle of converting harm into benefit by using the RF noise itself as a signal to be processed. The noise removal portion is configured to detect the RF noise generated by the coil portion and convert it into a useful function by generating a counteracting signal. This transforms the harmful RF noise into a beneficial noise cancellation mechanism, allowing the coil to operate at high frequencies without suffering from noise interference.
Solution Approach 2:
The noise removal portion acts as an intermediary element between the coil portion and the external environment. It is disposed between the coil portion and the external electrode, serving as a mediator that intercepts and processes RF noise before it can propagate outward. This intermediary structure enables the system to maintain high-frequency operation while filtering out harmful noise through the third external electrode connection.
2Object-affected harmful factors
If the noise removal portion is added to suppress RF noise, then RF noise is reduced, but the device complexity increases
Solution Approach 1:
The patent applies merging by integrating the noise removal portion with the existing coil structure. Rather than adding a completely separate noise cancellation device, the noise removal portion is merged with the coil portion and external electrode assembly. This combination allows the noise suppression function to be achieved while sharing structural elements, thereby reducing the overall complexity increase that would result from entirely separate components.
Solution Approach 2:
The noise removal portion is designed with multi-functionality, serving both as a structural component of the coil assembly and as an active noise cancellation element. By making this component universal—serving dual purposes of structural support and RF noise removal—the patent avoids the need for additional dedicated noise cancellation components, thus limiting the increase in device complexity while achieving effective noise suppression.
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 coil component effectively suppresses RF noise while allowing direct current and low-frequency signals to pass, improving noise removal efficiency beyond the self-resonance frequency, thus enhancing the performance of electronic devices.
Implementation Method 1
a noise removal portion disposed to at least partially surround the coil portion between a surface of the body and the core and having both end portions, each connected to the third external electrode
Data Source
AI summary
A coil component includes a body having a core, a coil portion disposed in the body and having a central portion in which the core is disposed, a first external electrode and a second external electrode, each connected to the coil portion, a third external electrode spaced apart from each of the first and second external electrodes, and a noise removal portion disposed to at least partially surround the coil portion between a surface of the body and the core and having both end portions, each connected to the third external electrode.