Multilayer Electronic Component LC Filter Noise Reduction
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Solution Overview
Problem
In TDMA schemes, battery voltage fluctuations and increased output voltage lead to signal amplification and noise deterioration, with existing solutions like ferrite beads and EMI filters not adequately addressing broadband attenuation and noise reduction demands, particularly for high frequency components.
Innovation Solution
A multilayer electronic component with a body comprising dielectric and/or magnetic layers, featuring a coil part and a capacitor part connected to filter high frequency components, where internal electrodes are connected to the coil part and exposed externally, forming a low pass filter with enhanced audio noise reduction capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a ferrite bead or dedicated EMI filter is used, then noise reduction effect is improved, but broadband attenuation characteristics and noise reduction performance remain insufficient
Solution Approach 1:
The patent combines an inductor and capacitor into a single integrated electronic component to form an LC filter. The inductor part and capacitor part are constructed within the same multilayer body, merging two separate noise filtering components into one unified structure that provides both broadband attenuation and effective noise reduction performance.
Solution Approach 2:
The patent employs composite material structures with dielectric layers and magnetic layers to construct the multilayer body. This composite approach enables the inductor and capacitor to coexist within the same component while maintaining their respective electromagnetic properties for effective high-frequency noise filtering across broad bandwidths.
2Power
If output voltage level is increased, then signal amplification is improved, but total harmonic distortion plus noise value deteriorates
Solution Approach 1:
The patent applies preliminary anti-action by placing the LC filter at the output stage to preemptively attenuate high-frequency noise and harmonic distortion before they can deteriorate the signal quality. The filter proactively removes unwanted frequency components, preventing their accumulation and ensuring clean signal output even at high voltage levels.
3Object-affected harmful factors
If a low pass filter with inductor and capacitor is implemented in a single component, then audio noise reduction effect is improved, but device complexity increases
Solution Approach 1:
The patent merges the inductor and capacitor into a single integrated component constructed through multilayer stacking. The inductor part and capacitor part share the same physical body with interconnected internal structures, eliminating the need for separate components while achieving effective audio noise reduction through the combined LC filtering action.
Solution Approach 2:
The patent employs a nested structure where the capacitor part is integrated within the same multilayer body as the inductor part. The internal electrodes and external electrodes are strategically arranged to create nested electromagnetic structures that function together as a unified low-pass filter, reducing component count while maintaining filtering effectiveness.
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 solution effectively removes high frequency noise components while maintaining the basic signal waveform, offering improved broadband attenuation characteristics and noise reduction, outperforming comparative examples by 10 dB or more in specific frequency bands.
Implementation Method 1
a capacitor part connected to the coil part and filtering a high frequency component of an input signal input to the input terminal
Implementation Method 2
a filter part including a coil part disposed in the body and a capacitor part connected to the coil part
Data Source
AI summary
A multilayer electronic component includes a body including a dielectric layer and/or a magnetic layer, a terminal part including an input terminal, an output terminal, and a ground terminal connected to the body, and a filter part including a coil part disposed in the body and a capacitor part connected to the coil part and filtering a high frequency component of an input signal input to the input terminal. The capacitor part includes a plurality of first internal electrodes connected to the coil part and a plurality of second internal electrodes exposed to an exterior of the body.