LC Tank Segmented Inductance for EMI Reduction
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Solution Overview
Problem
Existing electronic products generate electromagnetic radiation that interferes with other devices and poses health risks, with prior solutions focusing solely on inductor design while neglecting the entire LC tank's radiation reduction.
Innovation Solution
An LC tank with a cross-interconnection structure and strategically designed tank areas, including a first and second part of inductance with a gap, and at least one capacitance formed inside the tank areas, to reduce electromagnetic radiation, along with a manufacturing method that determines the size and shape of these areas to achieve optimal radiation suppression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the inductor is designed in symmetric shape, then electromagnetic radiation is reduced, but the circuit layout optimization is limited
Solution Approach 1:
The LC tank is segmented into multiple tank areas with different area ratios, allowing flexible circuit layout optimization. The first tank area with larger area ratio can be positioned and sized differently from the second tank area, providing layout flexibility while maintaining radiation reduction benefits.
Solution Approach 2:
The patent deliberately introduces asymmetry in the tank area design - the first tank area has a larger area ratio than the second tank area. This asymmetric design provides circuit layout flexibility and optimization opportunities that would be constrained by a purely symmetric design, while still achieving electromagnetic radiation reduction through the overall tank structure.
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 LC tank effectively reduces electromagnetic radiation across the entire resonant tank, minimizing interference and health risks, while also optimizing circuit layout by incorporating capacitance and a metal or wave-adsorbing layer.
Implementation Method 1
an inductance-capacitance (LC) tank capable of reducing electromagnetic radiation by itself
Data Source
AI summary
The present invention discloses an LC tank capable of reducing electromagnetic radiation by itself and the manufacturing method of the same. An embodiment of said LC tank comprises: a first tank area whose boundary is defined by a first part of an inductance; a second tank area whose boundary is defined by a second part of the inductance in which the second part includes a gap; a cross-interconnection structure operable to electrically connect the first and second parts of the inductance and distinguish the first tank area from the second tank area; and at least one capacitance formed inside at least one of the first and second tank areas, wherein the area ratio of the first tank area to the second tank area is between 20% and 80%.