Multilayer Capacitor Simulation Model Using Plate-Shaped Electrodes
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Solution Overview
Problem
Current simulation models for multilayer capacitors in high-frequency electronic devices require long simulation times and often result in reduced accuracy for crosstalk analysis due to the inclusion of actual internal structures, which complicates three-dimensional electromagnetic field simulations.
Innovation Solution
A simulation model for multilayer capacitors is developed using plate-shaped internal electrode models positioned to intersect magnetic fields, with capacitance, equivalent series resistance, and equivalent series inductance set based on measured impedance characteristics, allowing for shorter simulation times while maintaining accuracy by reducing the complexity of internal electrode arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a simulation model includes the actual internal structure (actual shape and actual number of internal electrodes), then the simulation accuracy of crosstalk is improved, but the simulation time increases significantly
Solution Approach 1:
The patent creates a simplified copy of the internal electrode structure using plate-shaped models that replicate the essential electromagnetic characteristics without requiring detailed geometric accuracy. This allows the simulation to capture crosstalk behavior accurately while reducing computational complexity
Solution Approach 2:
The patent transforms the simulation approach by changing from geometrically-accurate modeling to parameter-based modeling, where the plate-shaped internal electrode models are positioned and dimensioned based on electrical characteristics rather than exact physical dimensions, thereby reducing simulation time while maintaining accuracy
2Productivity
If a single plate-shaped internal electrode model is used to simplify the simulation, then the simulation time is shortened, but the crosstalk simulation accuracy decreases
Solution Approach 1:
The patent divides the single plate-shaped internal electrode model into multiple segments positioned at different locations within the capacitor structure. Each segment captures the electromagnetic interaction of specific electrode regions, collectively providing accurate crosstalk simulation while maintaining computational efficiency
Solution Approach 2:
The patent enhances the plate-shaped model by adding positional dimensions and orientation parameters that allow the simplified model to interact with magnetic fields in three-dimensional space, thereby recovering the accuracy lost through geometric simplification
3Measurement precision
If plate-shaped internal electrode models are positioned to intersect magnetic fields, then the crosstalk simulation accuracy is maintained, but the model complexity increases
Solution Approach 1:
The patent applies different characteristics to different parts of the plate-shaped internal electrode models, with each model positioned and oriented according to its specific location within the capacitor. This allows accurate representation of local electromagnetic interactions without requiring complex global modeling
Data Source
AI summary
A simulation model of a multilayer capacitor for three-dimensional electromagnetic simulation includes a pair of input/output ports, a plate-shaped first internal electrode model and a plate-shaped second internal electrode model between the pair of input/output ports. A capacitance, an equivalent series resistance, and an equivalent series inductance obtained from an actually measured value of an impedance characteristic of the multilayer capacitor are set for the first internal electrode model and the second internal electrode model. The first internal electrode model faces two side surfaces opposed in a width direction of the multilayer capacitor. The second internal electrode model faces two main surfaces opposed in a height direction intersecting the width direction of the multilayer capacitor.