Capacitor Substrate Module Antiresonance Suppression
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Solution Overview
Problem
Capacitors with different self-resonant frequencies cause antiresonance when coupled, leading to increased impedance in power supply layers, which existing solutions attempt to mitigate by increasing equivalent series resistance, but this can deteriorate high-frequency characteristics and efficiency.
Innovation Solution
A substrate module with capacitors coupled via a conductor that absorbs antiresonance energy as Joule heat without significantly altering the equivalent series resistance or inductance, by positioning terminal conductors to create a larger potential difference at the coupling points, allowing energy to be effectively attenuated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If equivalent series resistance is increased to suppress antiresonance, then antiresonance is suppressed, but high-frequency characteristics and efficiency deteriorate
Solution Approach 1:
Instead of changing the ESR parameter, the invention changes the coupling configuration and conductor positioning. By optimizing the coupling conductor's position and the terminal conductors' arrangement, antiresonance is suppressed while maintaining low ESR and inductance, thus preserving high-frequency characteristics.
Solution Approach 2:
The invention replaces the traditional approach of using resistance (electrical parameter) to suppress antiresonance with a structural solution (coupling conductor configuration). This substitution allows antiresonance suppression through electromagnetic coupling rather than resistive damping, avoiding efficiency loss.
2Reliability
If equivalent series resistance is increased to suppress antiresonance, then antiresonance is suppressed, but power supply efficiency deteriorates
Solution Approach 1:
The invention substitutes resistive suppression with inductive/coupling-based suppression. The coupling conductor creates magnetic coupling between capacitors that suppresses antiresonance without converting energy to heat, thereby maintaining power supply efficiency while achieving reliable antiresonance suppression.
3Reliability
If terminal conductors are positioned to create larger potential difference at coupling points, then antiresonance energy absorption is improved, but device complexity increases
Solution Approach 1:
The invention applies local quality by positioning terminal conductors at specific locations on the capacitor electrodes to create optimal potential difference at coupling points. This localized optimization of conductor positions achieves effective antiresonance suppression without requiring complex overall device redesign.
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 approach effectively suppresses antiresonance without increasing equivalent series resistance or inductance, maintaining high-frequency performance and improving power supply efficiency.
Implementation Method 1
a first coupling conductor that absorbs antiresonance energy as Joule heat
Data Source
AI summary
A substrate module includes capacitors, a first coupling conductor, and a mounting substrate. The first coupling conductor couples two of the capacitors together. The mounting substrate includes a first power supply layer and a second power supply layer. The capacitors each include a first electrode, a second electrode, a first terminal conductor, a second terminal conductor, and a third terminal conductor. The first terminal conductor is coupled to the first electrode and to the first power supply layer. The second terminal conductor is coupled to the second electrode and to the second power supply layer. The third terminal conductor is coupled to the first coupling conductor. The third terminal conductor is coupled to the first electrode at a coupling position that is different from a coupling position of the first terminal conductor.