Cascade Multilayer Capacitor Structure for Low-Loss High-Frequency Power
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Solution Overview
Problem
Current multilayer capacitors face challenges in handling high frequencies and energy surges due to limitations in power handling and heat dissipation, leading to performance issues such as increased insertion loss at high frequencies.
Innovation Solution
The design incorporates a cascade configuration with alternating active and floating electrode layers, where floating electrodes enhance heat conduction and power handling by facilitating improved heat dissipation, and the use of cover layers and dummy electrodes optimizes mechanical adhesion and electrical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If traditional multilayer capacitor design is used, then manufacturing is simpler, but power handling capability and heat dissipation are insufficient
Solution Approach 1:
The capacitor is divided into multiple functional layers including active electrode layers, floating electrode layers, and cover layers. Each layer serves a specific function: active electrodes provide capacitance, floating electrodes enhance heat dissipation, and cover layers provide mechanical support. This segmentation allows the capacitor to handle higher power while maintaining manufacturability through standardized layer assembly processes.
Solution Approach 2:
The patent implements a nested structure where floating electrode layers are positioned between active electrode layers, and cover layers encapsulate the entire electrode stack. This nested arrangement maximizes space utilization, enables efficient thermal pathways through the layered structure, and maintains a compact form factor while improving power handling capability.
2Reliability
If traditional multilayer capacitor design is used, then device complexity is lower, but insertion loss increases at high frequencies
Solution Approach 1:
The patent applies local quality by positioning floating electrodes specifically in regions where heat dissipation is most critical, and using cover layers with optimized dielectric properties in specific locations to minimize signal loss. The active electrodes are arranged with specific spacing and orientation to reduce parasitic effects at high frequencies, thereby improving frequency performance without requiring complete structural redesign.
Solution Approach 2:
The patent transitions from traditional planar electrode arrangements to a three-dimensional layered structure with floating electrodes positioned at multiple heights and depths. This dimensional expansion creates additional thermal conduction pathways and reduces electromagnetic interference between electrodes, thereby reducing insertion loss at high frequencies while maintaining a compact footprint.
3Temperature
If traditional multilayer capacitor design is used, then manufacturing is easier, but heat dissipation is insufficient
Solution Approach 1:
The capacitor structure is segmented into distinct thermal management zones with floating electrode layers positioned to create thermal conduction pathways. These floating layers act as heat sinks and thermal bridges, conducting heat away from active regions. The segmented design allows heat to dissipate through multiple parallel pathways, improving thermal management while using standard layering manufacturing processes.
4Power
If cascade configuration with floating electrodes is used, then energy handling capability is enhanced, but device complexity increases
Solution Approach 1:
The patent merges multiple functions into the floating electrode layers, which simultaneously serve as electrical shields, thermal conduction pathways, and mechanical support structures. The cover layers also perform multiple functions including mechanical protection, electrical insulation, and thermal management. This functional merging reduces the need for separate components, thereby improving energy handling capability without proportionally increasing overall device complexity.
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 configuration results in multilayer capacitors with enhanced energy handling capabilities, exhibiting low insertion loss across a broad frequency range, including frequencies up to 60 GHz, and improved reliability and frequency performance.
Implementation Method 1
floating electrodes enhance heat conduction and power handling by facilitating improved heat dissipation
Data Source
AI summary
Multilayer capacitors are provided. For example, a multilayer capacitor may include first and second terminals adjacent first and second opposing end surfaces, respectively, and a plurality of active electrode layers, each active electrode layer including a first active electrode electrically connected with the first terminal and a second active electrode electrically connected with the second terminal. The first active electrode may be spaced apart from the second active electrode in a lengthwise direction to form an active electrode end gap. The multilayer capacitor also may include a plurality of floating electrode layers, including topmost and bottommost floating electrode layers. The plurality of active electrode layers may be an odd number such that a topmost active electrode layer is disposed between the topmost floating electrode layer and a top surface and a bottommost active electrode layer is disposed between the bottommost floating electrode layer and a bottom surface.