Capacitor Electrode Array Segmentation for High Q Factor
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Solution Overview
Problem
High frequency chip capacitors face challenges in achieving high Q factors and low equivalent series resistance (ESR) due to the limitations of current capacitor designs, which are inadequate for modern high frequency applications.
Innovation Solution
A capacitor electrode array is designed with solid electrodes broken into subsections connected by signal bus lines, incorporating a voltage tunable dielectric material, which increases the effective width of the signal path and reduces mechanical stresses, thereby enhancing the Q factor and reducing ESR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a solid electrode is used in conventional capacitor design, then the structure is simple and easy to manufacture, but the Q factor is low and ESR is high due to limited signal path width
Solution Approach 1:
The solid electrode is broken into multiple subsections (first electrode subsection, second electrode subsection, third electrode subsection) that are arranged in a specific pattern and connected through signal bus lines. This segmentation increases the effective width of the signal path through the electrode array, thereby reducing ESR and improving Q factor while maintaining manufacturability through standardized interconnection patterns
2Reliability
If the electrode is broken into subsections with signal bus lines, then the effective signal path width increases and Q factor improves, but the device complexity increases
Solution Approach 1:
Multiple electrode subsections are electrically connected through signal bus lines to function as a unified electrode array. The subsections work together to provide an increased effective signal path width, achieving low ESR and high Q factor. The merging of multiple simple subsections creates a complex-functioning electrode system that outperforms a single solid electrode
3Productivity
If conventional capacitor designs are used, then manufacturing is straightforward, but ESR remains high and the capacitor is unsuitable for high frequency applications
Solution Approach 1:
The electrode structure transitions from a conventional two-dimensional planar electrode to a three-dimensional electrode array with subsections arranged in multiple layers and positions. This dimensional expansion increases the effective signal path width without proportionally increasing the footprint area, thereby reducing ESR and enabling high-frequency operation with improved energy efficiency
Data Source
AI summary
An embodiment of the present invention provides a capacitor, including a solid electrode, an electrode broken into subsections with a signal bus lines connecting the subsections; and wherein the signal bus further connects the solid electrode with the electrode broken into subsections.