Variable-Property Shield Structure for Parasitic Capacitance Control
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Solution Overview
Problem
Existing solutions for mitigating parasitic capacitance in high-frequency circuits are bulky, do not provide good potential matching, and introduce a high capacitive load, which are not suitable for high bandwidth systems.
Innovation Solution
A device that surrounds at least a component portion of the electrical component at least partially around an axis, comprising two members with at least one varying property that varies along the axis, which can alleviate and/or eliminate the effects caused by capacitance between the electrical component and the environment, electromagnetic interference between the electrical component and the device, electromagnetic interference between the electrical component and the device, electromagnetic interference between the electrical component and its environment, and the device can be configured to influence the electric field in the region between the electrical component and the device such that the effect caused by capacitance between the electrical component and the environment can be reduced.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If shielding devices are used to reduce parasitic capacitance, then electromagnetic interference is reduced, but the device becomes bulky
Solution Approach 1:
The shielding device is divided into two separate members positioned on opposite sides of the electrical component, allowing distributed shielding coverage without requiring a single large bulky structure. Each member can be independently sized and positioned to optimize shielding effectiveness while minimizing overall device volume.
Solution Approach 2:
The two shielding members are positioned to face each other with the electrical component nested between them, creating a compact sandwich structure. This nested arrangement allows the shielding function to be integrated closely with the electrical component without adding significant external volume.
2Object-affected harmful factors
If traditional shielding structures are used, then electromagnetic interference is reduced, but the capacitive load increases
Solution Approach 1:
The shielding members are positioned to provide localized electromagnetic shielding only where needed around the electrical component, rather than using comprehensive full-enclosure shielding. This selective local shielding reduces the total capacitive surface area while maintaining effectiveness against the specific interference sources present.
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 device reduces parasitic capacitance, electromagnetic interference, and time delays by creating a controlled region around the electrical component, allowing for predictable and easier compensation of electric field effects, thereby enhancing the operational frequency and bandwidth of the electrical component.
Implementation Method 1
the device can be an electromagnetic shield for the electrical component. Hence, electromagnetic interference between the electrical component and an environment wherein the electrical component is located can be reduced and/or blocked
Implementation Method 2
Parasitic or stray capacitance can cause unavoidable and usually unwanted capacitance that exists between the parts of an electronic component or circuit simply because of their proximity to each other. When two electrical conductors at different voltages are close together, the electric field between them causes electric charge to be stored on them; this effect constitutes capacitance.
Data Source
AI summary
The present invention relates to a device for use with an electrical component, wherein the device is configured to surround at least a component portion of the electrical component at least partially around the axis thereby defining a region therebetween. The device comprises two members, wherein at least one of the members comprises at least one varying property that varies along an axis.