Capacitor Integrated into Electrical Connector Signal Path
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Solution Overview
Problem
In high-speed electronic systems, the integration of capacitors within electrical connectors is challenging due to limited space on circuit boards and the potential negative impact on signal quality and reliability, as traditional capacitors can introduce noise and impedance mismatch.
Innovation Solution
The integration of a capacitor within an electrical contact, featuring a three-dimensional surface with a dielectric layer and conductive elements, which allows for optimized capacitance and reduced space requirements, while minimizing the introduction of noise and impedance issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If capacitors are mounted on the circuit board adjacent the electrical connector, then signal quality can be improved, but the available space on the circuit board is limited and may not accommodate the capacitors
Solution Approach 1:
The patent combines the capacitor function with the electrical connector by integrating the capacitor directly into the signal path within the connector housing. The capacitor is formed with conductive elements and dielectric layers that are part of the connector structure itself, eliminating the need for separate capacitor components on the circuit board.
Solution Approach 2:
The capacitor is nested within the electrical connector structure. The conductive elements and dielectric layers are positioned inside the connector housing, utilizing the existing space within the connector rather than requiring additional board space. This nested arrangement allows the capacitor to be contained within the connector's footprint.
2Reliability
If capacitors are added within the signal paths of the circuit board, then signal quality may be improved, but the relative arrangement of signal paths may become suboptimal, adding noise and reducing signal speeds
Solution Approach 1:
The capacitor is merged with the electrical connector structure, allowing it to be positioned optimally within the signal path without disrupting the overall layout of the circuit board. The connector's physical structure enables the capacitor to be placed at the precise location needed for signal conditioning while maintaining optimal signal path geometry.
Solution Approach 2:
The capacitor provides localized signal conditioning at the specific position where it is integrated within the connector. This local placement allows signal quality improvement at the connector interface without requiring changes to the overall signal path arrangement on the circuit board, thus maintaining optimal signal speeds throughout the system.
3Device complexity
If discrete capacitors are held within the electrical connector using solder, then the capacitor can be integrated within the signal path, but the solder joints may be brittle and introduce reliability concerns
Solution Approach 1:
The patent replaces the mechanical solder joint system with an integrated structural system. The capacitor's conductive elements are formed as part of the connector's metal components through processes like electroplating or electroless plating, creating a metallurgical bond rather than a mechanical solder joint. This eliminates the brittle solder joints and associated reliability concerns.
Solution Approach 2:
The capacitor structure utilizes composite construction with multiple dielectric layers and conductive elements. The integration of these different materials creates a unified structure where the capacitor is inherently part of the connector, eliminating the need for separate joining processes and improving overall reliability.
4Reliability
If traditional capacitors are used, then capacitance function is provided, but impedance mismatch and noise introduction occur
Solution Approach 1:
The capacitor structure is designed with specific local properties at the signal path interface. The dielectric layers and conductive elements are configured to provide the necessary capacitance while maintaining impedance continuity with the surrounding transmission line structure. This local optimization minimizes reflections and impedance mismatch.
Solution Approach 2:
The patent optimizes the physical parameters of the capacitor structure, including the thickness and material composition of dielectric layers and the geometry of conductive elements. By carefully controlling these parameters, the capacitor provides the required capacitance value while minimizing parasitic inductance and resistance, thereby reducing noise and impedance mismatch.
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 solution enhances signal quality and reliability by providing a compact capacitor structure that matches impedance and reduces noise, addressing the space constraints and performance limitations of traditional capacitor integration methods.
Implementation Method 1
A dielectric layer is formed directly on the 3D surface of the first conductive element in engagement with the 3D surface
Data Source
AI summary
An electrical contact includes a body having a mating segment. At least a portion of the mating segment defines a first conductive element having a three-dimensional (3D) surface. A dielectric layer is formed directly on the 3D surface of the first conductive element in engagement with the 3D surface. A second conductive element is formed on the dielectric layer such that the dielectric layer extends between the first and second conductive elements. The first and second conductive elements and the dielectric layer form a capacitor.