Receptacle Connector Ground Potential Equalization
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Solution Overview
Problem
Existing receptacle connectors face challenges in reducing crosstalk between adjacent signal line contacts due to uneven electric potentials of ground contacts, which degrades shielding effects for high-frequency signals, leading to increased noise and interference.
Innovation Solution
A receptacle connector design that integrates a common conductive resin contact to equalize the electric potentials of ground contacts, placed between every two signal line contacts, using a housing made of electrically-insulating synthetic resin and supported by an insulating synthetic resin member, effectively connecting all ground contacts together to enhance shielding and reduce crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If ground contacts are placed on both sides of signal line contacts in a G-S-S-G pattern, then shielding effect is improved, but electric potential uniformity of ground contacts deteriorates
Solution Approach 1:
Multiple ground contacts are electrically connected and merged into a single common ground potential through conductive resin filling, transforming individually isolated ground contacts into a unified ground system that maintains uniform electric potential across all ground contact points
Solution Approach 2:
Conductive resin is introduced as an intermediary material between ground contacts to establish electrical connection and potential equalization. The resin fills spaces between ground contacts and provides a conductive path that mediates the electrical potential relationship between otherwise isolated ground contacts
2Device complexity
If ground contacts are located at a distance from the ground common plane, then connector structure is simplified, but shielding effect against high-frequency signals deteriorates
Solution Approach 1:
Conductive resin serves as an intermediary that extends the ground common plane effect to ground contacts located at a distance. The resin creates an electrical continuity that allows distant ground contacts to maintain the same potential as the ground common plane, effectively bridging the spatial gap without requiring physical repositioning
Solution Approach 2:
The conductive resin establishes equipotential conditions between ground contacts at different locations by providing conductive paths that equalize their electric potentials, allowing them to function as if they were directly connected to the ground common plane without requiring physical proximity
3Stability of the object's composition
If a common contact made of metal is used to couple ground contacts, then electric potential equalization is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The material parameter of the common contact is changed from metal to conductive resin. This substitution maintains the essential function of electrical connection and potential equalization while fundamentally changing the material properties to achieve simpler integration, reduced complexity, and lower manufacturing costs
Solution Approach 2:
Conductive resin, as a composite material combining resin matrix with conductive fillers, is used to create the common contact. This composite material provides sufficient electrical conductivity for ground potential equalization while offering advantages of simplified structure, easier manufacturing, and reduced complexity compared to traditional metal common contacts
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 solution significantly reduces crosstalk between adjacent signal line contacts, improves shielding effectiveness, and suppresses noise, while simplifying the connector structure and reducing manufacturing costs by ensuring all ground contacts are electrically connected, thereby maintaining equal potentials across the circuit boards.
Implementation Method 1
a common contact made of a conductive resin material and configured to electrically connect the a plurality of ground contacts together among the a plurality of contacts
Implementation Method 2
a supporting member made of an electrically-insulating synthetic resin material
Data Source
AI summary
A receptacle connector used as an electrical connector. The receptacle connector includes: a housing in which a receiving space is formed, a connection target being inserted in the receiving space; a plurality of contacts being arranged parallel to one another, having a plurality of signal line contacts and a plurality of ground contacts, and being placed with every two adjacent signal line contacts for transmitting signals interposed between two ground contacts; a supporting member made of an electrically-insulating synthetic resin material, and configured to integrally support and fix thereto the plurality of contacts; and a common contact made of a conductive resin material and configured to be provided with a certain gap from each of the plurality of ground contacts to electrically connect the plurality of ground contacts. The plurality of contacts integrated together by the supporting member are received in the receiving space.