Shielded Connector Bridge for Thin-Profile Crosstalk Control
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Solution Overview
Problem
Existing electrical connectors lack effective shielding solutions that maintain thin profiles while providing adequate crosstalk suppression and impedance control, particularly in mechanically constrained regions.
Innovation Solution
An electrical connector design featuring a conductive plastic bridge embedded with a shield plate, which provides electrical bridging between ground terminals and incorporates a shield plate molded with the conductive plastic bridge, enhancing signal integrity and FEXT (Far End Crosstalk) performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a hybrid shield with conductive portions is used to suppress crosstalk, then crosstalk suppression is improved, but the shield must be positioned adjacent to signal conductors which impacts impedance
Solution Approach 1:
The patent uses a composite structure combining conductive plastic material with embedded metallic shield plates. The conductive plastic bridge integrates multiple shield plates at different positions to provide both crosstalk suppression and impedance control. The composite nature allows the shield to be effective without requiring positioning adjacent to signal conductors, thus resolving the contradiction between crosstalk suppression and impedance control.
Solution Approach 2:
The shield is divided into multiple discrete metallic shield plates embedded within the conductive plastic bridge at different locations. Rather than using a continuous shield that would impact impedance, the segmented shield plates provide localized crosstalk suppression at critical positions without adversely affecting overall impedance characteristics.
2Object-affected harmful factors
If conventional shielding structures are used, then crosstalk suppression is achieved, but the structure complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges the shielding function with the structural bridge element by integrating metallic shield plates within the conductive plastic bridge. This combination eliminates the need for separate shielding components and simplifies the overall structure, reducing device complexity while maintaining effective crosstalk suppression.
Solution Approach 2:
The integration of metallic shield plates within conductive plastic creates a composite shielding structure that can be manufactured as a single unit through injection molding, significantly simplifying manufacturing processes compared to conventional multi-component shielding structures.
3Volume of moving object
If thin hybrid shields are used to fit in mechanically constrained regions, then space constraints are satisfied, but adequate crosstalk suppression without impedance impact becomes difficult to achieve
Solution Approach 1:
The patent applies local quality by placing metallic shield plates at specific locations within the conductive plastic bridge where crosstalk suppression is most needed. The shield plates are positioned adjacent to signal conductors that are susceptible to crosstalk, providing targeted shielding effectiveness without requiring the entire shield structure to be thick or positioned in ways that would impact impedance.
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 design achieves reduced mating height, improved signal integrity, and enhanced FEXT suppression by utilizing a conductive plastic bridge and shield plate, maintaining a thin profile and effective shielding.
Implementation Method 1
a conductive plastic bridge disposed in the cavity to provide electrical bridging between the plurality of ground terminals
Implementation Method 2
a shield plate molded with the conductive plastic bridge and located between the two rows of terminals
Data Source
AI summary
An electrical connector includes: an insulative housing having a tongue and a cavity; two rows of terminals secured to the insulative housing and exposing respectively to two opposite surfaces of the tongue, each row of terminals having plural signal terminals and plural ground terminals, the plural ground terminals being exposed to the cavity; a conductive plastic bridge disposed in the cavity to provide electrical bridging between the plural ground terminals; and a shield plate molded with the conductive plastic bridge and located between the two rows of terminals.