Shielding Plate Grounding Layout for Connector Resonance Control
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Solution Overview
Problem
Existing electrical connectors face challenges in addressing grounding resonance issues, particularly in high-frequency signal-transmitting applications, where previous solutions like grounding bars and bridges fail to effectively shift resonance frequencies without altering connector dimensions.
Innovation Solution
An electrical connector design featuring a shielding plate with multiple grounding portions that contact grounding terminals, enhancing contact points and disrupting resonance cavities, thereby shifting resonance frequencies to higher ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If grounding bars are used to push resonance frequency higher, then grounding resonance issue is addressed, but connector dimensions must be altered
Solution Approach 1:
The shielding plate is segmented into multiple grounding portions (first grounding portions and second grounding portions) that contact different grounding terminals. This segmentation allows the resonance frequency to be shifted without requiring a single long grounding bar, thus avoiding dimension changes while maintaining grounding effectiveness
Solution Approach 2:
Instead of extending the grounding structure in the longitudinal direction (which would change connector dimensions), the patent uses a shielding plate that extends in the lateral direction with multiple grounding portions contacting different terminals. This dimensional shift allows resonance frequency adjustment without altering connector length
2Reliability
If grounding bridges are used to reduce electrical length of grounding terminals, then resonance frequency moves outside signal transmission range, but contact points are insufficient
Solution Approach 1:
The shielding plate is divided into multiple grounding portions (first grounding portions contacting first grounding terminals and second grounding portions contacting second grounding terminals). This segmentation increases the number of contact points compared to a single grounding bridge, improving electrical contact quality while maintaining resonance frequency control
Solution Approach 2:
Different grounding portions of the shielding plate contact different grounding terminals at different locations. This local distribution of contact points ensures comprehensive grounding coverage and multiple contact points, enhancing both resonance frequency control and electrical contact quality
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 improves electrical performance by increasing contact points and disrupting resonance cavities, ensuring high-frequency signal transmission without altering connector dimensions.
Implementation Method 1
each first grounding portion defines a vertical cutting face which touches a corresponding inner face of the plate portion of an associated grounding terminal
Data Source
AI summary
An electrical connector includes: a housing; a row of first terminals retained in the housing and comprising signal terminals and grounding terminals, each first terminal comprising a plate portion and a leg portion extending out of the housing, the plate portion defining an outer face exposed upon the housing and an inner face opposite the outer face, the outer face of the plate portion of the terminal defining a mating face; a first shielding plate parallel to and located by the inner faces of the first terminals; the first shielding plate defines plural first grounding portions, each first grounding portion defines a vertical cutting face which touches a corresponding inner face of the plate portion of an associated grounding terminal.