Electrical Connector Ground Terminals for High-Frequency EMI Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrical connectors fail to effectively manage increasing high-frequency signal interference due to inadequate grounding, leading to serious signal interference issues as the electronic industry advances.
Innovation Solution
The electrical connector design incorporates a terminal assembly with a ground terminal group featuring first and second contact portions arranged in a front-to-back direction, which protrude into a receiving cavity and engage with a shielding piece, along with a metal case and insulative housing, to enhance grounding and reduce electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional terminal assembly with single contact portion ground terminals is used, then the structure is simple, but the anti-EMI performance is insufficient for high-frequency signal transmission
Solution Approach 1:
The ground terminal is divided into two separate contact portions (first contact portion and second contact portion) that protrude into the receiving cavity at different positions. This segmentation allows each contact portion to engage with corresponding shielding pieces independently, creating multiple grounding paths that enhance anti-EMI performance without requiring a complete redesign of the entire terminal assembly structure.
Solution Approach 2:
The ground terminals extend in the front-to-back direction (perpendicular to the up-to-down stacking direction) by protruding contact portions into the receiving cavity. This dimensional change from a single-plane contact to a multi-depth contact configuration creates additional grounding contact points in the cavity space, improving EMI shielding effectiveness without significantly increasing overall device complexity.
2Reliability
If grounding terminals are extended into the receiving cavity, then grounding effectiveness is improved, but the device complexity increases
Solution Approach 1:
Instead of extending a single long ground terminal into the cavity, the grounding function is segmented into two separate contact portions that protrude at different depths and positions. This segmentation achieves comprehensive cavity coverage and multiple grounding paths while keeping each individual contact portion relatively simple in structure.
Solution Approach 2:
The first and second contact portions are integrated within the terminal assembly structure, with the ground terminals nested in the terminal assembly and the contact portions protruding into the receiving cavity. This nesting approach allows the grounding elements to be compactly arranged within the existing structural envelope, minimizing additional space requirements and complexity.
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 configuration significantly improves anti-EMI performance by ensuring effective grounding and shielding, reducing signal interference and maintaining compatibility with high-frequency transmission demands.
Implementation Method 1
a ground terminal group including a first contact portion and a second contact portion, wherein the first contact portion and the second contact portion are arranged in a front-to-back direction perpendicular to both the up-to-down direction and the elongate direction, and respectively protruding into the receiving cavity
Data Source
AI summary
An electrical connector for high-frequency transmission comprises an elongate insulative housing including a top wall and a bottom wall opposite to each other, and a pair of end walls respectively connecting two ends thereof, and a receiving cavity surrounded thereby; a terminal assembly received in the top wall and the bottom wall respectively, and stacked in an up-to-down direction; and a metal case enclosing the insulative housing; wherein the terminal assembly includes a signal terminal group, and a ground terminal group including a first contact portion and a second contact portion, wherein the first contact portion and the second contact portion are arranged in a front-to-back direction perpendicular to both the up-to-down direction and the elongate direction, and respectively protruding into the receiving cavity.