Receptacle Connector Shielding Shell Segmentation for EMI Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electrical connectors face challenges in effectively reducing electromagnetic interference (EMI) noise due to the lack of an efficient low-impedance path for interference currents, which current shielding designs fail to adequately address.
Innovation Solution
The electrical receptacle connector incorporates a first shielding shell with electrical connecting portions located between the front and bottom openings, closer to the bottom opening, which creates a short low-impedance path for interference currents, complemented by soldering legs that drain interference to ground, thereby reducing EMI noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional shielding shell design is used, then electromagnetic interference shielding is provided, but the low-impedance path for interference currents is insufficient and EMI noise is not adequately reduced
Solution Approach 1:
The shielding shell is segmented by adding electrical connecting portions at specific locations (between the front opening and bottom opening, closer to the bottom opening). This segmentation creates multiple electrical connection points that divide the interference current path into shorter segments, reducing the overall impedance and improving EMI noise reduction effectiveness.
Solution Approach 2:
The electrical connecting portions are positioned at specific spatial locations within the shielding shell structure, creating a three-dimensional network of electrical connections. This dimensional arrangement optimizes the path length and impedance characteristics for interference currents traveling through the shielding shell.
2Object-affected harmful factors
If electrical connecting portions are added to the shielding shell, then EMI noise reduction is improved, but the device complexity increases
Solution Approach 1:
The electrical connecting portions are integrated directly into the shielding shell structure, merging the shielding function with the electrical connection function. This consolidation achieves EMI noise reduction without adding separate, independent components, thereby limiting the increase in device complexity.
Solution Approach 2:
The shielding shell serves multiple functions: it provides electromagnetic interference shielding and simultaneously creates low-impedance paths for interference currents through the integrated electrical connecting portions. This multi-functionality reduces the need for additional dedicated components.
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 reduces EMI noise by providing a shorter path for interference currents and effective grounding, as demonstrated by lower noise intensity across various frequencies in testing.
Implementation Method 1
the electrical connecting portion is conducive to shortening a low-impedance path of interference currents so as to reduce EMI noise
Implementation Method 2
the electrical connector usually has a shielding shell to drain these electromagnetic interference to the ground
Data Source
AI summary
An electrical receptacle connector includes a shielding shell, an insulating body and a plurality of terminals. The shielding shell has a front opening, a bottom opening and an electrical connecting portion. The electrical connecting portion is located between the front opening and the bottom opening. The insulating body is disposed inside the shielding shell and has a tongue. The tongue is exposed to the front opening. The terminals are disposed at the insulating body. Each of the terminals has a contact segment and a soldering segment. The contact segment is located on the tongue, and the soldering segment is extended from the insulating body, exposed to the bottom opening and arranged in double rows.