Shielded Electrical Receptacle Layout for High-Speed Signal Integrity
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Solution Overview
Problem
Current high-speed electrical connectors face challenges in achieving improved high-frequency performance.
Innovation Solution
The design includes an electrical receptacle with a specific arrangement of terminals and shielding structures, featuring a vertical alignment of terminal modules with offset contact sections and integrated shielding plates for enhanced grounding and reduced resonance, allowing for efficient high-speed signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional terminal arrangements are used in high-speed electrical connectors, then manufacturing and assembly are simpler, but high-frequency performance deteriorates due to signal interference and resonance
Solution Approach 1:
The terminal arrangement is segmented into four distinct rows (first, second, third, and fourth terminals) with specific offset patterns. This segmentation allows each row to be independently optimized for signal transmission, reducing interference between adjacent signals while maintaining manageable manufacturing complexity through modular assembly procedures.
Solution Approach 2:
The patent employs asymmetric offset arrangements where the first and second terminals are offset from the third and fourth terminals in the longitudinal direction. This asymmetric configuration breaks the symmetry that would otherwise create resonant patterns at high frequencies, thereby improving high-frequency performance without requiring overly complex symmetric structures.
2Reliability
If terminal contact sections are aligned in conventional patterns, then manufacturing precision requirements are reduced, but signal transmission stability deteriorates due to increased resonance and interference
Solution Approach 1:
Different rows of terminals are assigned different offset patterns relative to their corresponding ground terminals. The first and second terminals have one offset configuration while the third and fourth terminals have a different offset configuration. This local differentiation optimizes signal transmission stability for each signal pair while maintaining overall manufacturing feasibility through standardized offset distances.
3Reliability
If simpler grounding structures are used, then device complexity is reduced, but high-frequency performance deteriorates due to inadequate shielding and increased resonance
Solution Approach 1:
Ground terminals are positioned between signal terminals in an alternating pattern (first signal, ground, second signal, ground, third signal, ground, fourth signal). These ground terminals act as intermediaries that provide shielding and reference potential for adjacent signal terminals, reducing electromagnetic interference and resonance without requiring complex external grounding structures.
Data Source
AI summary
An electrical connector includes an insulative housing defining a front cavity for receiving and a rear cavity, a terminal assembly assembled in the rear cavity, and a ground member. The terminal assembly includes an upper terminal module, a lower terminal module sandwiching a shielding module therebetween. SaidThe upper terminal module includes a pair of upper ground terminals. SaidThe lower terminal module includes a plurality of lower ground terminals. SaidThe shielding module includes a metallic shielding plate. The ground member is associated with the shielding module to mechanically and electrically connect at least one of the upper ground terminals and the lower ground terminals with the shielding plate.