High Frequency Electrical Connector Crosstalk Reduction
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Solution Overview
Problem
Existing electrical connectors experience crosstalk during high-frequency signal transmission due to improper arrangement of contacts.
Innovation Solution
The electrical connector features an insulative housing with a base and tongue, including first and second contacts with specific configurations: first contacts have transversely offset connecting sections reducing pitch, and second contacts have increased horizontal sections for improved shielding, eliminating crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contacts are arranged with standard pitch and configuration, then manufacturing is simple, but crosstalk occurs during high-frequency signal transmission
Solution Approach 1:
The patent applies asymmetry by offsetting the connecting sections of differential contacts toward each other while keeping contacting sections at standard pitch. This creates an asymmetric configuration where the connecting section pitch is smaller than the contacting section pitch, reducing crosstalk without requiring asymmetric contacting sections that would complicate mating connectors.
Solution Approach 2:
The patent applies local quality by making only the connecting sections asymmetric while keeping the contacting sections at standard configuration. This localized modification reduces crosstalk in the internal connection area without affecting the external interface, maintaining compatibility with standard connectors.
2Reliability
If the distance between differential contacts is reduced to minimize crosstalk, then signal transmission efficiency improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent segments the contact structure into distinct sections: contacting sections at standard pitch for easy manufacturing and connecting sections with reduced pitch for crosstalk reduction. The connecting section acts as a transition zone that bridges the contacting sections, allowing different pitches in different regions without requiring high precision throughout the entire contact.
Solution Approach 2:
The connecting section serves as an intermediary element between the contacting sections. It transitions the signal from the standard-pitch contacting section to the offset configuration, reducing crosstalk while maintaining compatibility with standard connectors. This intermediary structure absorbs the complexity of pitch transition.
3Reliability
If grounding contacts are made wider to improve shielding, then crosstalk reduction improves, but housing space requirements increase
Solution Approach 1:
The patent merges the grounding function with the shielding function by configuring grounding contacts to extend between differential contacts and connect to the housing. This combined approach provides both grounding and electromagnetic shielding without requiring separate shielding structures, saving space in the housing.
Solution Approach 2:
The grounding contacts serve multiple functions: electrical grounding, electromagnetic shielding, and structural support. This multi-functionality reduces the need for additional components, maintaining compact housing dimensions while providing effective shielding.
Data Source
AI summary
An electrical connector with an insulative housing and a plurality of contacts retained thereto. The housing includes a base and a tongue extending forwardly from the base. Each first contact includes, along the front-to-back direction perpendicular to the transverse direction, a front first contacting section, exposed above a mating face of the tongue, a rear first soldering section extending out of the housing, and a first connecting section located therebetween wherein in the pair of first different contacts, the first connecting sections are transversely offset from the corresponding first contacting sections and toward each other so as to have therebetween a distance, in the transverse direction, smaller than that between the corresponding first contacting sections.