Staggered Multi-Row Connector Resonance Suppression
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Solution Overview
Problem
Multi-row connectors experience strong resonance between adjacent rows of contacts due to close proximity, leading to electrical performance issues like frequency domain crosstalk and time-domain concussion, necessitating a reduction in resonance without increasing the connector's volume.
Innovation Solution
The connector design features staggered corresponding contacts in adjacent rows by a predetermined distance of 1.20-1.80 times the contact pitch, specifically in the first direction, to suppress resonance between the rows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If two adjacent rows of contacts are designed to be relatively close to reduce connector volume, then the volume of the multi-row connector is reduced, but the electrical coupling between the two adjacent rows of contacts becomes stronger, resulting in stronger resonance and frequency domain crosstalk
Solution Approach 1:
The patent applies asymmetry by staggering the corresponding contacts of adjacent rows in a non-aligned manner. Specifically, the contacts in one row are offset from the contacts in the adjacent row by a predetermined distance, breaking the symmetric alignment that causes strong electrical coupling and resonance. This asymmetric arrangement reduces the harmful electromagnetic coupling while maintaining the compact connector structure.
Solution Approach 2:
The patent addresses the resonance issue by introducing a dimensional offset in the first direction (length direction) between corresponding contacts of adjacent rows. Instead of only considering the transverse spacing between rows, the solution adds a longitudinal staggering dimension, effectively using another spatial dimension to reduce electrical coupling while maintaining compact transverse dimensions.
2Length of stationary object
If the distance between two adjacent rows of contacts is reduced, then the connector size is minimized, but the frequency domain crosstalk between the rows increases due to stronger electrical coupling
Solution Approach 1:
The patent uses asymmetric staggering of contacts in the longitudinal direction to reduce electrical coupling between adjacent rows. By offsetting corresponding contacts by a predetermined distance (1.0-2.0 times the contact pitch) in the first direction, the symmetric coupling paths are disrupted, reducing frequency domain crosstalk and improving electrical performance while maintaining minimal row spacing.
Solution Approach 2:
The predetermined staggering distance acts as an intermediary parameter that mediates between the conflicting requirements of compact size and electrical performance. This specific offset distance (1.0-2.0 times contact pitch) serves as an optimal intermediate value that reduces electrical coupling without requiring increased separation between rows, thus maintaining compact dimensions while improving reliability.
3Ease of manufacture
If corresponding contacts in adjacent rows are aligned, then the manufacturing and assembly process is simplified, but strong resonance occurs between the rows due to strong electrical coupling
Solution Approach 1:
The patent deliberately introduces asymmetric staggering of corresponding contacts in the longitudinal direction to reduce resonance. Although this requires slightly more complex manufacturing and assembly compared to perfect alignment, the staggering distance is based on simple multiples of the contact pitch, making the process manageable. The benefit of reduced resonance and improved electrical performance outweighs the minor increase in manufacturing complexity.
Solution Approach 2:
The patent changes the positional parameter of corresponding contacts from aligned (zero offset) to staggered (predetermined offset of 1.0-2.0 times contact pitch). This parameter change in the longitudinal position effectively reduces electrical coupling and resonance between adjacent rows, transforming the contact arrangement from a high-risk aligned configuration to a low-risk staggered configuration.
Data Source
AI summary
A connector comprises an insulation body and at least two rows of contacts disposed in the insulation body. The at least two rows of contacts extend in a first direction. A plurality of first contacts of a first row of the at least two rows of contacts corresponds to a plurality of second contacts of a second row of the at least two rows of contacts. A pair of corresponding contacts in the first row and second row is staggered in the first direction by a predetermined distance set to be 1.20-1.80 times a contact pitch between a pair of adjacent contacts in each of the first row and second row.