Staggered SAS Connector Terminal Layout for Crosstalk Reduction
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Solution Overview
Problem
Current SAS connectors suffer from crosstalk issues due to close terminal arrangements, leading to reduced signal transmission quality and stability, especially as data transmission speeds increase.
Innovation Solution
The electrical connector design features staggered and non-overlapping terminal arrangements in three rows, with ground terminals strategically placed to separate signal terminals, and symmetrical bending and equal lengths of signal terminals to minimize crosstalk and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If terminals are arranged in two rows with ground terminal between differential signal terminal sets, then the connector structure is compact, but crosstalk occurs between signal terminals due to close spacing and partial overlap
Solution Approach 1:
The patent transitions from a two-row terminal arrangement to a three-plane staggered arrangement. Signal terminals are distributed across three different planes along the vertical direction, with ground terminals strategically positioned to separate signal terminals. This dimensional change increases the distance between adjacent signal terminals and eliminates overlap, effectively reducing crosstalk while maintaining connector compactness.
2Speed
If signal transmission frequency is increased for high-speed data transmission, then data transmission speed improves, but crosstalk phenomenon becomes more serious, reducing signal transmission quality and stability
Solution Approach 1:
The patent introduces ground terminals as intermediary elements that act as electromagnetic shields between signal terminals. These ground terminals are positioned to completely separate adjacent signal terminals, blocking electromagnetic interference and crosstalk. This intermediary structure allows high-frequency signal transmission while maintaining signal quality and stability by preventing harmful electromagnetic coupling between adjacent signal paths.
3Object-affected harmful factors
If ground terminal is located between two differential signal terminal sets, then some separation is achieved, but one signal terminal cannot be completely separated, allowing crosstalk to occur
Solution Approach 1:
The patent segments the terminal arrangement into three distinct planes along the vertical direction. Ground terminals are positioned on intermediate planes to completely separate signal terminals that are distributed on different planes. This segmentation approach ensures that each signal terminal is fully isolated from adjacent signal terminals by ground terminals, achieving complete crosstalk prevention through a systematic multi-plane structure.
Data Source
AI summary
An electrical connector includes an insulating case and a first terminal set including a first grounding terminal set, a first signal terminal set and a second signal terminal set arranged at intervals in the horizontal direction. The first grounding terminal set includes a first grounding terminal, a second grounding terminal and a third grounding terminal. The first signal terminal set is vertically staggered between the first grounding terminal and the second grounding terminal and includes a first signal terminal and a second signal terminal arranged at intervals in the vertical direction. The second signal terminal set is vertically staggered between the second grounding terminal and the third grounding terminal and includes a third signal terminal and a fourth signal terminal arranged at intervals in the vertical direction.