High-Frequency Connector Terminal Layout With Segmented Shielding
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Solution Overview
Problem
Existing connectors suffer from reduced shielding effectiveness and increased crosstalk due to long electrically-conductive paths and close signal terminal spacing, making it difficult to reliably prevent signal interference.
Innovation Solution
A connector design featuring a recessed groove and side walls with inclined high-frequency terminals, ground terminals, and reinforcing fittings that accommodate a shield plate, reducing crosstalk and enhancing shielding by increasing the distance between signal terminals and providing a more reliable connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If shield plates are used to prevent crosstalk between signal terminals, then shielding effect is improved, but the electrically-conductive path length increases and shielding effectiveness decreases
Solution Approach 1:
The shield plate is divided into multiple segments along its length, with each segment independently connected to ground terminals. This segmentation creates multiple shorter electrically-conductive paths to ground instead of one long path, maintaining effective shielding while reducing the length of individual conductive paths.
Solution Approach 2:
Ground terminals are introduced as intermediary connection points between the shield plate segments and the ground trace. These intermediaries create multiple ground connection points along the shield plate, establishing shorter electrical paths to ground and improving shielding effectiveness.
2Volume of moving object
If signal terminals are arranged closely to reduce connector size, then device compactness is improved, but crosstalk between terminals increases
Solution Approach 1:
Ground terminals serve as intermediary shielding elements positioned between closely-spaced signal terminals. These intermediaries create electromagnetic shielding zones that prevent crosstalk while allowing the signal terminals to maintain close spacing for compact connector design.
Solution Approach 2:
The connector structure provides localized shielding at specific positions between signal terminals using ground terminals and shield plate segments. This local quality approach allows compact overall design while maintaining signal integrity through targeted shielding in critical areas.
3Device complexity
If shield plate is connected at only one end to ground trace, then device complexity is reduced, but shielding effect decreases due to long conductive path
Solution Approach 1:
The shield plate connection structure is segmented into multiple connection points along its length, each connected to ground terminals. This segmentation maintains relatively simple overall structure while creating multiple shorter electrical paths to ground, improving shielding effectiveness without excessive complexity.
Data Source
AI summary
A connector includes a connector body and a terminal attached to the connector body, the connector being fitted with a counterpart connector, the connector body includes a recess being fitted with a counterpart connector body of the counterpart connector and side walls extending in a longitudinal direction of the connector body, the side walls defining both sides of the recess. The terminal includes a plurality of terminals disposed along each of the side walls, and the plurality of terminals disposed along each of the side walls include one high frequency terminal and ground terminals disposed on both sides of the high frequency terminal. In plan view, a straight line connecting high frequency terminals disposed along both the side walls is inclined with respect to a center line of the connector body in a width direction, and a shield plate of the counterpart connector extends along the center line.