Shielded Connector Pad Layout for Signal Crosstalk Reduction
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Solution Overview
Problem
Conventional electrical connectors experience signal crosstalk during transmission due to inadequate shielding, particularly between the connector and the mating connector, despite the use of electromagnetic shielding members within the cable connectors.
Innovation Solution
The electrical connector design incorporates a circuit board with ground and signal conductive pads, where the electromagnetic shielding member is connected to a shielding ground conductive pad, effectively reducing crosstalk by enhancing electromagnetic shielding between the connectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If ground terminals are disposed at intervals with signal terminals, then the connector structure is simple and easy to manufacture, but signal crosstalk occurs between adjacent signal terminals
Solution Approach 1:
An electromagnetic shielding member is introduced as an intermediary component between signal terminals to block electromagnetic interference. The shielding member includes a shielding ground conductive pad that contacts ground terminals and extends to cover signal terminals, effectively mediating the interference problem without changing the basic terminal arrangement structure
Solution Approach 2:
The shielding ground conductive pad extends in multiple directions from the ground terminals, creating a three-dimensional shielding structure that covers signal terminals from multiple angles. This dimensional extension enhances shielding effectiveness while maintaining the simple planar terminal arrangement
2Object-affected harmful factors
If an electromagnetic shielding member is added inside the cable connector, then crosstalk within the cable connector is reduced, but crosstalk between the cable connector and mating connector cannot be reduced
Solution Approach 1:
The shielding ground conductive pad merges the functions of internal and external shielding by extending from the ground terminals through the connector interface to the mating connector side. This unified shielding structure simultaneously addresses both internal and external crosstalk problems
Solution Approach 2:
The shielding ground conductive pad is pre-positioned and connected to ground terminals before connector assembly, establishing a ready-to-function shielding network that immediately protects against external interference upon connection
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration significantly improves signal transmission performance by minimizing crosstalk between signal terminals, ensuring reliable and interference-free communication.
Implementation Method 1
an electromagnetic shielding member... The shielding ground conductive pad is connected with the electromagnetic shielding member
Data Source
AI summary
An electrical connector connected with a cable connector. The cable connector comprises a plurality of ground terminals, a plurality of signal terminals, and an electromagnetic shielding member. The electrical connector comprises a circuit board, a plurality of ground conductive pads, a plurality of signal conductive pads, and a shielding ground conductive pad. The circuit board comprises an electrical connecting area. The plurality of ground conductive pads are disposed on a surface of the electrical connecting area of the circuit board at intervals. The plurality of signal conductive pads are disposed on the surface of the electrical connecting area of the circuit board at intervals. At least one signal conductive pad is disposed between two adjacent ground conductive pads. The shielding ground conductive pad is disposed on the surface of the electrical connecting area of the circuit board and is disposed on one side of the plurality of ground conductive pads.