Receptacle Connector Ground Bus Insert for Signal Integrity
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Solution Overview
Problem
Receptacle connectors face challenges in maintaining signal integrity at high data rates due to difficulties in routing signal and ground contacts, which can lead to increased size and footprint issues, making it difficult to achieve both compact designs and reliable electrical connections.
Innovation Solution
A receptacle connector design featuring a contact module assembly with stacked first and second contact modules and a ground bus insert, where the ground bus insert includes electrically connected side rails that connect to corresponding ground contacts, providing electrical shielding and facilitating compact footprints while maintaining signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ground contacts are provided between signal contacts to provide electrical shielding, then signal integrity is improved, but the overall size of the receptacle connector increases
Solution Approach 1:
The ground bus insert merges multiple ground contacts into a single integrated component that provides electrical shielding between signal contacts while maintaining a compact footprint. The ground bus insert combines the functions of multiple ground contacts into one unified structure that interfaces with the circuit board through a single connector assembly.
Solution Approach 2:
The invention transitions from a planar arrangement of ground contacts to a three-dimensional stacked configuration where contact modules are arranged vertically. This allows ground shielding to be provided between signal contacts in the vertical dimension while keeping the horizontal footprint small.
2Reliability
If signal contacts and ground contacts are routed through the connector, then electrical connections are established, but routing becomes difficult and increases complexity
Solution Approach 1:
The connector is segmented into separate contact modules, each containing signal contacts and ground contacts arranged in a standardized configuration. This modular segmentation simplifies routing by providing clear separation between signal and ground paths while maintaining organized electrical connections.
Solution Approach 2:
The ground bus insert acts as an intermediary component that simplifies the routing complexity by providing a centralized ground connection point. Instead of routing multiple ground contacts individually through the connector, the ground bus insert mediates the connection between all ground contacts and the circuit board through a single interface.
3Area of stationary object
If the footprint of receptacle connectors is decreased, then space on circuit boards is reduced, but signal integrity problems occur
Solution Approach 1:
The invention resolves the footprint-signal integrity tradeoff by moving ground shielding functionality to the vertical dimension through stacked contact modules. This allows the horizontal footprint to be minimized while maintaining adequate ground shielding between signal contacts in the vertical arrangement.
Solution Approach 2:
Multiple ground contacts are merged into a single ground bus insert that provides comprehensive electrical shielding within the compact footprint. This consolidation maintains signal integrity by ensuring ground contacts are properly positioned between signal contacts without requiring additional horizontal space.
Data Source
AI summary
A receptacle connector includes a contact module assembly and a front housing receiving the contact module assembly. The contact module assembly includes first and second contact modules and a ground bus insert. The contact modules include dielectric frames holding contact leadframes including signal contacts and ground contacts. The first and second contact modules are stacked side by side with the ground bus insert therebetween. The ground bus insert includes ground conductors electrically connected together. The ground conductors include first and second side rails electrically connected to corresponding first and second ground contacts. The front housing has a receptacle slot receiving the signal contacts and ground contacts positioned to mate with the plug connector.