Connector Terminal Segmentation to Reduce Stub Effect
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Solution Overview
Problem
High-frequency signal transmission in connectors is hindered by the stub effect, which causes energy loss and reduces signal integrity due to open ends and impedance discontinuity during the matching of male and female connector structures.
Innovation Solution
The connector design features a terminal assembly with multiple protrusive portions on each pin that contact different positions on the signal pads, reducing open ends and inhibiting the stub effect, thereby improving signal transmission integrity and bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wiping operation is applied to pins during connector matching to ensure durable contact, then contact reliability is improved, but open ends are formed on the pins which induce stub effect and reduce signal transmission integrity
Solution Approach 1:
The pin is segmented into multiple contact portions (first contact portion and second contact portion) that contact the signal pad at different positions. This segmentation allows the pin to make contact without forming a single open end, thereby reducing the stub effect while maintaining reliable contact.
Solution Approach 2:
Different portions of the pin have different contact characteristics. The first contact portion and second contact portion are positioned to contact different regions of the signal pad, creating localized contact zones that eliminate the formation of open ends while ensuring durable contact through the wiping operation.
2Productivity
If the connector is designed for high-frequency signal transmission, then data transmission rate is improved, but energy loss due to conductor loss and dielectric loss increases
Solution Approach 1:
By segmenting the pin into multiple contact portions that contact different positions on the signal pad, the design eliminates open ends and reduces stub effect. This reduces signal reflection and energy loss, enabling higher frequency transmission with improved energy efficiency.
3Reliability
If multiple contact portions are provided on a single pin to contact different positions on the signal pad, then stub effect is reduced and signal integrity is improved, but pin structure complexity increases
Solution Approach 1:
The pin is divided into multiple contact portions (first contact portion and second contact portion) that contact different positions on the signal pad. This segmentation reduces stub effect and improves signal integrity while maintaining a relatively simple overall pin structure that can be manufactured using conventional processes.
Data Source
AI summary
A connector structure is provided. The connector structure includes an insulated housing and at least one terminal assembly. The terminal assembly includes an insulated shelter and at least one pins. The pins are connected to and penetrated through the insulated shelter. The pin includes a pin body and at least two protrusive portions. Each protrusive portion is connected to the pin body, and in a length direction of the pin body, the protrusive portions respectively extend corresponding contact portions. The contact portion is in contact with a corresponding signal pad of a circuit board, and the contact portions are at different positions of the signal pad. In additional, a terminal components of connector is also provided.