Electrical Connector Impedance Transition for Low-Loss Signal Testing
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Solution Overview
Problem
Existing test devices experience signal loss due to impedance mismatch between connectors, circuit boards, and cables, especially at higher frequencies, affecting testing accuracy.
Innovation Solution
An electrical connector with a central conductive terminal featuring a first and second fitting portion and an intermediate impedance transition area, allowing for smooth impedance transitions from a first impedance value to a second impedance value through a gradually changing third impedance value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the impedance of connectors, cables, and circuit boards is designed to be consistent, then signal transmission quality is improved, but the adaptability to different transmission speed requirements is worsened
Solution Approach 1:
The patent applies local quality by creating different impedance zones within the connector. The connector body has a first impedance value optimized for high-speed transmission, while the interface portion has a second impedance value optimized for lower-speed components. This allows different parts of the same connector to serve different functional requirements, enabling the connector to adapt to various transmission speed requirements while maintaining signal quality in each zone.
2Reliability
If an impedance transition structure is added to the connector, then impedance mismatch is reduced, but the device complexity increases
Solution Approach 1:
The patent merges the impedance transition function directly into the connector body structure itself, rather than adding a separate transition component. The connector body is designed with a specific geometric configuration that naturally provides the impedance transition from the first impedance value to the second impedance value. This integration approach achieves impedance matching while minimizing additional structural complexity.
3Loss of energy
If the connector maintains consistent impedance throughout, then signal loss is reduced, but the ability to interface with different impedance components is worsened
Solution Approach 1:
The patent applies parameter changes by deliberately varying the impedance parameter along the signal path within the connector. The connector body maintains a first impedance value for optimal high-speed signal transmission, while the interface portion transitions to a second impedance value to match lower-speed components. This controlled parameter variation reduces signal loss in each zone while enabling interface compatibility with different impedance components.
Data Source
AI summary
An electrical connector includes an outer shell, an insulating element, and a central conductive terminal. The outer shell includes a mounting hole. The insulating element is installed in the mounting hole. The central conductive terminal includes a first fitting portion, a second fitting portion and an intermediate portion. When a signal is transmitted in the first fitting portion, it encounters an impedance having a first impedance value. When the signal is transmitted in the second fitting portion, it encounters an impedance having a second impedance value. The intermediate portion includes an impedance transition area. When the signal is transmitted in the impedance transition area, it encounters an impedance having a gradually changing third impedance value. The first impedance value, the third impedance value and the second impedance value generally have a smooth transition. An adapter and a test device having the electrical connector are disclosed.