Plug Connector Sleeve for Impedance Control
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Solution Overview
Problem
Conventional connector arrangements for differential signal transmission experience signal reflections and interference due to abrupt changes in characteristic impedance at the transition between the cable and the connector, particularly in high-frequency ranges.
Innovation Solution
A sleeve part is used to exert radial pressure on the wire pair in the widening section, maintaining the initial wire spacing and reducing the distance between the wires, thereby minimizing impedance fluctuations and ensuring a consistent characteristic impedance throughout the connector arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the wire pair diverges in the widening section from the cable to the connector, then the wires can be connected to the connector contacts, but the characteristic impedance changes abruptly causing signal reflections and interference
Solution Approach 1:
A sleeve part is introduced as an intermediary component in the widening section. This sleeve part exerts pressure from radially outside on the wire pair, maintaining a smaller mutual distance between the wires and thus preserving the characteristic impedance of the cable over a longer section, reducing abrupt impedance changes and signal reflections
Solution Approach 2:
The sleeve part changes the physical parameter of wire spacing in the widening section. By applying radial pressure, it maintains the wires at a smaller mutual distance that corresponds to the cable's characteristic impedance, rather than allowing them to naturally diverge to the larger spacing required for connector contact connection
2Reliability
If the wire spacing is maintained small in the widening section, then impedance consistency is improved, but the wires need radial compression force applied
Solution Approach 1:
The sleeve part serves as a force transmission intermediary that applies controlled radial pressure to the wire pair. This distributed pressure from the sleeve's inner surface maintains the wires in close proximity without requiring excessive localized force, achieving impedance consistency through mechanical compression
Solution Approach 2:
The sleeve part functions as a flexible or elastic shell that can deform to apply continuous radial pressure on the wire pair. This flexible constraint maintains the wires in the desired close spacing configuration throughout the widening section, providing sustained impedance control
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
The solution significantly reduces signal reflections and interference, especially in high-frequency ranges, by maintaining a consistent impedance profile from the cable to the connector, leading to improved signal transmission quality.
Implementation Method 1
a sleeve part, which at least partially surrounds the wire pair in the widening section, is provided for at least partially exerting pressure from radially outside on the wires of the wire pair in the widening section, in order to reduce the distance between them
Data Source
Figure 1~2
Figure 3~4
AI summary
The present invention relates to a plug connector arrangement (100) comprising a plug connector (10) and a cable (20) connected thereto, with at least one conductor pair for transmitting a differential signal, wherein the conductors (22, 24) of the conductor pair have a first mutual spacing (X) in a sheathed cable section (32), diverge in an expansion section (34) in the direction of the plug connector (10), and have a larger second mutual spacing (Y) in a guide section (36) of the plug connector, wherein a sleeve part (40) at least partially surrounding the conductor pair in the expansion section (34) is provided to exert pressure on the conductors (22, 24) of the conductor pair at least in sections, in order to reduce the spacing therebetween.