Plug Connector Impedance Control via Supporting Sleeve
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Solution Overview
Problem
Conventional plug connector arrangements often experience undesired deviations in characteristic impedance at the connection between the plug connector and coaxial cable, leading to suboptimal electrical matching and increased manufacturing effort when attempting to improve impedance.
Innovation Solution
A method involving a supporting sleeve that is pushed onto the coaxial cable, with the outer conductor folded back over it, and then inserted into the plug connector's sleeve portion, where the sleeve is moved to an axial limit stop to ensure a stable, high-tensile-strength connection and maintain constant impedance by crimping the sleeve portion with the coaxial cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the outer conductor housing is crimped or pressed together with the outer conductor of the cable in the conventional manner, then a connection between the plug connector and cable is established, but undesired deviations from the intended characteristic impedance occur in the region of the connection
Solution Approach 1:
The supporting sleeve is pushed onto the end of the coaxial cable and the outer conductor is folded back over the supporting sleeve before introduction into the plug connector. This preliminary preparation ensures that the outer conductor is properly positioned and supported prior to the crimping operation, preventing impedance deviations during the connection process
Solution Approach 2:
The supporting sleeve acts as an intermediary component between the outer conductor and the plug connector. It provides mechanical support and maintains the geometric relationship between the inner and outer conductors in the critical transition region, ensuring continuous shielding and stable characteristic impedance throughout the connection
2Manufacturing precision
If additional sleeve components or crimp points are added to improve characteristic impedance matching, then the electrical matching in the connection region is improved, but the amount of effort involved in manufacturing increases
Solution Approach 1:
The supporting sleeve performs multiple functions simultaneously: it provides mechanical support for the outer conductor, maintains the geometric relationship between conductors for impedance control, and serves as a structural element for the connection. This multi-functionality achieves improved characteristic impedance matching without requiring additional separate components or operations
Solution Approach 2:
The function of supporting the outer conductor and maintaining impedance is merged into the supporting sleeve component itself, rather than requiring separate impedance-matching components. The sleeve integrates structural support and electrical performance maintenance into a single element, simplifying the manufacturing process while achieving the desired electrical characteristics
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 method provides a stable and high-tensile-strength connection with optimal electrical matching along the coaxial cable's longitudinal direction while minimizing manufacturing effort by maintaining constant spacing between the inner and outer conductors, thus preventing abrupt impedance changes.
Implementation Method 1
The supporting sleeve (30) is surrounded by the outer conductor (22) in an axially extending fashion, such that friction between the supporting sleeve (30) and the outer conductor (22) prevents the supporting sleeve (30) from moving relative to the coaxial cable (20) in the longitudinal direction of the cable
Implementation Method 2
the sleeve portion is then crimped together with the end of the coaxial cable carrying the supporting sleeve
Data Source
AI summary
A method for producing a plug connector arrangement, having a plug connector and a coaxial cable attached thereto, wherein (a) a support sleeve is pushed onto one end of the coaxial cable, (b) an outer conductor of the coaxial cable is folded back about the support sleeve, (c) the end of the coaxial cable with the support sleeve is introduced into a sleeve portion of the plug connector, and (d) the support sleeve is subsequently moved forward relative to the coaxial cable and the plug connector as far as an axial stop in the sleeve portion. A plug connector arrangement is produced in accordance with this method.