Coaxial Cable Vertical Attachment for Substrate Miniaturization
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Solution Overview
Problem
Existing coaxial cable attachment methods lack flexibility and efficiency, particularly when dealing with substrates of limited processing area, as they require precise alignment and arrangement of coaxial wires, limiting miniaturization and versatility.
Innovation Solution
A coaxial cable design where the sheath is removed at one end to expose the inner and outer conductors, allowing them to be soldered to contact pads on a substrate at different angles, enabling a higher degree of freedom in arrangement and allowing the cable to stand at an angle of 30° or greater, along with a method that involves bending the inner insulator relative to the sheath and soldering the outer conductor in a different direction to a second contact pad.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If coaxial wires are attached along the surface of the substrate, then the connection is simple, but the arrangement flexibility is limited and miniaturization is difficult
Solution Approach 1:
The coaxial wire is configured to stand upright at an angle of 30° or more relative to the substrate surface, transitioning from a planar arrangement to a three-dimensional vertical arrangement. This dimensional change enables flexible positioning on substrates with limited processing areas while maintaining simple attachment procedures
2Manufacturing precision
If the coaxial wire is removed and aligned precisely, then the connection precision is high, but the processing time increases
Solution Approach 1:
The inner insulator is pre-bent relative to the sheath before attachment, and the outer conductor is pre-bent in a direction different from the inner insulator. These preliminary bending actions eliminate the need for precise alignment during the attachment process, reducing processing time while maintaining connection precision
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 configuration enhances the flexibility and miniaturization of coaxial cable arrangements on substrates, enabling efficient connection of multiple coaxial wires to limited processing areas, facilitating the creation of more compact and versatile substrate designs.
Implementation Method 1
the exposed portion of the inner insulator is bent relative to the sheath
Implementation Method 2
the exposed portion of the outer conductor is soldered to the second contact pad with being bent in a direction different from the bending direction of the inner insulator
Implementation Method 3
the exposed portion of the center conductor is soldered to the first contact pad
Implementation Method 4
the exposed portion of the outer conductor is soldered to the second contact pad
Data Source
AI summary
A coaxial cable includes a coaxial wire in which an inner insulator, an outer conductor and a sheath are sequentially and coaxially provided around a center conductor, and a substrate having a surface on which a first contact pad and a second contact pad are arranged. The sheath is removed at one end portion of the coaxial wire by a predetermined length, so that the inner insulator and the outer conductor are exposed, and a tip end of the inner insulator is removed by a predetermined length, so that the center conductor is exposed. The exposed portion of the center conductor is soldered to the first contact pad with the exposed portion of the inner insulator being bent relative to the sheath, and the exposed portion of the outer conductor is soldered to the second contact pad with being bent in a direction different from the bending direction of the inner insulator. A part of the coaxial wire covered by the sheath is standing at an angle of 30.degree. or greater relative to the surface of the substrate.