Cable Connector Assembly Pad Segmentation for Signal Integrity
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Solution Overview
Problem
Existing cable connector assemblies face issues with unreliable soldering, long signal transmission paths, and large volume due to the tight arrangement of coaxial and single core wires, which affect high-speed signal transmission performance.
Innovation Solution
A cable connector assembly design featuring a circuit board with distinct rows of pads for soldering coaxial and single core wires, where center conductors of coaxial wires are soldered to the first row and conductors and shielding layers are soldered to the second row, along with a cable management block to facilitate compact arrangement and reduce empty soldering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If all cables (coaxial wires and single core wires) are soldered side by side to the same row of soldering pads on the circuit board, then the arrangement is compact, but the soldering reliability decreases due to empty soldering and the signal transmission path becomes too long
Solution Approach 1:
The soldering pads are divided into two separate rows: a first row for soldering center conductors of coaxial wires and a second row for soldering conductors of single core wires and shielding layers of coaxial wires. This segmentation prevents empty soldering by providing dedicated soldering positions for different cable types, thereby improving soldering reliability while maintaining compact arrangement.
2Volume of moving object
If all cables are soldered side by side to the same row of soldering pads, then the arrangement is compact, but the signal transmission path on the circuit board becomes too long affecting high-speed signal transmission performance
Solution Approach 1:
By separating the soldering positions into two rows, the circuit board layout optimizes the signal transmission path length. Coaxial wires for high-speed signals can be connected to pads in the first row, reducing the transmission distance compared to soldering all cables to a single row, thereby improving signal transmission performance.
3Volume of moving object
If coaxial wires and single core wires are arranged tightly, then the overall volume is reduced, but the soldering stability decreases due to empty soldering
Solution Approach 1:
The patent divides the soldering area into two distinct rows, with the first row dedicated to center conductors and the second row dedicated to shielding layers and single core wire conductors. This segmentation ensures that each soldering position has a corresponding cable element, eliminating empty soldering positions and improving soldering stability.
Solution Approach 2:
Different regions of the circuit board are assigned different functions: the first row of pads is optimized for soldering center conductors while the second row is optimized for soldering shielding layers and single core wires. This local differentiation ensures optimal soldering conditions for each cable type, improving overall soldering stability.
Data Source
AI summary
A cable connector assembly includes: an electrical connector; a circuit board electrically connected to the electrical connector and including a first row of pads and a second row of pads located behind the first row of pads and separated from the first row of pads; and a cable electrically connected to the circuit board and including plural coaxial wires each including a center conductor and a shielding layer and plural single core wires each comprising a conductor; wherein the center conductors of the coaxial wires are soldered to the first row of pads of the circuit board, and the conductors of the single core wires and the shielding layers of the coaxial wires are soldered to the second row of pads of the circuit board.