Cable Connector Assembly Layout for PCB Signal Integrity
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Solution Overview
Problem
Existing cable connectors face issues with signal integrity loss, difficulty in miniaturization and lightweight design, and ineffective grounding shielding, particularly when connecting high-speed cables to PCBs, due to structural limitations and resonance risks.
Innovation Solution
A cable connector design featuring an insulative body with a terminal group and circuit board connection, where some cables are directly connected to the circuit board and others to a terminal group, utilizing conductive members outside the insulative body for improved grounding and shielding, and cable fixing assemblies for stable connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all cables are connected to wiring terminals, then connection reliability is improved, but device complexity and weight increase
Solution Approach 1:
The terminal group is divided into two distinct conductive terminal groups: a first conductive terminal group for connecting to the circuit board and a second conductive terminal group for connecting to cables. This segmentation allows different connection types (soldering to PCB vs. direct connection to terminals) to be used appropriately for different cables, reducing overall device complexity while maintaining reliability for high-speed signals.
Solution Approach 2:
Instead of connecting all cables to the circuit board through wiring terminals (conventional approach), the invention inverts the connection method by providing direct cable connections to the second conductive terminal group that is electrically connected to the circuit board. This inversion reduces the number of wiring terminals needed while maintaining reliable electrical connection.
2Ease of manufacture
If conventional cable connector design is used, then manufacturing simplicity is maintained, but signal integrity deteriorates
Solution Approach 1:
The first conductive terminal group acts as an intermediary between the circuit board and the terminal group, providing a dedicated soldering interface. This intermediary structure allows the circuit board to be soldered to the terminals in a conventional manner while the second conductive terminal group provides direct cable connections, thereby maintaining signal integrity for high-speed cables without complicating the manufacturing process.
3Ease of manufacture
If grounding pin is connected by vertical end portion in insulating base, then assembly simplicity is improved, but grounding effectiveness deteriorates
Solution Approach 1:
The grounding structure transitions from a vertical end portion connection (one-dimensional) to a planar surface connection (two-dimensional). The first conductive terminal group provides a larger surface area for grounding connection to the circuit board, significantly improving grounding effectiveness and reducing resonance risk while maintaining assembly simplicity through conventional soldering processes.
Data Source
AI summary
A cable connector relates to the field of connectors. The cable connector includes an insulative body, a terminal group, a circuit board, and a plurality of cables. The terminal group is mounted in the insulative body, and the terminal group includes a first conductive terminal group and a second conductive terminal group. The circuit board is electrically connected to the first conductive terminal group. The plurality of cables include first cables, and the first cables are electrically connected to the second conductive terminal group. The cable connector can improve the capacity and speed, realize signal integrity to the largest extent, and reduce a signal loss. In addition, the connector can realize a miniaturization and lightweight design.