Dual Circuit Card Pluggable Module Staggered Cable Termination
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Solution Overview
Problem
Existing pluggable modules in communication systems suffer from signal degradation and cross-talk due to tight cable packaging, which limits signal integrity and data throughput.
Innovation Solution
The design incorporates a pluggable module with staggered and offset cable termination areas on dual circuit cards, providing physical separation and improved routing to reduce cross-talk, enhancing signal integrity and data throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If cables are packaged at a tight pitch along the edge of the circuit card, then contact density increases, but cross talk and signal degradation occur
Solution Approach 1:
The patent transitions from a two-dimensional planar arrangement of cable termination areas to a three-dimensional staggered configuration. Cable termination areas are positioned at different depths and lateral positions, creating a multi-layered structure that increases effective contact density while maintaining sufficient spacing to reduce electromagnetic interference and signal degradation between adjacent cables.
Solution Approach 2:
The cable termination areas are divided into multiple discrete zones positioned at different locations along the circuit card edge. Each termination area is segmented and distributed across multiple dimensions rather than being concentrated in a single plane, allowing for higher overall contact density while maintaining signal integrity through increased separation between individual cable paths.
Data Source
AI summary
In one embodiment, a pluggable module is provided. The pluggable module includes a pluggable body having a top wall, a bottom wall, a first side wall and a second side wall. The pluggable body has a cavity. The pluggable body extends between a mating end and a cable end. An upper module circuit card is received in the cavity. The upper module circuit card has a mating edge at a mating end configured to be loaded into an upper card slot of a card edge connector and a cable end opposite the mating end. The upper module circuit card includes first upper contact pads on an upper surface of the upper module circuit card at the mating end. The upper module circuit card includes second upper contact pads on a lower surface of the upper module circuit card at the mating end. The upper module circuit card includes first upper cable termination areas on the upper surface of the upper module circuit card at the cable end. The upper module circuit card includes second upper cable termination areas on the lower surface of the upper module circuit card at the cable end. The first upper cable termination areas include first upper cable pads electrically connected to corresponding first upper contact pads. The second upper cable termination areas include second upper cable pads electrically connected to corresponding second upper contact pads. A lower module circuit card is received in the cavity. The lower module circuit card has a mating edge at a mating end configured to be loaded into a lower card slot of a card edge connector and a cable end opposite the mating end. The lower module circuit card includes first lower contact pads on an upper surface of the lower module circuit card at the mating end. The lower module circuit card includes second lower contact pads on a lower surface of the lower module circuit card at the mating end. The lower module circuit card includes first lower cable termination areas on the upper surface of the lower module circuit card at the cable end. The lower module circuit card includes second lower cable termination areas on the lower surface of the lower module circuit card at the cable end. The first lower cable termination areas includes first lower cable pads electrically connected to corresponding first lower contact pads. The second lower cable termination areas includes second lower cable pads electrically connected to corresponding second lower contact pads. Upper cables have upper cable conductors terminated to corresponding first and second upper cable pads. Lower cables having lower cable conductors terminated to corresponding first and second lower cable pads. Adjacent first upper cable termination areas are staggered relative to each other. Adjacent second upper cable termination areas are staggered relative to each other. Adjacent first lower cable termination areas are staggered relative to each other. Adjacent second lower cable termination areas are staggered relative to each other.