Backshell-Compressed Interposer Assembly for Low-Loss Signal Links
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Solution Overview
Problem
Conventional communication systems face challenges with signal and power output due to long electrical paths on circuit boards, leading to reduced performance and losses between connector interfaces and signal paths.
Innovation Solution
The implementation of an electronic assembly that includes an interposer assembly with compressible interposer contacts and a cable connector module, where the cable connector is compressed by a backshell to create a reliable mechanical and electrical connection, reducing signal losses and enhancing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional circuit board connections are used, then system assembly is straightforward, but signal losses increase and electrical performance deteriorates due to long electrical paths
Solution Approach 1:
An interposer assembly is introduced as an intermediary component between the circuit board and the electronic package. The interposer contains an array of contacts that provide direct electrical connection paths, eliminating the need for long trace routes on the circuit board. This mediator component reduces signal loss by providing shorter, more direct electrical pathways while maintaining system assembly simplicity.
2Adaptability or versatility
If connector interfaces are separated, then system modularity is improved, but connection reliability decreases due to interface losses
Solution Approach 1:
The system is segmented into modular components: a circuit board, an interposer assembly, and a cable connector module. Each component can be independently manufactured, tested, and replaced. The interposer assembly acts as a standardized interface module that ensures reliable electrical connections between segments, maintaining both modularity and connection reliability through consistent contact interfaces.
Solution Approach 2:
The interposer assembly serves as a mediator between separated connector interfaces, providing a stable intermediate connection point. This ensures that even when components are modular and separable, the electrical connection remains reliable through the interposer's array of contacts that directly bridge the circuit board and cable connector.
3Reliability
If compression force is applied to interposer contacts, then electrical connection quality improves, but mechanical stress on components increases
Solution Approach 1:
The interposer contacts are designed with adjustable compression parameters. The cable connector module applies a controlled compression force through the interposer contacts to the circuit board contacts. By optimizing the compression force parameter and contact material properties, the system achieves reliable electrical connection quality while keeping mechanical stress within acceptable limits for the components.
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 improves signal integrity and power output by minimizing signal losses and enhancing the electrical performance of communication systems, addressing the limitations of conventional systems with long electrical paths.
Implementation Method 1
The backshell includes a compression member engaging the cable connector and pressing the cable connector in the direction of the interposer assembly to compress the interposer contacts
Implementation Method 2
The backshell includes a window through the upper wall receiving a heat transfer element in thermal communication with the cable connector in the backshell cavity to dissipate heat from the cable connector
Data Source
AI summary
An electronic assembly includes an interposer assembly and a cable connector module coupled to the interposer assembly. The interposer assembly includes an array of compressible interposer contacts each having upper and lower mating interfaces defining separable mating interfaces. The cable connector module includes a cable connector having a module substrate including module contacts at a bottom of the module substrate coupled to the upper mating interfaces of the corresponding interposer contacts. The cable connector module includes a backshell including a backshell cavity that receives the cable connector. The backshell includes a compression member engaging the cable connector and pressing the cable connector in the direction of the interposer assembly to compress the interposer contacts.