Radio Module Retention Interface for Wireless Substrates
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Solution Overview
Problem
Information handling systems, particularly wireless devices, face challenges in securely attaching radio modules to motherboards, leading to potential substrate shear or fracture under stress from antenna connections, which can compromise the module's retention and functionality.
Innovation Solution
The implementation of a high retention module interface using solder tabs and retention mechanisms, such as epoxy or glue, strategically positioned around the substrate's bottom surface to support the module and distribute stress from antenna connections to the motherboard, ensuring secure attachment and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solder tabs are used to attach the radio module to the motherboard, then the retention is improved, but the substrate may still experience shear stress or fracture under stress from antenna connections
Solution Approach 1:
The attachment system is segmented into multiple components: solder tabs for electrical connection and retention, and additional retention mechanisms (epoxy, glue, or mechanical retainers) positioned around the substrate's bottom surface. This segmentation distributes the stress-bearing function across multiple elements rather than relying solely on the solder tabs, preventing substrate shear or fracture while maintaining reliable retention.
Solution Approach 2:
The retention mechanisms are positioned around the substrate's bottom surface, utilizing the vertical dimension and peripheral areas rather than concentrating attachment points only at the center or edges. This dimensional distribution of retention forces helps spread stress across the substrate, preventing localized shear or fracture while maintaining overall module retention.
2Stability of the object's composition
If retention mechanisms are added around the substrate, then the stability is improved, but the device complexity increases
Solution Approach 1:
The retention mechanisms serve multiple functions: they provide mechanical retention of the radio module to the motherboard, distribute stress to prevent substrate shear or fracture, and maintain module stability during operation. By consolidating these functions into a single retention mechanism system, the design achieves high stability without proportionally increasing complexity.
Solution Approach 2:
The retention mechanisms are integrated into the module assembly process itself, where they automatically provide stress distribution and retention functionality as part of the standard attachment procedure. This self-service approach means the additional components do not require separate installation steps or complex control systems, thereby limiting the increase in device complexity while achieving enhanced stability.
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 solution enhances the retention and stability of radio modules by effectively distributing stress from antenna connections, preventing substrate shear or fracture and ensuring reliable operation of wireless devices.
Implementation Method 1
The radio module can be soldered to the mother board to provide high retention of the radio module to the mother board
Implementation Method 2
The implementation of a high retention module interface using solder tabs and retention mechanisms, such as epoxy or glue, strategically positioned around the substrate's bottom surface
Data Source
AI summary
A device includes a substrate, a first antenna connection, and a first retention mechanism. The substrate has a top surface and a bottom surface. The first antenna connection is mounted directly to the top surface of the substrate, and is configured to connect with a first antenna. The first retention mechanism is connected at a first location of the bottom surface of the substrate to provide support for the substrate at the first antenna connection when the first antenna connection is connected to the first antenna. The first location of the first retention mechanism is selected to be directly below the first antenna connection.