SSD Bottom Plane Layout to Avoid Cavity Resonance EMI
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Solution Overview
Problem
Electromagnetic interference (EMI) occurs between a solid state drive and a platform due to a cavity, leading to potential malfunction of devices connected to the platform.
Innovation Solution
The solid state drive is designed with a notch fastening part, a coupling part, and a bottom plane that forms a cavity, where the longitudinal lengths of the left and right parts of the bottom plane are shortened to avoid resonance frequencies overlapping with noise frequencies, thereby preventing EMI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the bottom plane forms a cavity with the platform, then the solid state drive can be mounted on the platform, but electromagnetic interference occurs due to resonance at certain frequencies
Solution Approach 1:
The patent changes the physical parameters of the bottom plane, specifically its longitudinal length, to modify the resonance frequency of the cavity. By adjusting the length parameter, the resonance frequency is shifted away from the operating frequency range, thereby eliminating electromagnetic interference while preserving the mounting function.
Solution Approach 2:
The bottom plane is divided into multiple sections with different lengths relative to the notch fastening part. This segmentation allows different portions of the bottom plane to have different longitudinal lengths, enabling precise control over the cavity resonance characteristics and effective EMI avoidance.
2Object-affected harmful factors
If the longitudinal length of the bottom plane is reduced to avoid resonance, then electromagnetic interference is prevented, but the area of the bottom plane is reduced
Solution Approach 1:
The patent applies local quality by making specific portions of the bottom plane (left and right parts relative to the notch fastening part) have different longitudinal lengths. This localized modification allows the EMI problem to be solved in specific areas without unnecessarily reducing the overall area of the bottom plane, maintaining adequate space for other functions.
3Object-affected harmful factors
If the bottom plane dimensions are modified to change resonance frequency, then EMI is avoided, but manufacturing precision requirements increase
Solution Approach 1:
The patent establishes specific parameter ranges for the longitudinal lengths of the bottom plane parts (less than a preset reference length). By defining clear parameter boundaries, the design provides a manufacturable solution that balances EMI avoidance with reasonable manufacturing precision requirements, avoiding overly tight tolerances.
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 design effectively prevents EMI, ensuring stable operation of connected devices by aligning resonance frequencies with target bands and avoiding noise interference.
Implementation Method 1
a cavity may exist between the solid state drive and the platform... electromagnetic interference (EMI) occurs between a solid state drive and a platform due to a cavity... avoid resonance frequencies overlapping with noise frequencies
Data Source
AI summary
The embodiments of the present disclosure relate to a solid state drive. According to embodiments of the present disclosure, the solid state drive may include a notch fastening part in which a notch connecting the solid state drive and a platform outside the solid state drive is fastened, a coupling part coupled to the socket of the platform, and a bottom plane that is a printed circuit board (PCB) plane that forms a cavity between the top plane of the platform when the coupling part is coupled to the socket of the platform.