In Modern Portable Electronic Devices, Solid-State Drives (SSDs) Are Commonly Used and Have Been Identified as One of the Dominant Electromagnetic Interference (EMI) Noise Sources that Can Cause RF Desensitization Issues. in This Paper, the EM Emission Source from an SSD Module is Identified and Analyzed using Near Field Scanning and Dipole Moment Source Reconstruction. the Identified Noise Current Path Including the Power Management Integrated Circuit and the Decoupling Capacitor is Validated with the Assistance of Full-Wave Simulation. the Measured Noise Voltage is Used as an Excitation in the Simulation and the Simulated Near Fields Showed a Good Correlation with Measured Near Fields in Both Pattern and Magnitude. based on the Validated Radiation Mechanism, an Optimized Layout is Proposed and Validated in Simulation Reducing the Far Field Radiation by 10 DB.
X. Su et al., "Near Field Scanning-Based EMI Radiation Root Cause Analysis in an SSD," 2023 IEEE Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMC+SIPI 2023, pp. 202 - 206, Institute of Electrical and Electronics Engineers, Jan 2023.
The definitive version is available at https://doi.org/10.1109/EMCSIPI50001.2023.10241665
Electrical and Computer Engineering
Keywords and Phrases
EMI; near field scan; radiation mechanism; SSD
Article - Conference proceedings
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01 Jan 2023