Geometry-Aware Methodology for Coupling Mechanism Analysis and Radiation Mechanism Analysis

<p>"Due to the wide-band spectrum of digital signals, a variety of noise generators, including microprocessors, liquid crystal displays, digital microphones, high-speed traces, and double-data-rate memory modules, are found in consumer electronics products. Noise generated by digital circuits can couple to the antennas and degrade their sensitivity. Additionally, it also couples to metallic housings or heatsinks and produces a significant amount of emission. In this research, methodologies are presented to analyze the coupling and radiation mechanism in electronic devices.</p> <p>To investigate the coupling between the distributive geometries in the radio frequency interference (RFI) problem, a mesh-dependent partition-based coupling mechanism analysis method is provided based on the retarded partial element equivalent circuit (rPEEC) model. The proposed method can quantify the capacitive and inductive coupling between the layout partitions and offers a clear physical understanding of the coupling study.</p> <p>The dipole moment is a popular equivalent noise source for digital circuits. The characteristic mode theory (CMT) is used as a systematic method to study the interaction between the equivalent noise source and the metallic housings. An analytic modal-based equation is used to predict the emissions. Mitigation methodologies, such as component placement and grounding post design, are also discussed based on the modal analysis results.</p> <p>The transfer function method is commonly used for RFI problem analysis and mitigation. In this work, using the CMT, a modal-based analysis is provided to calculate the transfer function between the aggressor and the antenna port. The interference can be mitigated by component placement and changes in the antenna designs without compromising the antenna performance"--Abstract, p. iv</p>

Name thesis:degree_name

Ph. D. in Electrical Engineering

Grantor

Missouri University of Science and Technology

Author dc:creator

• WANG, XU

• Characteristic Mode
• PEEC
• Radiated Emission
• RFI
• Electrical and Computer Engineering
• Engineering

Repository record dc:identifier

https://scholarsmine.mst.edu/doctoral_dissertations/3252

OAI identifier oai:identifier

oai:scholarsmine.mst.edu:doctoral_dissertations-4257