Masters Theses

Abstract

Radiated emissions from printed circuit boards (PCBs) are a significant concern in electromagnetic interference (EMI) and radio frequency interference (RFI). Shielding cans are widely used to mitigate these emissions but evaluating requires accurate characterization of equivalent noise sources. Slot-backed microstrip antennas are employed for this purpose due to their near-zero height, low parasitic radiation, and PCB-compatible structure, offering a practical alternative to conventional loop antennas. This paper presents a physics-based analytical model that integrates both the discontinuity effects and radiated characteristics of slot-backed microstrip structures within a unified circuit framework. An analytical expression for the dipole moment is proposed based on the equivalent circuit model of the antenna and is validated through both measurements using a dual TEM cell and full-wave 3D electromagnetic simulations. The dipole moment is derived from the voltage across the slot and provides a direct link between the antenna’s geometric parameters and its radiated power. This approach reduces reliance on computationally expensive simulations and provides practical design guidelines for optimizing the radiation intensity of slot-backed microstrip in EMI applications.

Advisor(s)

Hwang, Chulsoon

Committee Member(s)

Beetner, Daryl G.
Kim, DongHyun (Bill)

Department(s)

Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Summer 2025

Pagination

vi, 21 pages

Note about bibliography

Includes_bibliographical_references_(pages 18-20)

Rights

© 2025 Jongsuk Hyun , All Rights Reserved

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 12510

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