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Design and simulation of coplanar waveguide structures for ferromagnetic resonance applications
Chauhan, Anshika Karki, Prem Aregbesola, Ayodimeji
Chauhan, Anshika
Karki, Prem
Aregbesola, Ayodimeji
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AChauhanAbstract.pdf
Adobe PDF, 101.44 KB
Other Names
Location
Time Period
Advisors
Original Date
Digitization Date
Issue Date
2025
Type
Abstract
Poster
Poster
Genre
Keywords
Ferromagnetic resonance,Coplanar waveguides,MATLAB,Simulation
Subjects (LCSH)
Citation
Chauhan, A., Karki, P., Aregbesola, A., & Ambal, K. Design and simulation of coplanar waveguide structures for ferromagnetic resonance applications. -- FYRE in STEM Showcase, 2025.
Abstract
Ferromagnetic resonance (FMR) is widely used to probe the magnetic behavior of materials, and high-frequency transmission structures like coplanar waveguides (CPWs) are essential to ensure signal integrity during such measurements. This project focuses on designing, simulating, and analyzing CPW structures to understand how trace width and dielectric material affect signal reflection, transmission, and impedance. The goal is to identify design parameters that support low-loss broadband operation and are suitable for FMR setups.
Simulations were conducted using MATLAB's Transmission Line Designer. CPW configurations were created using a fixed copper conductor while varying trace widths and dielectric materials, including Teflon, FR4, air, foam, plexiglass, and polystyrene. Characteristic impedance was recorded for each configuration, and S-parameter plots were generated over a frequency range of 0.9 to 1.15 GHz.
The results showed that narrower traces led to higher impedance, while wider traces reduced it. Material choice significantly affected impedance: low-permittivity materials such as air and foam yielded the highest impedance, while FR4 produced lower impedance along with greater signal reflection. S-parameter plots indicated that Teflon provided the most stable and efficient signal transmission across the selected frequency range, while FR4 showed greater loss and more pronounced resonance effects.
These findings demonstrate that both geometry and material selection have a measurable impact on CPW performance. By adjusting trace dimensions and substrate properties, designers can tune the electrical characteristics of CPWs to meet the specific requirements of FMR experiments and other high-frequency applications. Future steps include expanding the frequency range, testing coupled line configurations, and preparing the design for fabrication.
Table of Contents
Description
Poster and abstract presented at the FYRE in STEM Showcase, 2025.
Research project completed at the Department of Mathematics, Statistics and Physics.
Research project completed at the Department of Mathematics, Statistics and Physics.
Publisher
Wichita State University
Journal
Book Title
Series
FYRE in STEM 2025