1. Mentor : Xu Chen Advisor : Dr. José Schutt-Ainé
Reduction of Skin Effect Losses by Laminated Conductors Modeled in Ansys Q3D Extractor
Paprapee Buason
Mentor : Xu Chen Advisor : Dr. José Schutt-Ainé
Background Information
Model in Q3D Extractor
Setup in Q3D Extractor
The main purpose of this project is to reduce the skin effect losses
Attenuation is the factor indicating skin effect losses.
Need lower attenuation for less losses
Generate the cross section model of microstrip in Q3D-2D Extractor. Another model is laminated conductors.
Set up conductors: grounds and signal lines
The top picture on the left shows the cross-section figure of laminated conductors. The yellow sheets are insulators made by glass, while other sheets are conductors made by copper.
Attenuation Calculation
Firstly, we need to find propagation constant
𝛾= 𝑅+𝑗𝜔𝐿 𝐺+𝑗𝜔𝐶 ; 𝛾=𝛼+𝑗𝛽
Attenuation (𝛼) is the real part of 𝛾. Its inverse is skin depth (𝛿). 𝐴 𝑥 is the magnitude of wave in waveguide at distance x while 𝐴 0 is that in free space
𝐴 𝑥 𝐴 0 = 𝑒 −𝛼𝑥 ; 𝛼= 𝛿 −1
Graphs and Results
Analysis of Results
Generate results to see the value of R, L, G and C. Use this result to plot attenuation constant in MATLAB
Compare attenuation constant of solid and laminated conductors
The top graph is the result from laminated conductors.
Use MATLAB to compare two graphs
Analysis/Problems:
The trend shows that attenuation for laminated conductors is lower than that of solid conductor in high frequency(Above 1.61 GHz). So, laminated conductors have less losses: Satisfy what expected
Skills and Future Work
Acknowledgement
Skills:
Learn how to use Q3D and MATLAB
Learn the research process
Future work:
Generate wider and higher range of frequencies
Adjust the size of models for better results
I would like to thank my mentor Xu Chen for providing me some important ideas and concepts of how to design the models and thank Prof. José Schutt-Ainé for providing me some useful advices.
Reference
[1] Clogston, A. (1951). Reduction of Skin-Effect Losses by the Use of Laminated Conductors.Proceedings of the IRE, 
[2] Rahimi, A., & Yoon, Y. (2014). Low Loss Conductors for CMOS and Through Glass/Silicon Via (TGV/TSV) Structures Using Eddy Current Cancelling Superlattice Structure. 2014 Electronic Components & Technology Conference,