This paper presents a comprehensive uncertainty-aware framework for analyzing terahertz channel transmission in dielectric waveguides positioned near printed circuit board substrates, using finite-difference electromagnetic solvers with Monte Carlo sampling and Polynomial Chaos Expansion methods to quantify uncertainty propagation.
Key findings
Separation distance dominates uncertainty contributions at higher frequencies.
Waveguide permittivity variations become significant below 0.5 THz.
Uncertainty-aware predictions provide wider confidence intervals capturing experimental variability.
Limitations & open questions
The study focuses on dielectric waveguides near PCB substrates and may not generalize to other environments.
The deterministic baseline model used for comparison may not fully account for all real-world variations.