Transmission Lines and Waveguides, Participation in teaching 25.8.–12.10.2025 (0cr)

Content (course unit)

Core contentReview of plane waves and propagation of TEM waves. Review of interface conditions on material interfaces (esp. ideal dielectric and ideal conductor).Analysis of ideal and non-ideal transmission lines. Derivation of the Telegrapher equations starting from EM laws.Review of static EM problems to find the transmission line parameters.Use of simulation tools (Comsol) to find the transmission line parameters. Basics of use of EM field simulators.Rectangular waveguides, analysis of TE and TM waves in waveguides. Key parameters of rectangular waveguides.Cavity resonators. Analysis of losses and quality factor.Modeling assignment, use of numerical design methods and tools to determine and compare properties of a transmission line, modified waveguide structure, or modified cavity resonator.Laboratory work and experiments with basic transmission lines (coaxial cable, microstrip) and waveguides/cavities (e.g. excitation and quality factor of a cavity resonator).Complementary knowledgeQuasi-TEM waves, analysis of partially filled parallel-plate line.Cylindrical and coaxial waveguides. Dielectric waveguides. Alternatives to tune waveguides. Hybrid modes in waveguides.Orthogonality of eigenmodes, excitation of a cavity.Implementation of simulation algorithms, FDTD and FIT algorithms.