Entry requirements

Electromagnetic field theory

Learning outcomes

On completion of the course the student shall be able to:

- classify wave solutions to Maxwell's equations in the groups TEM, TE and TM, and account for which wave solutions that are relevant for the different types of guiding structures used for microwave transmission

- explain and describe transmission lines both from a field point of view and by means of a circuit model, including the concepts characteristic impedance, propagation constant and attenuation factor

- calculate the fields, the guide wave length, cut-off frequency and attenuation factor for the dominant mode in a rectangular wave guide

- calculate the standing wave pattern on a terminated transmission line, and explain the concepts local impedance, local reflexion coefficient and standing wave ratio

- use the Smith chart both as impedance diagram and admittance diagram, and read local impedance, admittance, reflexion coefficient and standing wave ratio in the diagram

- explain the meaning of the concepts N-port network, reciprocity, impedance matrix, scattering matrix and transmission matrix

- design matching networks in the form of lumped L-networks, single stub networks and quarter wave transformer

- calculate resonance frequencies and Q-value for rectangular and circular cylindrical cavities and for open- or short-circuited transmission line resonators

Content

Transmission line theory. The Smith chart. Waveguide theory. Stripline and Microstrip. Losses and damping in waveguides and transmission lines. Microwave network analysis. Equivalent voltages and currents. Impedance matrix. Scattering matrix. Methods for impedance matching. Microwave resonators. Various passive microwave components.

Laboratory work: Rectangular waveguide, Network analyser, Matching of a load.

Instruction

Lectures, lessons, laboratory work.

Assessment

Written examination at the end of the course. Passed laboratory course is also required.