Topic 2 - Dividers and Couplers
In this section we study passive three-ports and four-ports. Prepare for the lecture and homework assignments by reading Chapter 7 in our course book (3rd or 4th ed.). You can skip Section 7.4 Waveguide Couplers and Section 7.9 Other Couplers!
The book discusses the main operating principles of three-ports and four-ports (and n-ports),
as well as typical practical applications in
RF circuits. Do not try to memorise formulas, but instead pay attention
to concepts such as reciprocity and coupling, as well as n-port-specific characteristics such as symmetry, but also general properties such as losses and bandwidth of microstrip-line n-ports.
Lecture slides from March 28 and 31, on passive components, i.e. power divider, directional coupler and hybrid.
The last 10 slides discuss the effect and models of discontinuities in microstrip lines, such as T-junctions, bends and impedance steps. Miscrostrip-line discontinueities are not covered very deeply in the course book, but instead in other excellent text books such as in Chapter 9 of Edwards and Steer: "Foundations for Microstrip Circuit Design" 4th ed. Wiley 2016, available in Aalto library as an e-book.
- Present your exercise return at the latest on 7.4.2022 during the contact session.