Course detail

CAD in Communication Subsystems

FEKT-BRKSAcad. year: 2017/2018

Students become familiar with principles of passive and active microwave circuits simulation using software Ansoft HFSS and Designer. The Ansoft HFSS is an EM simulator intended for solving arbitrary 3D passive structures. Ansoft Designer is intended for circuit models and planar structures including active components. The course is terminated by an individual project, where students design a model of selected microwave circuit.

Learning outcomes of the course unit

The graduate is able to:
- understand principles of waveguides, coaxial and microstrip transmission lines, waveguide and planar antennas, power splitters, filters, microwave amplifiers
- design these structures using a simulation software
- understand principles of selected optimization techniques


Knowledge of bachelor-degree mathematics and physics is required. Previous passing courses High frequency techniques and Microwave techniques is an advantage.


Not applicable.

Recommended optional programme components

Not applicable.

Recommended or required reading

RAIDA, Z. Počítačové řešení komunikačních systémů. Skrtiptum FEKT VUT. (CS)
VÁGNER, P. Vysokofrekvenční technika. Skripta FEKT VUT, 2013. (CS)
HANUS, S., SVAČINA, J. Vysokofrekvenční a mikrovlnná technika. Skripta FEKT VUT v Brně, 2002, ISBN: 80-214-2222-X (CS)
RADMANESH, M. RF and Microwave Circuit Design Essentiales. AuthorHouse, Bloomington, IN, 2009. (EN)

Planned learning activities and teaching methods

Teaching methods include lectures and computer laboratories. Course is taking advantage of e-learning (Moodle) system. Students have to elaborate a single project/assignment during the course.

Assesment methods and criteria linked to learning outcomes

Students can obtain up to 40 points for the activity in the computer labs. Two tests during the semester are honored by max. 24 points and final individual project is honored by max. 36 points.

Language of instruction


Work placements

Not applicable.

Course curriculum

1. Ansoft HFSS and common principles of fullwave electromagnetic simulators.
2. Microwave transmission lines (waveguides, coaxial and microstrip transmission lines).
3. Selected types of microwave antennas.
4. Antennas with parabolic reflector and properties of the feed.
5. Power splitters and combiners, directional couplers.
6. Lowpass filters.
7. Bandpass filters.
8. Linear model of an amplifier. Design of LNA.
9. Optimization - terms, optimality conditions, objective aggregation, gradient methods.
10. Optimization - stochastic methods, one- and multi-objective methods.
11. Consultation of individual projects.
12. Presentation of individual projects.


Aim of the course is to make students familiar with microwave circuits and their design and modeling using computer programs.

Specification of controlled education, way of implementation and compensation for absences

Evaluation of activities is specified by a regulation, which is issued by the lecturer responsible for the course annually.

Classification of course in study plans

  • Programme EEKR-B Bachelor's

    branch B-EST , 3. year of study, summer semester, 6 credits, optional specialized

  • Programme EEKR-CZV lifelong learning

    branch ET-CZV , 1. year of study, summer semester, 6 credits, optional specialized

Type of course unit



26 hours, optionally

Teacher / Lecturer

Exercise in computer lab

39 hours, compulsory

Teacher / Lecturer