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ECTS Course Overview

High Frequency Electronics

* Exchange students do not have to consider this information when selecting suitable courses for an exchange stay.

Course Unit Code440-4112/02
Number of ECTS Credits Allocated4 ECTS credits
Type of Course Unit *Optional
Level of Course Unit *Second Cycle
Year of Study *
Semester when the Course Unit is deliveredSummer Semester
Mode of DeliveryFace-to-face
Language of InstructionCzech, English
Prerequisites and Co-Requisites Course succeeds to compulsory courses of previous semester
Name of Lecturer(s)Personal IDName
GAJ10Dr. Ing. Libor Gajdošík
The subject is focused on the basic electronic circuits in the radio frequency area. Firstly are expained the basic types of the modulations and their properties, the properties of the real devices at high frequencies, selective filters used in the radio frequency area. After that are explained the circuits of the electronic oscillators, mixers, high frequency amplifiers, frequency multipliers, modulators and demodulators and their possibilities of the using in radio receivers and transmitters.
Learning Outcomes of the Course Unit
To make familiary the students with the basic electronic circuits used in the radio frequency area.
Course Contents

1. Active and pasive devices, equivalent circuits with parasitic elements.
2. Resonant circuit and its RF properties. Basics of resonant measuring instruments.
3. RF filters.
4. RF wideband and narrowband amplifiers. Miller capacitance. Parasitic coupling compensation.
5. Function blocks, elementary types of RF oscillators.
6. Modulations of AM, FM, PM. Heterodyne, intermediate frequency, image frequency.
7. Y and S parameters. Definitions, Conversions.
8. Frequency mixers and frequency multipliers. Amplitude limiters.
9. Function blocks, modulators, demodulators, Gilbert cell.
10. RF operational amplifirs, CFA, OTA, current and voltage feedback.
11. Microwave circuits, waveguides, microstrips, YIG.
12. RF circuit analyse methods. Smith chart derivation.
13. Special devices for RF technics, SRD, HEMT, IMPATT, TRAPATT, TWT, klystron, magnetron.
14: Noise in RF circuits, elementary terms.


1. Safety instructions. Calculations of device equivalent circuits. Project assignment - RF oscillator design.
2. Laboratory exercise. Measurement of frequency properties of coil, condenser and resonant circuit.
3. Laboratory exercise. Measurement of frequency characteristic of coupled resonant circuit and ceramic filter.
4. Laboratory exercise. Measurement of the Miller capacitance influence to the frequency characteristic of amplifier.
5. Theory exercise. Antialiasing filter design.
6. Laboratory exercise. Verification of AM and FM properties by generator and FFT oscilloscope.
7. Test 1.
8. Laboratory exercise. Measurement of frequency mixer and frequency multiplier by FFT oscilloscope.
9. Theory exercise. Criteria of stability in circuits. Examples.
10. Laboratory exercise. Frequency characteristic measurement of OTA based amplifier.
11. Laboratory exercise. Measurement in waveguide at 10 GHz.
12. Evaluation of assigned project.
13. Test 2.
14. Credit.
Recommended or Required Reading
Required Reading:
Storey N.: Electronics : a systems approach, Pearson Education, Harlow, 2013
Žalud V.: Moderní radioelektronika, BEN Praha, 2008
Gajdošík L.: Počítačová identifikace obvodů, VŠB Ostrava, 2008
Recommended Reading:
Tietze U., Schenk Ch., Gamm E.: Electronic circuits : handbook for design and application, Springer, Berlin, 2008

Prokeš A.: Rádiové přijímače a vysílače přednášky, VUT Brno, 2002
Syrovátka B.: Rádiové přijímače a vysílače, ČVUT Praha, 2005
Syrovátka B.: Elektronika a přenos zpráv, ČVUT Praha, 1983
Syrovátka B.: Teorie a stavba elektronických zařízení, ČVUT Praha, 1976
Planned learning activities and teaching methods
Lectures, Tutorials, Experimental work in labs
Assesment methods and criteria
Tasks are not Defined