Course detail

Antennas and Lines

FEKT-BKC-ANTAcad. year: 2022/2023

Mobile communication systems are based on the propagation of electromagnetic waves in the environment. Waves are transmitted and received by proper antennas. Antennas have to be completed by a suitable transmission line with high-frequency transmit circuitry and receive one. Wave propagation, antennas and transmission lines can be numerically modeled in computer programs. Lectures are aimed to present the described topics to the beginners in the field.

Language of instruction

Czech

Number of ECTS credits

6

Mode of study

Not applicable.

Guarantor

prof. Dr. Ing. Zbyněk Raida

Department

Department of Radio Electronics (UREL)

Learning outcomes of the course unit

The graduate is able (1) understand fundamental properties of electromagnetic field, (2) evaluate propagation of waves in free space and on transmission lines, (3) exploit basic methods for the analysis of antennas and transmission lines, (4) provide overview of properties of various types of transmission lines, (5) technically apply antennas and transmission lines.

Prerequisites

Knowledge of bachelor mathematics and physics is requested.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Lectures, PC and laboratory exercises, individual project.

Assesment methods and criteria linked to learning outcomes

6 x 2 body za počítačová cvičení (k zápočtu min. 6 bodů)
6 x 3 body za kontrolní testy (k zápočtu min. 12 bodů)
10 bodů za samostatný projekt (k zápočtu min. 5 bodů)
60 bodů za zkoušku (ústní + písemná)

Course curriculum

1. Computation of Maxwell equations.
2. Propagation of electromagnetic plane wave in free space. Cylindrical and spherical wave.
3. Propagation of TEM wave along the transmission line. Parameters of the transmission line.
4. Transforming impedance by the transmission line. Smith chart.
5. Impedance matching
6. Electromagnetic wave propagation in waveguide.
7. Elementary antennas (elementary dipole, elementary surface). Parameters of antennas.
8. Antenna arrays. Computing parameters of antenna arrays in MATLAB.
9. Specification of individual projects, examples of solution.
10. Wire antennas and their modeling.
11. Planar antennas and their modeling.
12. Fundamentals of computational electromagnetics.
13. Discussion of individual projects.

Work placements

Not applicable.

Aims

Lectures are focused on presenting basics of electromagnetic field theory and practicing analysis of antennas and transmission lines.

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.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

NOVÁČEK, Z. Elektromagnetické vlny, antény a vedení. Příklady. Elektronický studijní text. https://www.feec.vutbr.cz/et/skripta/urel/Elektromagneticke_vlny_anteny_a_vedeni_Priklady_S.pdf (CS)

Recommended reading

Not applicable.

Elearning

eLearning: currently opened course

Classification of course in study plans

  • Programme BKC-EKT Bachelor's 2 year of study, summer semester, compulsory

Type of course unit

 

Lecture

26 hod., optionally

Teacher / Lecturer

prof. Dr. Ing. Zbyněk Raida

Syllabus

Waves in free space, plane wave and spherical wave, interference
TEM waves on transmission lines, voltage and current distribution
Impedance transformation.
Smith chart and its application
Impedance matching
Transmission lines and their applications
Radiation of electromagnetic waves
Radiation of antennas and arrays, impedance of antennas, parameters
Kinds and types of antennas, their parameters and applications
Propagation of electromagnetic waves along earth surface
Radiocommunication, kinds of links
Waves in metal waveguides
Waves in inhomogeneous medium, reflection and diffraction

Exercise in computer lab

13 hod., compulsory

Teacher / Lecturer

prof. Dr. Ing. Zbyněk Raida

Syllabus

Propagation of plane wave in homogeneous medium
Voltage and current distribution and power on trasmission line with TEM wave
Impedance transformation, Smith chart and its application, impedance matching
Radiation and impedance of linear antennas, antenna arrays radiation
Calculation of trasmission line parameters, resonators and their applications
Propagation along the earth surface
Waves in waveguides, Fresnel´s diffraction
Reflection of waves

Laboratory exercise

13 hod., compulsory

Teacher / Lecturer

Ing. Vojtěch Bednarský

Syllabus

Measurement of coaxial transmission line parameters
Measurement of reflexion factor and input impedance
Input impedance measurement of linear antennas
Power on transmission line
Impedance transformation
Measurement of wavelength and reflection factor of waveguide load
Antenna radiation pattern measurements
Baluns and diplexers

Elearning

eLearning: currently opened course