Course detail

# Antennas and Lines

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

English

Number of ECTS credits

6

Mode of study

Not applicable.

Offered to foreign students

The home faculty only

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 (fundamentals of the differential calculus and integral calculus) and physics (fundamentals of electrostatics, stationary magnetic fields and dynamic electromagnetic fields) 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

5 x 2 credits for labs (5 credits minimum to pass)
5 x 2 credits for PC exercises (5 credits minimum to pass)
5 x 4 credits for tests (10 credits minimum to pass)
10 credits for an individual project (5 credits minimum to pass)
50 credits of an exam (written and oral)

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. Planar antennas and its modeling.
11. Electromagnetic wave propagation in real environment.
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 wave propagation to students, and on practicing practical approaches to computing parameters 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

JORDAN, E. C., BALMAIN, K. G. Electromagnetic Waves and Radiating Systems. Prentice Hall 1968 (EN)

Not applicable.

eLearning

Classification of course in study plans

• Programme BPA-ELE Bachelor's

specialization BPA-ECT , any year of study, summer semester, elective

#### Type of course unit

Lecture

26 hours, optionally

Teacher / Lecturer

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 antennas and arrays, impedance of antennas, parameters
Kinds and types of antennas, their parameters and applications
Propagation of electromagnetic waves along earth surface
Waves in metal waveguides
Waves in inhomogeneous medium, reflection and diffraction

Exercise in computer lab

13 hours, compulsory

Teacher / Lecturer

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
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 hours, compulsory

Teacher / Lecturer

Syllabus

Measurement of coaxial transmission line parameters
Measurement of reflexion factor and input impedance, impedance transformation
Measurement of wavelength and reflection factor of waveguide load
Input impedance measurement of linear antennas