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FEKT-BPC-EVAAcad. year: 2024/2025
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.
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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
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 matchingRadiation 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 diffractionReflection of waves