Course detail
Antennas and Applications
FEKT-MASVAcad. year: 2012/2013
Lectures and exercises:
" Quarter-wave dipole and LW and MW propagation
" Modifications of wire dipole on SW band
" Antennas for VHF and UHF bands
" Multi-band antennas on UHF and microwaves
" Wide-band antennas on UHF and microwaves
" Circularly-polarized antennas
" Directional antennas for UHF and microwaves
" Antennas for special applications
" Miniaturization of antennas
" Construction parts of antennas
" Measurements of antennas
" Antenna matching circuits
Laboratories schedule:
" Directivity measurement in free-space. Directivity measurement in anechoic chamber. LPDA vector analyzer measurement.
" Magnetic loop antenna, resonant frequency, impedance and power matching.
" Current distribution on linear antenna.
" Impedance matching on SW antennas, Measurement of matching circuits.
" Impedance matching of microstrip antenna
" Circularly polarized antennas, directivity pattern measurement.
" Horn antenna.
Comments:
The aim of the subject is focused to practical aspects of the antennas techniques from ones kilohertz to tenth gigahertz. The students can design a wire and planar antennas, which can meet in daily practice. In computer practice students designed their own antennas, which will be manufactured and measured. In laboratories, the knowledge of impedance, directivity pattern, quality factor and polarization is presented. Directivity pattern of the antennas is in anechoic chamber measured.
Language of instruction
Number of ECTS credits
Mode of study
Guarantor
Department
Learning outcomes of the course unit
Prerequisites
Co-requisites
Planned learning activities and teaching methods
Assesment methods and criteria linked to learning outcomes
Course curriculum
" Modifications of wire dipole on SW band
" Antennas for VHF and UHF bands
" Multi-band antennas on UHF and microwaves
" Wide-band antennas on UHF and microwaves
" Circularly-polarized antennas
" Directional antennas for UHF and microwaves
" Antennas for special applications
" Miniaturization of antennas
" Construction parts of antennas
" Measurements of antennas
" Antenna matching circuits
Ionospheric propagation, design of ionospheric link and operational frequency
Tropospheric scattering communication, atmospheric losses, properties of microwave links
Calculation of field strength and reliability, conditions of radio communication
Broadcast antennas for LW and MW, short-wave antennas
Antennas for UHF band, matching and balancing
Microwave antennas. Extremely wideband antennas
Signal processing antennas, adaptive antennas
Electronic scanning, near-field measurement
Work placements
Aims
Specification of controlled education, way of implementation and compensation for absences
Recommended optional programme components
Prerequisites and corequisites
Basic literature
ČERNOHORSKÝ,D. a NOVÁČEK,Z. Navrhování rádiových spojů. Skriptum FE VUT Brno, Brno 1992. (CS)
Recommended reading
Classification of course in study plans
Type of course unit
Lecture
Teacher / Lecturer
Syllabus
Antenna array pattern, its optimization and synthesis
Impedance of linear antennas and of antenna arrays. Losses and efficiency of antenna
Radio waves reception, receiving antennas, polarization, antenna parameters
Propagation along the earth surface. Surface- and space-waves, obstacle losses
Ionospheric propagation, design of ionospheric link and operational frequency
Tropospheric scattering communication,atmospheric losses, properties of microwave links
Calculation of field strength and reliability, conditions of radio communication
Broadcast antennas for LW and MW, short-wave antennas
Antennas for UHF band, matching and balancing
Microwave antennas. Extremely wideband antennas
Signal processing antennas, adaptive antennas
Electronic scanning, near-field measurement
Exercise in computer lab
Teacher / Lecturer
Syllabus
Input impedance of antennas and of antenna arrays
Losses and efficiency of antenna. Antenna parameters
Design of antenna array, matching
Propagation of surface- and space-wave, obstacle losses
Sky-wave propagation, sky-wave link design
Radio wave reception, radio link design
Laboratory exercise
Teacher / Lecturer
Syllabus
Field strength of broadcast and TV transmitters
Properties of signal with fading
Current distribution on linear antennas
Properties of ferrite antenna
Splitters and balancing circuits
Radiation pattern and impedance of microwave antennas
Polarization properties of antenna