|Title: ||Ασύρματες Επικοινωνίες|
|Lesson Code: ||321-7803|
|Theory Hours: ||3|
|Lab Hours: ||2|
|Faculty: ||Vouyioukas Demosthenes|
Electromagnetic waves in space. Introduction to antenna theory and radiation mechanism. Antenna radiation regions. Field and power antenna patterns. Basic antenna parameters (gain, directive gain, directivity, temperature, etc.). Antenna equivalent circuits (transmission and reception). Reciprocity theorem and far-field radiation. Linear, loop and aperture antennas. Antenna polarization and loss factor. A generic methodology for the calculation of radiated fields. Basic antenna examples (Hertz dipole, longer dipoles, λ/2 dipole, small loops, etc.). Linear, planar and circular arrays. Noise and antenna noise temperature. Tropospheric and ionospheric waves. Ground waves. Basic wireless propagation equations (Friis, reflection, scattering, diffraction). Applications and antenna measurements.
The course aims in understanding the electromagnetism theory and its applications in transmission of electromagnetic signals and the antennas. This course provides the necessary knowledge to understand the basic principles of the propagation of electromagnetic waves in free space and the antennas, which are the means of transmission in wireless communications, in an extensive presentation of the basic characteristics and the electromagnetic waves they produce. Thus, the students become familiar with the wave propagation phenomena caused to a real environment and the measurement methods used in practice.
The laboratory part of the course involves the performing of laboratory exercises for in-depth understanding and consolidation of the basic principles of transmission and reception of the wireless telecommunication systems, along with the familiarity of the laboratory instruments and antennas.
1. S. R. Saunders, A. Aragon-Zavala, «Antennas and Propagation for Wireless Communication Systems», PEDIO Publications, Scientific Editing.: Demosthenes Vouyioukas, 2016.
2. Α. Kanatas, G. Pantos «Wireless Communications», 2nd edition, Papasotiriou, 2017.
3. C. Capsalis, P. Kottis, «Antennas Wireless Links», Tziola, 2008.
1. J.D. Kraus, D.A. Fleisch, Electromagnetics with Applications, 5th Ed., McGraw Hill, 1999.
2. Herbert P. Neff, Introductory Electromagnetics, John Wiley & Sons, 1991.
3. C.A. Balanis, Antenna Theory: Analysis and Design, Second Edition, John Wiley, 1997.
4. J.D. Kraus, Antennas, Second Edition, Mc Graw-Hill, 1988.
5. T. Rappaport, Wireless Communications, Principles and Practice, Prentice Hall, 1996.
|Learning Activities and Teaching Methods |
The main teaching method followed is the traditional face-to-face lectures in class. The lectures are accomplished with the help of an electronic presentation program using portable computer with suitable tripod projection screen and projector. Interactive images and videos are used for adequate understanding of the main disciplines of the course. In addition, lectures are given where problems and exercises are solved. An asynchronous distance learning software is used (eclass). All the presentations, resolved exercises, multimedia material, notes, exercises to be delivered, laboratory exercises, announcements, links, etc. are updated frequently in eclass.
In the lab, students become familiar with laboratory equipment (antennas, transmitters, receivers) and carry out specific exercises for better understanding of the theory.
- Writing examination (70%)
- Projects (10%)
- Laboratory exercises (20%)
|Assessment/Grading Methods |
The students are assessed through final written exams, including the grade of the laboratory part of the course.
Lectures: 39 hours
Lab-based exercises: 20 hours
Personal study: 63 hours
Final examination: 3 hours
Total: 125 hours (5 ECTS)
|Language of Instruction|
|Greek, English (for Erasmus students)|
|Μode of delivery |