Antennas and Wave Propagation

Module Number: EI7308

Duration: 1 Semester

Occurence: Summer semester

Language: English

Number of ECTS: 6

Staff

Professor in charge: Thomas Eibert

Amount of work

Contact hours: 75

Self-studying hours: 105

Total: 180

Description of achievement and assessment methods

The examination is adapted to the learning outcomes and consists of a written examination of 90 min duration.In the written examination, students demonstrate by answering questions under time pressure and with limiited helping material (10 pages or 5 sheets of self-generated documentation, mathematical equation book, non-programmable pocket calculator) the theoretical knowledge of antennas and wave propagation. By solving analysis and design problems, they demononstrate the understanding of relevant physical effects and design principles.During the semester, students get the opportunity to participate in voluntary project and design tasks, in which they can solve different analysis and design problems in more detail. These project tasks can be used to improve the final grade. The final grade consists of the grade of the written exam (100%).The overal grade for the project tasks will count with 20% of the final grade, if the average grade of the written exam (80%) and of the project task grade (20%) will lead to an improvement of the grade.

Recommended requirements

Vector analysis, theoretical principles of electrical engineering.

Contents

Antenna basics: Far-field and circuit properties; Wave propagation: deterministic and empirical methods based on far-field considerations, ray-tracing including reflections and diffractions; Electromagnetic concepts: Maxwell equations, Radiation from sources, Huygens' and reciprocity principles; Utilization of electromagnetic concepts and nuermical methods for analysis and design of antennas;Hertzian and Fitzgerald dipoles, wire antennas, aperture antennas, printed antennas, ultra-wideband antennas, antenna arrays, leaky-wave antennas;Antenna applications;

Study Goals

At the end of the module students are able to understand the electromagnetic concepts describing antenna radiation and reception. They are able to analyze and design radio links. They understand working mechanisms of linear antennas, aperture antennas, ultra-wideband antennas, antenna arrays and leaky-wave antennas. They are able to evaluate antenna radiation properties by applying electromagnetic concepts and approximation methods. They know important antenna applications.

Teaching and learning methods

Learning method:In addition to the individual methods of the students consolidated knowledge is aspired by repeated lessons in excercises and tutorials.Teaching method:During the lectures students are instructed in a teacher-centered style. The tutorials are held in a student-centered style.Additional project tasks for analysis and design of cicuits give the students the opportunity to apply their knowledge acquired during the lecture and the tutorials and to further deepen the understanding of the taught materials.

Media formats

The following types of media will be used and also made available online:- presentations- lecture notes- tutorial problems- project tasks for analysis and design of amplifiers and oscillators

Literature

Balanis C.A.: Antenna Theory and Design, 3rd Ed., John Wiley & Sons, 2005- Lo, Y.T., Lee, S.W.: Antenna Handbook, Vol. I,II,III, Van Nostrand Reinhold, 1988