Radiation and electromagnetic propagation

Learning Results:

In this subject, the student must acquire the fundamental and technological concepts related to the transmission of electromagnetic energy between two points in space. Special emphasis will be placed on directional transmission, in free space, using antennas and on confined transmission using a guiding structure that minimizes radiation losses.

The specific competencies of the subject would be the following:

- Understand the basic concepts in antenna theory (retarded potentials, field/source relations, radiation diagrams, side lobe level, directivity and reciprocity theorem).

- Characterize the most common radiating elements (dipoles, helix and patches).

- Introduce the concept of antenna array and the resolution of synthesis problems.

- Discuss the Eikonal equation for the analysis and synthesis of reflector antennas.

- Review the theory of transmission lines.

- Understand the calculation of fields for a guiding structure.

- Characterization of rectangular and circular waveguides.

- Resolution of matching problems using the Smith chart.

- Introduction and characterization of resonant cavities.

RADIATION
1. Source/field relations of an isolated radiating element.
2. Radiating elements type I: dipoles, loops and helices.
3. Radiating elements type II: horns, slots and patches.
4. Linear and planar arrays: analysis and synthesis.
5. Reflectors.


PROPAGATION
6. Rectilinear guiding structures.
7. Impedance transformations and mismatch compensation.
8. Dielectric and ohmic losses in a rectangular waveguide.

RADIATION
- C. A. Balanis, "Antenna Theory. Analysis and Design", Second Edition, John Wiley & Sons, New York, 1997.
- A. Cardama, L. Jofre, J. M. Rius, J. Romeu, S. Blanch, M. Ferrando, "Antenas", Edicions UPC, Barcelona, 2002.
- R. S. Elliott, "Antenna Theory and Design, Revised Edition", John Wiley & Sons, New Jersey, 2003.
- W. L. Stutzman, G. A. Thiele, "Antenna Theory and Design", Second Edition, John Wiley & Sons, New York, 1998.
- J. D. Kraus, R. J. Marhefka, "Antennas. For All Applications", Third Edition, McGraw-Hill, New York, USA, 2002.

PROPAGATION
- Elliott, R. S., "An Introduction to Guide Waves and Microwave Circuits", Prentice-Hall International, Inc., New Jersey, 1993.
- Collin, R. E., "Foundations for Microwave Engineering", McGraw-Hill, Inc., New York, 1992.
- D. M. Pozar, "Microwave Engineering", 2nd Ed., New York: John Wiley & Sons, 1998.

Teacher's notes uploaded to the VirtualRoom

Specific skills:

- Acquire the basic knowledge for the characterization of radiant systems that allows the design of microwave antennas for radar applications and wireless communications (emphasizing satellite communications, cellular phones and wireless local area networks).

- Acquire the basic knowledge to examine the connection between guiding structures and electromagnetic waves that they support.

A course will be activated on the Moodle platform of the Virtual Campus, where all the information of interest to the student will be uploaded, as well as diverse teaching material.

The matter will be held during class lectures, using all the media to be available (waxed, transparencies and video projector) and make the subject enjoyable and training for the student. It will give the student all basic material for the study of matter.
Tutorships may be on site or online, if they are online they will require an appointment, which is also recommended for on site ones.

Class attendance is mandatory and continuous evaluation will be made by delivery of homework set and/or a monograph work related with recent literature of interest to the course.
There will be a final exam, on the date fixed by academic authorities, for students who have not passed the continuous assessment or those one that want to improve the qualification.

Evaluable activity
- Homework set => Weight until 40 %
- Monograph work => Weight until 60 %

Cast hours:

Theory: 20h
Seminaries: 10h
Tutorial: 1h
Personal work and another activities: 44h
Student total work: 75h

There are no explicit recommendations.