Radiation and guided waves
Objectives and Contextualisation
1. To use the formulation of Electromagnetic fields with agility, moving from the temporal domain to the phasor domain and vice-versa.
2. To understand the meaning of fields boundary conditions.
3. To use the general expression of the wave equation for the electric field in the frequency domain. Know the expression of the plane wave solution. Understand parameters such as phase constant, wavelength and phase velocity. Obtain the expression of the magnetic field associated with the wave from the electric field and vice versa. As well as the propagation direction vector.
4. To calculate the power density from the amplitude of the associated electric field. Manage the concept of power density. Analyze the type of polarization that a wave presents by studying the orientation of the electric field vector.
5. To manage the concept of reflection and transmission in cases of incidence perpendicular to the interface plane between dielectrics and between dielectric and conductor. Handle Snell's Laws in terms of the reflectance and refraction phenomena of the wave, applied to the problem of oblique incidence of the electromagnetic wave in the interface surface of two dielectric media
6. Analyze electrical circuits when the wavelength of the signal is comparable to the electrical size of the circuit. Know the distributed model of the transmission line by means of concentrated elements.
7. Know the general expression of the wave equation in voltages and currents in the phasor domain, as well as the expression of the solution. And relate parameters such as characteristic impedance, phase constant, wavelength and phase velocity. Learn to handle the approaches to lines of low losses but finite, and line without losses.
8. Understand that the presence of the reflected wave causes the appearance of the standing wave. Knowing how to propose the standing wave solution with open circuit and short circuit load impedance condition. Know how to shift the reflection coefficient and the impedance along a transmission line.
9. To calculate the power along the line. To understand that the power is constant along the line even if the voltage is not due to reflections.
10. To use the expressions that relate the elements of the circuital model of the transmission line with the geometry of the coaxial, microstrip and stripline lines.
Competences
Electronic Engineering for Telecommunication
Communication
Develop personal work habits.
Develop thinking habits.
Learn new methods and technologies, building on basic technological knowledge, to be able to adapt to new situations.
Resolve problems with initiative and creativity. Make decisions. Communicate and transmit knowledge, skills and abilities, in awareness of the ethical and professional responsibilities involved in a telecommunications engineer's work.
Work in a team.
Telecommunication Systems Engineering
Communication
Develop personal work habits.
Develop thinking habits.
Learn new methods and technologies, building on basic technological knowledge, to be able to adapt to new situations.
Resolve problems with initiative and creativity. Make decisions. Communicate and transmit knowledge, skills and abilities, in awareness of the ethical and professional responsibilities involved in a telecommunications engineer's work.
Work in a team.
Learning Outcomes
Adapt to multidisciplinary and international surroundings.
Adapt to multidisciplinary environments.
Communicate efficiently, orally and in writing, knowledge, results and skills, both professionally and to non-expert audiences.
Define and calculate the fundamental parameters of a communications system that is related with the transmission and reception of waves.
Define the propagation and transmission mechanisms of electromagnetic and acoustic waves, as well as their corresponding transmission and receiving devices.
Develop the capacity for analysis and synthesis.
Manage available time and resources.
Manage available time and resources. Work in an organised manner.
Prevent and solve problems.
Reproduce experiments related with the propagation of waves and extract relevant information.
Resolve problems related with the propagation and transmission mechanisms of electromagnetic and acoustic waves, as well as their corresponding transmission and receiving devices.
Use the basic instruments of a communications laboratory.
Work cooperatively.
Content
1. INTRODUCTION
2) OBJECTIVES
3) BIBLIOGRAPHY
4) INTRODUCTION TO ELECTROMAGNETISM. ELECTROMAGNETIC SPECTRUM
5) MAXWELL EQUATIONS IN DIFFERENTIAL AND INTEGRAL FORM.
6) BOUNDARY CONDITION ON THE SURFACE OF SEPARATION BETWEEN TWO MEDIUM.
7) UNIDIMENSIONAL WAVE EQUATION.
8) PLANE WAVES IN MATERIAL MEDIA
9) PROPAGATION OF THE PLANE WAVE.
10) GENERAL SOLUTION OF PLANE WAVE.
11) POWER ASSOCIATED TO ELECTROMAGNETIC WAVE. VECTOR OF POYNTING.
12) POLARIZATION OF PLANE WAVES.
13) REFLECTION OF PLANE WAVE IN SCENARIOS OF CHANGE OF MEDIUM.
14) OBLIQUE INCIDENCE ON THE INTERFACE OF SEPARATION BETWEEN TWO DIELECTRIC MEDIA.
15) INTRODUCTION TRANSMISSION LINE
16) OBJECTIVES
17) THEORY OF TRANSMISSION LINES. HELMHOLTZ EQUATIONS
18) LOSSLESS TRANSMISSION LINE.
19) LOADED TRANSMISSION LINE. STANDING WAVE.
21) ANALYSIS OF THE FIELDS IN THE TRANSMISSION LINE. MANUFACTURING TECHNOLOGIES.
22) SMITH CHART.
23) MATCHING NETWORKS.
24) CONDUCTOR WAVE GUIDES: RECTANGULAR AND CIRCULAR SECTION.
25) SELF-EVALUATION EXERCISES.
26) SOLUTION
Presential
TRUE
Radiation and guided waves
Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or HaDEA. Neither the European Union nor the granting authority can be held responsible for them. The statements made herein do not necessarily have the consent or agreement of the ASTRAIOS Consortium. These represent the opinion and findings of the author(s).
