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  EWireless Electromagnetic Technology (6-9cr)

=> Documentation 

prof. Gaetano Marrocco


Scheduling:  semester

Year 1°: Master in Internet and Information Engineering (9CFU)

Year 2° Master in Medical Engineering (6CFU)

Year 2° Master in Electronic Engineering (6CFU)



Program

1. INTRODUCTION TO ANTENNAS
Essential chronology. Radiation mechanisms. Types of antennas.

2.ANTENNA BASICS
Introduction to transmission lines.
Sources of electromagnetic field: impressed, equivalent, images.
Radiation Potentials.
Green Function.

3. ELEMENTARY ELECTRIC AND MAGNETIC DIPOLES
Static and dynamic regimes (reactive and radiating field).
Hertzian dipoles.

4. DISTRIBUTED SOURCES
Fraunhofer and Fresnel radiation regions.
Propagation as the two-dimensional spatial Fourier Transform.
Radiation parameters: effective length, radiation intensity, directivity, gain. efficiency, beamWidth, polarization.
Equivalent-circuit parameters: input impedance, reflection coefficient, bandwidth, realized gain.

5. COMPUTED AIDED ELECTROMAGNETICS
Integral equations of the Electromagnetic Scattering: wire scatterers (Pocklington, Hallen equations), extended scatterers.
Method of Moments: theory and FEKO computer solver.

6. BROADCASTING ANTENNAS
Half-wave dipole antenna: transmission-line equivalent current, input impedance, series and parallel resonance, radiation pattern, beamwidth, directivity.
Folded dipoles, T-match, Gamma Match.
Quarter-wave monopole: Marconi antenna.
Loop antennas: transmission-line equivalent, small loop, large loop, series and parallel resonance, radiation pattern, beamwidth, directivity.
Frequency tuning, feeding techniques.

7. ARRAYS AND BEAMSHAPING
Arrays of Antennas: Array factor, multiplication principle, total gain, taper efficiency.
Uniform linear arrays: visibility windows, radiation pattern, beamwidth, phased beam, broadside and endfire arrays, electronic beam scanning, greating lobes, arrays of dipoles, beamforming networks (tree and bus).
Uniform two-dimensional array: beam scanning.
Non-Uniform array synthesis: binomial illumination, Tchebyshev illumination, Fourier beam-shaping synthesis,  Alternate Protection synthesis

8. ANTENNAS FOR PERSONAL DEVICES
The microstrip. The slot.
Integrated Patch antennas: transmission-line model, impedance matching, substrates, radiation pattern, efficiency and bandwidth,  PIFA antennas.
Miniaturization techniques: slots, shorting pins, meandering.
Broadbanding: multi-layer antennas, stacked configurations.
Circular polarization: double-ports, single port configuration.

9. WIRELESS COMMUNICATION LINKS
Antennas in receiving mode: Friis formula,  radar cross-section, radar equation.
Introduction to Radiofrequency Identification.

end 6CFU
==========

10. BROADBAND ANTENNAS
Thick dipoles: biconical antennas,  Bow-tie, cylindrical antennas.
Self-scaling antennas: log-periodic antenna, logarithmic spiral, fractals antennas.

11. HIGH GAIN ANTENNAS
Yagi-Uda array.
Aperture antennas: Fourier transform representation, uniform rectangular aperture, uniform circular aperture, Array equivalence.
Reflector Antennas: ray-optic approximation, parabolic reflectors, system gain.




Exam modality: team project + interview
Suggested Texbook

 C. Balanis, “Antenna Theory: analysis and design”, John Wiley & Sons, 1997 (ISBN 0-471-59268-4)

 R.E. Collin, “Antennas and Radiowave Propagation”,McGraw-Hill, 1985, (ISBN-0-07-011808-6)

   J.D. Krauss, R.J.Marhefka, “Antennas for all applications”, McGraw-Hill (ISBN 0-07-46321


Lecture Notes (Italian)


Applicazioni
Introduzione
01. Richiami sulle Linee di Trasmissione
02. Sorgenti di Campo Elettromagnetico
03. Potenziali Elettrodinamici
04. Dipoli elementari
05. Irradiazione da Sorgenti Estese
06. Parametri delle Antenne
07. Antenne a filo (I)
08. Antenne a filo (II)
09. Antenne a loop
10. Calcolo automatico delle antenne (CAD)
11. Array (I)
12. Array (II)
13. Antenne Integrate (l patch)
14. Antenne Integrate (II): Integrazione su terminali mobili
15. Antenne Integrate (III): Esempi
16. Antenne Integrate (IV): banda larga e polarizzazione circ.
17. Misura dei parametri d'Ingresso delle Antenne


 18. Comunicazioni a larga banda
19. Sistemi Short Range (I): fondamenti
20. Sistemi Short Range (II): RFID
21. Sistemi per comunicazioni satellitari

 

Additional Dcumentation Industriali delle MicroondeCorsi:  Applicazioni

1.    “Ascoltare” le onde
2.    Foto e Data Sheets di Antenne a Dipolo
3.    Progetto finale 2011
4.    Esercitazione: progetto patch con FEKO (video)
5.    La tecnologia Near Field Communication (NFC) –video
6.    Internet of Things: il futuro di Internet: da Current TV- video (173 MB)