Mobile and Satellite Communications

Name (Acronym)

Mobile and Satellite Communications (MSC)
Contact E-mail

giacomo.oliveri@unitn.it
Teacher

OLIVERI Giacomo
Syllabus

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Institution

ELEDIA@UniTN
Study Program

Summer Course ELEDIA
Degree

Master
Language

English
Tracks

Fields and Waves ("Advanced EM Technologies"), Wave Manipulations and Artificial/Smart Materials, Wireless Technology and Network Planning

ABSTRACT

The course presents the fundamental principles of antennas and phased arrays in electromagnetic engineering, introduces the main figures of merit for characterizing complex radiating devices, and illustrates basic and advanced antenna analysis and synthesis methods for mobile and satellite applications, with main emphasis to communication scenarios. To this end, the course features theoretical, methodological, and practical aspects, and it introduces the most challenging applicative problems in these frameworks. The course consists in lectures and software/hardware emulator exercitations. Additional seminars given by relevant experts from other Universities, Agencies, and Companies will be advertised during the course

COURSE CONTENT

Part 1: INTRODUCTION AND FUNDAMENTALS OF ANTENNAS FOR MOBILE AND SATELLITE COMMUNICATIONS

Antenna Recap: Antenna definition and characterization
Types of radiating systems
Fundamental Parameters of antennas: Directivity, Antenna efficiency, Gain, Input impedance, Polarization and polarization loss, Radiation pattern, beam width angle, Effective isotropic radiated power (EIRP)
Far-field and near-field regions
Characterization of applicative scenarios for mobile and satellite communications
Received signal strength (Generalized Friis Equation). Characteristics and definitions of noise and antenna noise temperature
Effects of the propagation medium and environment
Examples of uplink and downlink antenna requirements in mobile and satellite scenarios

Part 2. MICROSTRIP ANTENNAS: ANALYSIS AND DESIGN

Introduction to microstrip antennas for mobile communications
Antenna configurations (patches, microstrip dipoles, printed slot antennas, microstrip traveling wave antennas)
Feeding techniques
Analytical models for analysis and design of mobile communications antennas
Design of rectangular patch antennas
Printed slot antennas
Techniques for bandwidth enhancement

Part 3. ANTENNA ELEMENTS FOR SATELLITE COMMUNICATIONS

Analysis of antennas for satellite communications
Aperture antennas, horn antennas, reflector antennas
Advanced antenna systems for satellite communications: reflectarrays
Applicative examples

Part 4. ANTENNA ARRAYS FOR MOBILE AND SATELLITE COMMUNICATIONS

Analysis of Antenna Arrays
Receiving array in the time domain
Array reception in the frequency domain and Array factor (AF)
AF features: nulls, maxima, and grating lobes
Visible and invisible range
AF of uniformly and non-uniformly weighted linear array
Planar and Circular arrays
Synthesis of Antenna Arrays
Formulation of pattern synthesis problems: field synthesis; power synthesis; mask-constrained power synthesis; external and internal array synthesis
Synthesis approaches: Test and trial approaches: amplitude tapering; z-transform
Amplitude and phase taper: Fourier synthesis; Schelkunoff’s method; Woodward-Lawson synthesis; least-square method
Analytical solutions: binomial taper; Dolph-Chebyshev taper; Taylor taper; Bayliss taper
Iterative procedure: iterative projection method
Introduction to advanced synthesis methods for sparse, clustered, and thinned arrays

TEACHING ACTIVITIES

Theoretical Lessons
e-Xam Self Assessment (each teaching class or periodically)
MATLAB Hands-On
e-Xam Final Assessment