20810342 - MICROWAVE DEVICES FOR WIRELESS SYSTEMS

The aim of the course is to provide the fundamentals of the design of circuit and components for wireless systems in the up-to-date technologies. The course deals with the techniques for the design of wireless devices, also through specialistic electromagnetic software for the simulation of integrated microwave circuits and in the millimeter frequency band, with reference to active and passive components. Some emerging applications will be considered, as circuits in SIW technology and systems for wireless power transfer. Applications of the radar systems and of the radar for the sensing of buried objects (Ground Penetrating Radar) will dealt with.
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Programme

Introduction to wireless systems: standards and frequency bands. Standards for mobile communications, wireless LAN, and bluetooth. Emerging standars in the millimeter frequency band for wireless outdoor and indoor links. Applications to wireless power transfer. Standards for radar systems.
Microwave Integrated Circuits (MIC) e Monolithic Microwave Integrated Circuits (MMIC). Transmission line theory and matching techniques. Integrated circuits in microstrip line: technologies and design formulas for microstrip lines. Microstrip impedances. Microstrip components: two ports; thee ports, resistive dividers Wilkinson power divider; four ports, directional couples, quadrature hybid, coupled-line coupler, rat-race. Printed antennas for MIC. Simulation of microstrip components with electromagnetic software.
Microwave circuits in Substrate Integrated Waveguide (SIW) for millimeter wave applications. Design of a SIW waveguide. SIW components.

Design and simulation of microstrip components through dedicated electromagnetic software.

Microwave amplifiers: stability, gain and matching.

Radar systems. Radar equation: localization of the target, and radar cross-section evaluation. Pulsed radars and frequency-stepped radar. Radar architecture. The Ground Penetrating Radar; application to buried object detection.


Core Documentation

Material delivered by the teacher.

R.E. Collin, Foundations for Microwave Engineering, McGraw Hill, 1992.
D.M. Pozar, Microwave Engineering, Wiley, 1998.

Type of evaluation

Otal examination and presentation of a project.