Study-unit RADIO FREQUENCY ENGINEERING
| Course name | Computer science and electronic engineering |
|---|---|
| Study-unit Code | 70001109 |
| Curriculum | Ingegneria elettronica |
| Lecturer | Paolo Mezzanotte |
| Lecturers |
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| Hours |
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| CFU | 9 |
| Course Regulation | Coorte 2021 |
| Supplied | 2023/24 |
| Supplied other course regulation | |
| Learning activities | Caratterizzante |
| Area | Ingegneria delle telecomunicazioni |
| Sector | ING-INF/02 |
| Type of study-unit | |
| Type of learning activities | Attività formativa monodisciplinare |
| Language of instruction | Italian |
| Contents | Introduction, Transmission lines (review), Impedance matching (review), Guided propagation elements, Waveguides, Printed lines, Analysis of microwave networks, RF components and devices, CAD design of microwave devices, Measurement elements of microwave circuits |
| Reference texts | slides downloadable from: https://www.unistudium.unipg.it/unistudium/ R.Collin, “Foundations for Microwave Engineering”, McGraw-Hill, 1992. D.M Pozar, “Microwave Engineering”, J.Wiley & Sons, 3rd Edition, 2004. R. Sorrentino, G. Bianchi, “Ingegneria delle microonde e radiofrequenze”, McGraw-Hi ll 2006 |
| Educational objectives | the course provides the bases of knowledge of guided electromagnetic propagation, of high frequencies passive circuits. |
| Prerequisites | Electromagnetic Fields with lab and Physics B |
| Teaching methods | the teaching is delivered with lectures that make use of IT tools (recordings, virtual whiteboard in the cloud, projection of slides). The laboratory consists of two tools: CAD design and laboratory experimental tests |
| Other information | None |
| Learning verification modality | Oral interview on the program carried out (both for those who have chosen the 6 CFU course and for those who have chosen the 9 CFU course) or alternatively 3 written exoneration tests distributed throughout the quarter (the first at the end of March, the second at the end of April and the third at the end of the course). Each exemption test is dedicated to a specific part of the program and consists of 10 multiple choice questions, three open answer questions and an exercise divided into two / three parts (both for those who have chosen the 6 CFU course and for those has chosen the 9 CFU course). Design of one of the devices studied during the course, made with the aid of CAD tools (only for those who have chosen the 9 CFU course) |
| Extended program | Lessons: Introduction of the course, Frequency spectrum, subdivision of the spectrum into standardized bands; IEEE standard; Review: transmission lines, reflection and transmission coefficients; stationary wave ratio (ROS) definition; construction of the Smith chart; Review: Impedance matching: quarter wave adapter, single stub adapter. Adaptation by concentrated reactive elements; Small reflections theory; multi-section adapters (outline) Review of Maxwell's equations and related boundary conditions; Vector and differential operators - Electrodynamic potentials; TE, TM and TEM modes: link between potentials and EM fields; Variable separation technique; waveguide modes; Wave impedance; cutoff frequency; phase velocity and group velocity; fundamental mode and higher order modes; rectangular waveguide: TM and TE modes configuration, cutoff frequency; Rectangular waveguide: cutoff frequency; fundamental mode; exercises; rectangular waveguide: wave impedance; excitation mode TE10; losses and attenuation; exercises; Coaxial cable, fundamental way, characteristic impedance, exercises; equivalent voltages and currents; Circular guide: expressions of the EM field components for the TE11 mode; microstrip: effective dielectric constant, quasi-TEM mode, planar guide model; exercises; Impedances and admissions matrix; S matrix and related properties; Moving the reference planes; matrix S of a partially loaded n-port network; exercises; Microwave resonant circuits; Even and odd way excitement; 3-port microwave circuits; T and Y junction; resistive divider; wilkinson divider; exercises; Directional couplers: characteristic parameters and scattering matrix; Rat-race, Magic-T; attenuators; rotation phase shifter; Branch-line; Couplers with coupled lines. Laboratory: exercises: double Stub adapter; introduction to the Finite Differences in Time Domain (FDTD) method - calculation algorithms; introduction to the use of "fullwave" commercial software; CAD exercises; introduction to the use of the ADS circuit simulator; CAD exercises: double Stub adapter, Adaptation by means of concentrated reactive elements; CAD exercises: modeling of a rectangular guide; CAD project of a coaxial cable / waveguide transition; sizing of planar lines using software tools; architecture of an SA and a VNA; calibration techniques of a VNA; Measurements of microwave devices using a VNA; CAD design of a dual mode resonant cavity; CAD project of a Wilkinson divider. Example of design of an antenna beam forming network composed of Wilkinson dividers; CAD design of a coupler and 2-holes and a Rat-race. |