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 2022 |
| Supplied | 2024/25 |
| Supplied other course regulation | |
| Learning activities | Caratterizzante |
| Area | Ingegneria elettronica |
| Sector | ING-INF/02 |
| Type of study-unit | Obbligatorio (Required) |
| 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 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 . Design of one of the devices studied during the course, made with the aid of CAD tools |
| 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. |