Unit RADIO FREQUENCY ENGINEERING
- Course
- Computer science and electronic engineering
- Study-unit Code
- 70001109
- Curriculum
- Ingegneria elettronica
- Teacher
- Paolo Mezzanotte
- Teachers
-
- Paolo Mezzanotte
- Hours
- 90 ore - Paolo Mezzanotte
- CFU
- 9
- Course Regulation
- Coorte 2022
- Offered
- 2024/25
- Learning activities
- Caratterizzante
- Area
- Ingegneria elettronica
- Academic discipline
- 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.