Teachers: Ing. Pasquale Tommasino, Prof. Stefano Pisa
SUBJECT OF THE COURSE (9 CFU)
INTRODUCTION: Examples of telecommunication and radar systems.
RF OSCILLATORS: resonant circuits, quality factors and losses, RLC networks around resonance, the frequency stability coefficient, quartz as circuit element, phase noise. Feedback oscilaltors: Colpitz, Clapp, Pierce and quartz oscillators. Negative resistance oscillators: Steady state and triggering conditions, the Nyquist method for oscilaltors, ceramic resonator oscillator (CRO), dielectric resonator oscillators (DRO) .
RF AMPLIFIERS: stability, stability circles, Rollet factor, transduction gain, design of amplifiers starting from unconditionally stable transistors, realization of matching networks with distributed and lumped elements, design of amplifiers starting from conditionally stable transistors, feedback networks, noise parameters, design of low noise amplifiers.
Power amplifiers: main parameters, design of power amplifier of class A and B.
RF FILTERS: Design of filters with the low pass band prototype technique, microstrip realization of low pass ilters.
RF MIXERS: main parameters. Mixer with schottky diodes: nonlinear model of Schottky diodes, noise in diodes, polarization techniques, single diode mixer, mixer, balanced mixers.
Mixers with transistors: BJT, JFET, IF amplifiers and gain control-
PLL: basic operation, response to a phase and frequency error, stability, design of PLL.
MODULATORS AND DEMODULATORS: AM, SSB, frequency modulators and demodulators.
CAD: examples with Microwave office of all studied circuits.
CAD:
Introduction to circuit CAD, resonant circuits,
Colpitts network, transistor polarization (E00)
Colpitts Oscillator Linear Nonlinear Analysis (E01)
Linear analysis quartz oscillator, Non-linear quartz oscillator (E02)
CRO ceramic oscillator (E03)
Gain amplifier, stability, project adaptation networks for the GTMAX (E04)
Design of power amplifiers with MWO, load pull and compression point (E05)
Filter design with MWO, Planar filters (E06)
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Reception: Mon.-Ven. prior telephone booking: tel. 0644585842 or mail:
stefano.pisa@uniroma1.it
Reception: Mon.-Ven. prior telephone booking: tel. 0644585363 or mail:
pasquale.tommasino@die.uniroma1.it
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02_NEGATIVE RESISTANCE OSCILLATORS
07_MIXER WITH TRANSISTORS AND MODULATORS
00_MWO EXERCISE: RESONANT CIRCUITS
01_MWO EXERCISE: COLPITTS OSCILLATOR
02_MWO EXERCISE: QUARTZ OSCILLATOR
03_MWO EXERCISE: CERAMIC OSCILLATOR
04_MWO_EXERCISE: GAIN_AMPLIFIER
05_MWO EXERCISE: POWER AMPLIFIER
Usefull books:
Pozar, “Microwave Engineering”, John Wiley & Son 1998.
Collin, “Foundations for Microwave Engineering”Mc Graw Hill 1992
Roddy, “Microwave Technology”, Prentice-Hall 1986
Bahl, Bhartia, “Microwave Solid State Circuit Design”, John Wiley & Son 2001
Vendelin, Pavio, Rohde, “Microwave Circuit Design”, John Wiley & Son 1990.
Sweet, “MIC & MMIC Amplifier and Oscillator Circuit Design”, Artech House 1990
Mass, “Microwave Mixers”, Artech House 1986
Gentili, “Microwave Amplifiers and Oscillators” North Oxford 1986
Rizzi, “Microwave Engineering-Passive Circuits”, Prentice-Hall 1988