239 pubblicazioni classificate nel seguente modo:

A time domain solution for ESD field penetration through array of apertures into metallic enclosures
Proceedings of EMC Roma 96
Autore/i: Cerri, Graziano; DE LEO, Roberto; R., De Rentiis; MARIANI PRIMIANI, Valter
Editore: EMC Roma 96
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/80949

ESD indirect coupling modeling
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
Autore/i: Cerri, Graziano; DE LEO, Roberto; MARIANI PRIMIANI, Valter
Editore: IEEE / Institute of Electrical and Electronics Engineers Incorporated:445 Hoes Lane:Piscataway, NJ 08854:(800)701-4333, (732)981-0060, EMAIL: subscription-service@ieee.org, INTERNET: http://www.ieee.org, Fax: (732)981-9667
Classificazione: 1 Contributo su Rivista
Abstract: Electrostatic discharge (ESD) indirect coupling on electronic equipment is theoretically and experimentally investigated considering the effects for three typical structures: a coaxial cable, a multilayer PCB, and a metallic enclosure. The analytical approach is based on classical electromagnetic theory and is developed in a simple way that is easy to apply and accurate enough to give the designer a reliable estimation of the interference produced by an ESD event
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/25267

EMC introductory short course
Proceedings of the Mediterranean Electrotechnical Conference - MELECON
Autore/i: Cerri, Graziano; DE LEO, Roberto; MARIANI PRIMIANI, Valter
Editore: IEEE, Piscataway, NJ, United States
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Abstract: The paper presents a course thought to cover the fundamental aspects of the Electromagnetic Compatibility. Its length, three days, is particularly suitable for industry people, and in particular some experiment are organized to visualize the theoretical concepts: they are briefly described along the paper.
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/72897

Radiation modes of open microstrip with applications
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
Autore/i: Rozzi, Tullio; Cerri, Graziano
Classificazione: 1 Contributo su Rivista
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/72912

ESD Coupling to Coaxial Shielded Cables
Proceedings of the 11th Int. Zurich Symp. on EMC
Autore/i: Cerri, Graziano; DE LEO, Roberto; MARIANI PRIMIANI, Valter; A., Venturi
Editore: Swiss federal Institute of Technology
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/80957

ESD Coupling Between Microstrip Lines
Proceedings of the 11th Int. Zurich Symp. on EMC
Autore/i: Cerri, Graziano; DE LEO, Roberto; MARIANI PRIMIANI, Valter
Editore: Swiss Federal Institute of Technology
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/80958

Scattering matrix approach for frequency and time domain crosstalk analysis in multilayer PCBs
IEE PROCEEDINGS. SCIENCE, MEASUREMENT AND TECHNOLOGY
Autore/i: DE LEO, Roberto; Cerri, Graziano; MARIANI PRIMIANI, Valter
Editore: Institution of Electrical Engineers:Michael Faraday House, 6 Hills Way, Stevenage Hertfordshire SG1 1AY United Kingdom:011 44 1438 313311, EMAIL: postmaster@iee.org, INTERNET: http://www.iee.org, Fax: 011 44 1438 313465
Classificazione: 1 Contributo su Rivista
Abstract: The problem of crosstalk evaluation among PCB traces in a multilayer structure is studied by means of an S-matrix technique. Two bundles of parallel lines, perpendicularly crossing on different layers, are analysed, and this complex structure is decomposed into subsystems, each of them characterised by its S matrix. The elementary subsystems consist of bundles of parallel lines and crosses of two lines. A particular algorithm, developed to number the ports of each subsystem, allows one to easily recognise the interconnected ports and the external ports (I/O ports), to achieve the S matrix of the overall structure in terms of the I/O ports. The application of this technique to a 3×3 and a 7×7 configuration shows a good agreement between theoretical and experimental results. Finally, the analysis in the frequency domain is extended to the time domain by a standard FFT algorithm, and, as an example, an ESD current flowing along a line is examined, as well as its coupling toward an adjacent and crossing line.
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/25268

An accurate 3-D model for the brain cortex magnetic stimulation
JOURNAL OF MEDICAL ENGINEERING & TECHNOLOGY
Autore/i: Cerri, Graziano; DE LEO, Roberto; Moglie, Franco; Schiavoni, A.
Classificazione: 1 Contributo su Rivista
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/33559

An Efficient Analysis of EM Fields into Shielded Enclosures Excited by ESD Through Rectangular Slots
Proceedings of the Int. Sumposium on Electromagnetic Compatibility EMC '94
Autore/i: DE LEO, Roberto; Cerri, Graziano; MARIANI PRIMIANI, Valter; A., Verdolini
Editore: EMC Roma 94
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/80966

Array of small apertures in shielded enclosure: ESD coupling
International aerospace lightning conference
Autore/i: De Leo, R.; Cerri, G.; Mariani Primiani, V.
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/309731

ESD effects on shielded cables
Proceedings Workshop on shielding effectiveness
Autore/i: Cerri, G.; Mariani Primiani, V.; De Leo, R.; Venturi, A.
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/309756

Field Penetration into Metallic Enclosures Through Slots Excited by ESD
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
Autore/i: Cerri, Graziano; DE LEO, Roberto; MARIANI PRIMIANI, Valter; Righetti, M.
Classificazione: 1 Contributo su Rivista
Abstract: The coupling through apertures between an electrostatic discharge (ESD) current flowing on the external shield of a metallic enclosure and the electromagnetic field of its internal region is analyzed; the excitation of the electric field on the apertures by the ESD and then the evaluation of the internal field are calculated separately, by means of the finite difference time domain (FDTD) technique and the modal expansion, respectively. All the numerical results obtained with this simple and numerically efficient approach have been validated by measurements
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/71914

Analysis of crosstalk in multilayer printed circuits by scattering matrix method
IEEE MTT-S European Topical Congress
Autore/i: De Leo, R.; Cerri, G.; Mariani Primiani, V.
Editore: IEEE
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Abstract: The problem of the crosstalk evaluation among PCB traces in multilayer structure is studied by means of S-matrix technique: two bundles of parallel lines perpendicularly crossing on different layers are analyzed. This complex structure is decomposed into subsystems, each of them characterized by its S-matrix. A particular algorithm, developed to number the ports of each subsystem, allows us to achieve the S matrix of the overall structure in terms of the I/O ports. Finally, by a standard FFT algorithm, this technique is used to evaluate the disturbances produced by an Electrostatic Discharge (ESD).
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/309754

FDTD analysis of crosstalk in multilayer printed circuits
INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS
Autore/i: Cerri, Graziano; DE LEO, Roberto; MARIANI PRIMIANI, Valter; Schiavoni, A.
Classificazione: 1 Contributo su Rivista
Abstract: A theoretical analysis has been developed to study the crosstalk in crossed bundles of parallel lines. The model is based on the theory of the coupled transmission lines and the resulting system of differential equations has been solved by means of the finite difference, time-domain (FDTD) method. The frequency response of the network has been achieved by the discrete fourier transform (DFT) algorithm; measurements, performed with a vectorial network analyser, show a good agreement with numerical simulation.
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/71915

Analysis of coupling in multilayer PCB traces in the frequency and time domain
Proceedings of the 10th Int. Zurich Symposium on Electromagnetic Compatibility
Autore/i: Cerri, Graziano; DE LEO, Roberto; MARIANI PRIMIANI, Valter; A., Schiavoni
Editore: Swiss Federal Institute of technology Zurich
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/80961

Investigation of ground plane current distribution
Proceedings of the 10th Int. Zurich Symposium on Electromagnetic Compatibility
Autore/i: Cerri, Graziano; DE LEO, Roberto; MARIANI PRIMIANI, Valter; A., Schiavoni
Editore: Swiss Federal Institute of technology Zurich
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/80960

A rigorous model for radiated emission prediction in PCB circuits
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
Autore/i: Cerri, Graziano; DE LEO, Roberto; MARIANI PRIMIANI, Valter
Classificazione: 1 Contributo su Rivista
Abstract: The problem of the radiated emission from printed circuit boards, (PCBs) is theoretically and experimentally investigated. Differential mode and common mode currents are separately studied by means of a rigorous method based on proper Green's functions. The solution of the integral equations for the current distribution, derived from the problem formulation, is numerically achieved by the method of moments. Simulated results are in good agreement with measurements. The final products of this study are masks that establish the maximum allowable currents or voltage values as a function of frequency to comply with CISPR regulation
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/71922

`Thermic end-fire' interstitial applicator for microwave hyperthermia
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
Autore/i: Cerri, Graziano; DE LEO, Roberto; MARIANI PRIMIANI, Valter
Classificazione: 1 Contributo su Rivista
Abstract: The analysis of a thermic end-fire interstitial applicator for microwave hyperthermai, i.e. an applicator that performs a tip-localized heating of the surrounding lossy medium, is presented. The antenna consists of a shorted coaxial cable with an annular radiating aperture at the end. the analytical approach is based on the equivalence principle, which leads to an integral equation for the equivalent magnetic current distribution on the aperture; solution is achieved by the method of moments. All theoretical results are compared to experimental ones, showing a good agreement in a wide frequency range
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/71921

TRANSCRANIAL MAGNETIC STIMULATION - AN ACCURATE 3-D PREDICTIVE MODEL
ELECTRICITY AND MAGNETISM IN BIOLOGY AND MEDICINE
Autore/i: Cerri, Graziano; DE LEO, Roberto; Moglie, Franco; Schiavoni, A; Soverchia, M; Guidi, M; Scarpino, O; Sarti, A.
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/80408

AN ACCURATE 3D SIMULATION OF INDUCED CURRENTS IN BRAIN-TISSUES BY MAGNETIC STIMULATION
PROCEEDINGS OF THE ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY
Autore/i: Cerri, Graziano; DE LEO, Roberto; Guidi, M; Moglie, Franco; Scarpino, O; Schiavoni, A.
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Abstract: In spite of a large clinical and experimental application the techniques of transcranial magnetic stimulation still present obscure aspects. This concerns especially the safety parameters and the exact characterization of the current induced by a single magnetic pulse. The model proposed consists in an equivalent electric network derived by Maxwell's equations and applied to discretized magnetic resonance imaging of a normal subject head. This model allows an accurate 3D prediction of current distribution.
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/80409

Computer modelling of brain cortex excitation by magnetic field pulses
JOURNAL OF MEDICAL ENGINEERING & TECHNOLOGY
Autore/i: DE LEO, Roberto; Cerri, Graziano; Balducci, G; Moglie, Franco; Scarpino, O; Guidi, M.
Classificazione: 1 Contributo su Rivista
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/33563

Theoretical and experimental evaluation of the electromagnetic radiation from apertures in shielded enclosure
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
Autore/i: Cerri, Graziano; DE LEO, Roberto; MARIANI PRIMIANI, Valter
Classificazione: 1 Contributo su Rivista
Abstract: The problem of the radiated emission from apertures in metallic enclosures has been theoretically and experimentally investigated. In particular, the tangential electric field in the aperture has been evaluated by two methods: the first is helpful during the design stage and the second during the prototype development stage of electronic equipment shielded by a metallic box. The first method is a rigorous approach and uses the equivalence principle that leads to an integral equation then solved by the method of moments. The second is an approximate technique. This technique is based on simple, cheap, and quick measurements of the normal components of the magnetic field across the aperture. Numerical simulation in good agreement with experimental results is shown.
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/71923

Brain Cortex Current Distribution Induced by Low Frequency Electric and Magnetic Pulses
Italian Recent Advances in Applied Electromagnetics
Autore/i: Cerri, G.; DE LEO, Roberto; Francescangeli, Oriano; Melone, S.
Editore: Liguori
Luogo di pubblicazione: NAPOLI
Classificazione: 2 Contributo in Volume
Abstract: Invited Article
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/41266

Variational analysis of the dielectric rib waveguide using the concept of 'transition function' and including edge singularities
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
Autore/i: Rozzi, T; Cerri, G; M. N., Husain; Zappelli, Leonardo
Editore: IEEE / Institute of Electrical and Electronics Engineers Incorporated:445 Hoes Lane:Piscataway, NJ 08854:(800)701-4333, (732)981-0060, EMAIL: subscription-service@ieee.org, INTERNET: http://www.ieee.org, Fax: (732)981-9667
Classificazione: 1 Contributo su Rivista
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/31224

Accurate evaluation of electrical current excitation in brain cortex by magnetic field pulses
PHYSICA MEDICA
Autore/i: Cerri, G.; DE LEO, Roberto; Francescangeli, Oriano; Melone, S.
Editore: UK: Elsevier Pisa: Istituti Editoriali e Poligrafici Internazionali. Pisa Italy: Giardini Editori Stampatori
Classificazione: 1 Contributo su Rivista
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/29726

TLM Techniques in Microwave Ovens Analysis: Numerical and Experimental Results
IEE Conference Publication
Autore/i: De Leo, R.; Cerri, G.; Mariani Primiani, V.
Editore: IEE
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Abstract: The knowledge of the electric and thermic behaviour of a microwave oven is essential both for the designer and for the user. The former needs to know resonant frequencies and input impedance of the cavity in both situations, empty oven and filled with food, to realize a good matching between source (magnetron) and load. The latter needs to know temperature distribution inside the food to keep under control proteic degradation and/or to assure a complete food pasteurization and sterilization. The TLM method proves to be the most efficient; in the present contribution the method has been used to evaluate resonant frequencies of a commercial microwave oven, empty and filled with a phantom simulating the dielectric characteristics of a biological tissue; moreover the electric field distribution inside the phantom has been obtained. Theoretical results have been compared with experimental measurements performed by a vector network analyzer and infrared thermography obtaining a good agreement.
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/309724

Evaluation of scattering in a TEM cell by the FD-TD method
IEE Conference Publication
Autore/i: De Leo, R.; Cerri, G.; Mariani Primiani, V.; Mezzanotte, P.
Editore: Publ by IEE
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Abstract: The TEM cell is a fundamental tool in electromagnetic compatibility in that it permits one to simulate the effects of a plane wave incident on equipment under test in a region large with respect to the wavelength where the field is strictly TEM. The main restriction to the high-frequency operation of the cell arises from the cutoff of the first higher order mode. The new GTEM cell permits one to overcome this restriction. In fact, the absence of edges on the external surface, its tapering, and the use of absorbing material on the end wall ensure operation up to frequencies of several GHz. The scattering of metallic object in a GTEM cell is analyzed and the results are compared with scattering with plane wave exitation. FD-TD proves to be effective for any shape of scattering body with both sinusoidal and pulse exitation even if it is computer time consuming. A 2D analysis that reduces the computing time is reported.
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/309725

The microstrip spiral antenna
EUROPEAN TRANSACTIONS ON TELECOMMUNICATIONS AND RELATED TECHNOLOGIES
Autore/i: Cerri, Graziano
Classificazione: 1 Contributo su Rivista
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/72906

Analysis of the Microstrip-Slotline Crossing
Proceedings of the 20th European Microwave Conference
Autore/i: Benigni, Marco; Cerri, Graziano; Morini, Antonio; Rozzi, Tullio
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/83997

Microstrip patch applicators
International Symposium Digest - Antennas and Propagation - 1989
Autore/i: DE LEO, Roberto; Cerri, Graziano; Moglie, Franco
Editore: IEEE
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Abstract: Four hyperthermia applicators are described: a disk and a slot applicator which are resonant structures, and a quasi-TEM microstrip line and a spiral applicator which are wideband antennas. The thermal behavior of the antennas is analyzed by means of a computer program which solves the bio-heat-transfer equation (BHTE) for any geometry of the biological body in the two-dimensional approximation. The BHTE was solved by means of the hopscotch method, a particular version of the finite-difference method, taking into account the metabolism, the blood flow, and the specific absorption rate. The results of the theoretical analysis are compared with experimental data detected by the HP 8510A network analyzer as regards electrical measurements and by an infrared camera as regards temperature patterns on phantoms.
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/66651

Curved semiconductor rib waveguide laser/amplifiers
ECC Twinning Grant, STI-079-J-C(CD), Final Report
Autore/i: Rozzi, T. E.; Cerri, G.; Chiaraluce, Franco; DE LEO, Roberto; Ormondroyd, R.
Classificazione: 5 Altro
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/49706

Finite curvature and corrugations in dielectric ridge waveguides
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
Autore/i: Rozzi, T. E.; Cerri, G.; Chiaraluce, Franco; DE LEO, Roberto; Ormondroyd, R. F.
Editore: IEEE / Institute of Electrical and Electronics Engineers Incorporated:445 Hoes Lane:Piscataway, NJ 08854:(800)701-4333, (732)981-0060, EMAIL: subscription-service@ieee.org, INTERNET: http://www.ieee.org, Fax: (732)981-9667
Classificazione: 1 Contributo su Rivista
Abstract: Dielectric ridge waveguide is now widely used in passive and active integrated optics, and it could find use in millimeter-wave circuits. Families of devices such as ring lasers and couplers require structures with bends of finite length and relatively high curvature. The paper presents a technique. based on the concept of local modes, which also takes into account the corrugations due to fabrication. Results are in good qualitative agreement with experimental values reported in the literature
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/34331

Cross polarization coupling in curved dielectric rib waveguide
IEE PROCEEDINGS. PART J, OPTOELECTRONICS
Autore/i: Yeung, C.; Rozzi, Tullio; Cerri, Graziano
Classificazione: 1 Contributo su Rivista
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/72910

Microstrip applicators for therapy
included in Mikrowellen and Military Electronics Magazine
Autore/i: Cerri, G.; Chiaraluce, Franco; DE LEO, Roberto
Classificazione: 5 Altro
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/49704

Curvatura finita e corrugazioni in guida dielettrica di tipo rib
Atti della Sesta Riunione Nazionale di Elettromagnetismo Applicato
Autore/i: Rozzi, T. E.; Cerri, G.; Chiaraluce, Franco; DE LEO, Roberto; Ormondroyd, R.
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/48962

Analisi di applicatori a multislot per ipertermia a microonde
Atti della Sesta Riunione Nazionale di Elettromagnetismo Applicato
Autore/i: Cerri, G.; Chiaraluce, Franco; DE LEO, Roberto; Fiorini, D.
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/48961

Absorbed power distribution from single or multiple waveguide applicators during microwave hyperthermia
PHYSICS IN MEDICINE AND BIOLOGY
Autore/i: Antolini, R.; Cerri, Graziano; Cristoforetti, L.; DE LEO, Roberto
Classificazione: 1 Contributo su Rivista
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/72904

Accurate analysis of microstrip slot applicator radiation into biological media
Proc. U.R.S.I., International Symposium on Electromagnetic Theory
Autore/i: Cerri, G.; Chiaraluce, Franco; DE LEO, Roberto
Classificazione: 4 Contributo in Atti di Convegno (Proceeding)
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/48963

Microstrip disk antenna radiation into biological-like media
ALTA FREQUENZA
Autore/i: Cerri, G.; DE LEO, Roberto; Francescangeli, Oriano
Editore: Association Elettrotecnica Elettronic:AEI Uffic Center, Piaz Morandi 2, 20121 Milan Italy:011 39 02 77790223, EMAIL: soci@aei.it, Fax: 011 39 02 798817
Classificazione: 1 Contributo su Rivista
Abstract: The electromagnetic characteristics of microstrip disk antenna radiating into biological-like media are evaluated by use of the method of moments. In particular the distribution of electric field inside the biological-like body, the input admittance of the antenna and its working frequency as a function of the body dielectric characteristics are presented.
Scheda della pubblicazione: https://iris.univpm.it/handle/11566/29506