Laboratorio di Compatibilità Elettromagnetica I

Personale strutturato

Maria Sabrina Sarto
Professore ordinario

Ruolo: Responsabile scientifico
email: mariasabrina.sarto@uniroma1.it
tel: 0644585542

sito personale: https://gomppublic.uniroma1.it/Docenti/Render.aspx?UID=eeba57c3-1853-45a...

Alessio Tamburrano
Professore associato
 
Ruolo: Responsabile Tecnico per misure elettriche, EM ed elettromeccaniche
tel: 0644585803
 
Giovanni De Bellis
Professore associato
 
Ruolo:  Responsabile e Preposto alla Sicurezza
tel: 0644585771
 
 
Altro personale autorizzato:
 
Nome: Alessandro Giuseppe D’Aloia
Qualifica: Assegnista
tel: 0644585771
 
Nome: Bidsorkhi Hossein Cheraghi
Qualifica: Research fellow
tel: 0644585533
 
Nome: Fabrizio Marra
Qualifica: Tecnico di laboratorio
tel: 0644585517
 
Nome: Andrea Rinaldi
Qualifica: Assegnista
tel: 0644585640
 
Nome: Marco Fortunato
Qualifica: Dottorando
tel: 0644585528
 
Nome: Domenico Cavallini
Qualifica: Contrattista
tel: 0644585528
 
Nome: Martina D'Alessandro
Qualifica: Borsista
tel: 0644585528
 
 
Descrizione del laboratorio:
 

Electromagnetic Compatibility (EMC) Laboratory of the Department of Astronautical, Electrical and Energy Engineering (DIAEE) of the University of Rome "La Sapienza" is located in Via delle Sette Sale 12B, Rome, Italy, close to the Church of S. Pietro in Vincoli. The Lab was founded in 1992 to promote scientific research and support EMC learning activities. Prof. Maria Sabrina Sarto has been the laboratory Director since 1998. The Lab, initially founded to perform EMC conducted tests inside a shielded room up to 100 MHz, is now provided with instruments for radiated emission/susceptibility measurements and electromagnetic characterizations (complex permittivity, shielding effectiveness, radar absorbing properties…) of new advanced materials. The available equipment allows tests in the frequency range between 40 Hz and 70 GHz.

 
Many research activities, carried out in the EMC Lab are related to research programs financed by national and international institutions, research institutes or industries. Moreover, the Lab supports exercitations for several classes of Electromagnetic Compatibility and Electrotechnics of different engineering courses (Electrical Engineering, Aerospace Engineering, Nanotechnology Engineering).
 
 
 
Instruments and test-fixtures
 
Reverberation Chamber (RC)
 
Model: based on a S+M Components shielded chamber
 
Main Characteristics:
Dimensions: 3.52 m × 2.95 m × 2.49 m
Minimum frequency: 300 MHz
Sanyo Denki 103H8221-62 step-by-step motor with Transtecno CM030 1 : 50 reduction gear (step resolution 0.0072°)
 
Use:
radiated emission tests
susceptibility tests
shielding tests (nested RCs configuration)

 

Vector Network Analyzer (VNA)

Model: Anritsu VectorStar MS4647A

Main Characteristics:

  • 2 ports
  • Frequency range: 70 kHz-70 GHz
  • V-Connectors (Option 11)
  • Time domain (Option 1)
  • 70 kHz frequency extension (Option 70)

Use:
S-parameters Passive and active device characterizations Materials properties measurements
Source/receiver of RF signals

Vector Network Analyzer (VNA)

Model: Agilent N5245A PNA-X

Main Characteristics:

  • 4 ports
  • Frequency range: 10 MHz-50 GHz
  • Frequency offset mode (Option 080)
  • Pulse modulator  (Option 021)
  • 4 pulse generators (Option 025)

Use:

  • S-parameters and X-parameters
  • Passive and active device characterizations
  • Materials properties measurements
  • Source/receiver of RF signals

Precision Impedance Analyzer

Model: Agilent 4294A

Main Characteristics:

  • Frequency range: 40 Hz-110 MHz
  • Basic impedance accuracy: +/-0.08 %

Use:

  • Impedance measurement of two terminal passive components
  • Semiconductor components
  • Permittivity and loss tangent evaluation of dielectric materials
  • Permeability and loss tangent evaluation of magnetic materials

RF Amplifiers

Model 1: Research Amplifier 75A250

Main Characteristics:

  • Power output, CW: 75 W (minimum)
  • Frequency range: 10 kHz-250 MHz

Model 2: Research Amplifier 30W1000B

Main Characteristics:

  • Power output, CW: 30 W (minimum)
  • Frequency range: 1 MHz-1 GHz

Model 3: Research Amplifier 25S1G4A

Main Characteristics:

  • Power output, CW: 25 W (minimum)
  • Frequency range: 800 MHz-4.2 GHz

Use:

  • Broadband amplifiers designed for applications where instantaneous bandwidth and power amplification are required

Spectrum Analyzer

Model: FSH3 Rohnde&Schwarz

Main Characteristics:

  • Frequency range: 100 kHz-3 GHz
  • Resolution bandwidth:  100 Hz-1 MHz
  • Distance-to-Fault Option (R&S®FSH-B1)
  • VSWR Bridge&Power Divider (R&S®FSH-Z2)
  • Power Sensor (R&S®FSH-Z1)
  • AM/FM audio demodulator

Use:

  • Spectra analysis of electrical signals
  • High-precision portable RF power meter
  • Time domain reflectometric tests

RF/Microwave Signal Generator

Model: Anritsu MG3692A

Main Characteristics:

  • Frequency range: 0.1 Hz-20 GHz
  • Max leveled output power: 15 dBm
  • Resolution: 0.01 Hz (0.02 Hz below 10 MHz)

Use:

  • Generation of CW frequencies
  • Generation of broad and narrow band sweeps across the frequency range of the instrument
  • Provides AM, FM, ΦM (phase modulation) and pulse modulation of the output signal using internal or external modulating sources

Spectrum Analyzer

Model:  Anritsu MS2665C

Main Characteristics:

  • Frequency range: 9 kHz-21.2 GHz
  • Min. resolution bandwidth: 30 Hz
  • Max. input level: +30 dBm
  • Average noise level: ≤–98 dBm

Use:

  • Spectra analysis of signals

Oscilloscope

Model: LeCroy WavePro 7100
 

Main Characteristics:

  • Sample rate: 20 GS/s (2 Ch) – 10 GS/s (4 Ch)
  • Analog Bandwidth @ 50 Ω: 1 GHz
  • Input Channels: 4
  • Input Impedance: 50 Ω; 1 MΩ/11pF typical

Use:

  • Waveform measurements and analysis

Arbitrary Function Generator

Model: Tektronix AFG 3252
 

Main Characteristics:

  • Channels: 2
  • Waveforms: Sine, Square, Pulse, Ramp, Triangle, Sin(x)/x, Exponential Rise and Decay, Gaussian, Lorentz, Haversine, DC, Noise
  • Effective maximum frequency out: 240MHz
  • Vertical resolution: 14 bit
  • Sample rate: 250 MS/s - 2 GS/s
     

Use:

  • Waveforms generation
Analyzer For Complex Signals

Model: MicroRaD NHT3D

Main Characteristics:

  • Frequency range (selective): DC-400 kHz
  • Frequency range (broadband): DC-40 GHz
  • Time domain analysis (oscilloscope mode with automatic and manual trigger)
  • Analysis in the frequency domain (real time FFT on 65536 points)
  • Dynamic Range: >100 dB
  • Isotropic Electric Field Probe (100 kHz-18 GHz; 0.8 ÷ 340 V/m)
  • Isotropic Magnetic Field Probe (5 Hz-400 kHz; 0.1 μT-2 mT)
     

Use:

  • Electric and magnetic field measurements

B-Field sensor

Model: Wandel & Goltermann EM Field Analyzer EFA-2

Main Characteristics:

  • Frequency range: 5 Hz-30 kHz
  • Measuring range: 10 nT-10 mT
  • Isotropic measurement

Use:

  • Measurement of magnetic field strength in the low-frequency range

Portable Electromagnetic Strength Meter

Model: PMM 8051

Main Characteristics:

  • Frequency range: 10 Hz-18 GHz
  • Isotropic electric field probe (B07)
  • Probe frequency range: 10 Hz - 10 kHz
  • Probe Resolution: 50 V/m
  • Probe full scale: 12000 V/m
  • Fiber optics connection
     

Use:

  • Measurement of electric field strength in the low-frequency range

Double Ridged Antennas

Model: EM-6961

Main Characteristics:

  • Frequency range: 1 GHz-18 GHz
  • Output impedance: 50 Ω nominal
  • Average Power Gain: 10.7 dB
  • Average Beamwidth: 53°(E plane); 48°(H plane)
  • Power for 200 V/m @ 10 GHz: 90 W
     

Use:

  • Transmit and receive electromagnetic waves

Horn Antennas

Model: custom-made

Main Characteristics:

  • Frequency range: 8 GHz-18 GHz

Use:

  • Transmitting and receiving electromagnetic waves

Loop Antennas

Model 1: EMCO MODEL 6509

Main Characteristics:

  • Passive loop antenna
  • Frequency range: 1 kHz-30 MHz
  • Input Impedance: 50
  • Maximum Input Power: 1 kW
  • Loop size: 12 inches
  • Manually switchable four-band transformer
  • Connector: type N, female
     

Model 2: Electro-Metrics ALR 30A

Main Characteristics:

  • Active loop antenna
  • Frequency range: 9 kHz-30 MHz
  • Dynamic range: 85 dB @ 10kHz / 125dB @ 1MHz
  • Input Impedance: 50
  • Loop size: 17 inches
  • Connector: type BNC

Use:

  • Shielding effectiveness, immunity, magnetic emission tests

Antennas

Model 1: Log periodic antenna EM-6951

Main Characteristics:

  • Frequency range: 300 MHz-1 GHz
  • Input Impedance: 50 
  • Average VSWR: <2:1
  • Maximum Continuous Power: 1000 W
  • Connector: type N, female
     

Model 2: Log periodic LPA-30

Main Characteristics:

  • Frequency range: 200 MHz-1000 MHz
  • Input Impedance: 50
  • Average VSWR: <2:1
     

Model 3: Biconical antenna BIA-30S

Main Characteristics:

  • Frequency range: 20 MHz-300 MHz
  • Input Impedance: 50 
  • Maximum Continuous Power: 0.5 W
  • Average VSWR: 1.4:1 with 6 dB pad
  • Peak Power: 1.0 W

Use:

  • Transmitting and receiving electromagnetic waves

Near Field Probe Set

ModelEMCO EHFP-30

Main Characteristics:

  • 3 magnetic field probes(6 cm, 3 cm and 1 cm loop)
  • 2 electric field probes (3.5 cm ball, 0.3 cm stub)
  • 1 extension handle (20 cm)

Use:

Diagnostic testing of radiated emissions

Flanged Coaxial Sample Holders

Model 1: custom-made

Main Characteristics:

  • Frequency range: 30 MHz – 1.5 GHz
  • Characteristic impedance: 50 Ω

Model 2: custom-made

Main Characteristics:

  • Frequency range: ~200 MHz – 8 GHz
  • Characteristic impedance: 50 Ω

 

Model 3: custom-made

Main Characteristics:

  • Frequency range: ~1 GHz – 18 GHz
  • Characteristic impedance: 50 Ω

Use:

  • Shielding effectiveness measurement of planar materials (ASTM D4935)

Rectangular Waveguides Set

Model: Flann Microwave and custom-made models

Main Characteristics:

  • WR90: X band (8.2 GHz – 12.4 GHz)
  • WR62: Ku band (12.4 – 18 GHz)
     

Use:

  • Measurement of relative complex permittivity of solid materials (ASTM D5568)

Dielectric Test Fixture

Model: Agilent 16451B

Main Characteristics:

  • Frequency ≤ 30 MHz
  • Material-under-test size: thickness ≤ 10 mm; diameter=10 to 56 mm

Use:

  • Measurement of relative complex permittivity of thin solid materials employing the parallel plate method (ASTM D150)

Coaxial Verification Kit

Model: Keysight 85051B

Main Characteristics:

  • Frequency range: 300 kHz - 18 GHz
  • Connector: 7 mm
  • Includes: 50 Ω airline (10 cm), 25 Ω mismacth airline, 20 dB and 50 dB attenuators.
     

Use:

  • Measurement of relative complex permittivity of solid materials (ASTM D7449)
  • To verify that a network analyzer is operating within its specified performance

Electronic Calibration Kits

Model 1: Anritsu 36585V

Main Characteristics:

  • 2 port
  • Frequency range: 70 kHz to 70 GHz

Model 2: Agilent N4693A

Main Characteristics:

  • 2 port
  • Frequency range: 10 MHz to 50 GHz

Use:

  • Precision full two-port VNA automatic calibrations

Mechanical Calibration Kits

Model 1: HP 85032E

Main Characteristics:

  • Connector: type N
  • Frequency range: DC to 6GHz

Model 2: Anritsu 3653

Main Characteristics:

  • Connector: type N
  • Frequency range: 10 MHz-18 GHz

Model 3: Anritsu 3652

Main Characteristics:

  • Connector: type K
  • Maximum Frequency: 40 GHz

Model 4: Keysight 85050D

Main Characteristics:

  • Connector: 7 mm interface
  • Frequency range: DC to 18 GHz
     

Use:

  • Full two-port VNA calibrations

Line Impedance Stabilization Network (LISN)

Model: Electro-Metrics ANS-25/2

Main Characteristics:

  • Frequency range: 10 kHz – 100 MHz
  • Power line frequency: DC to 400 Hz
  • Maximum current: 25 A
  • Connectors: BNC (monitor port), Superior plug/socket receptacles (power input/output)
     

Use:

  • To isolate an electrically operated device from external power source
  • High frequency conducted measurements

DAQ Devices

Model 1: NI USB-6210

Main Characteristics:

  • 16 analog input (16-Bit, 250 kS/s)
  • 4 digital input
  • 4 digital output
  • Software Compatibility: LabVIEW
     

Model 2: NI USB-6000

Main Characteristics:

  • 8 analog input (10-Bit, 10 kS/s)
  • 4 digital input/output
  • Software Compatibility: LabVIEW

Use:

  • for test, control, and design applications including portable data logging, field monitoring, embedded OEM, in-vehicle data acquisition…
  •  

AC/DC Current Probe Amplifier

Model: Tektronix AM 503B
 

Main Characteristics:

  • compatible with A6302, A6302XL, A6303, A6303XL, A6304XL, A6312, P6302, or P6303 current probes.
  • requires a TM500 or TM5000 series mainframe for operation
     

Use:

  • Simultaneous DC and AC current measurements
  • converting the sensed current into a proportional voltage signal that can be measured directly with an oscilloscope.

RF Current probes

Model 1FCC F-35A

Main Characteristics:

  • Frequency Range: 100 Hz-100 MHz
  • Continuous RF Signal Current: 3 A
  • Nominal RF Pulse Current: 100 A
  • Maximum Power Voltage: no limitation
  • Calibrate Output Load impedance: 50Ω
  • Sensitivity: 1 µA with a 1 µV receiver

Model 2FCC F-65

Main Characteristics:

  • Frequency Range: 100 kHz-1000 MHz
  • Continuous RF Signal Current: 1.7 A
  • Nominal RF Pulse Current: 150 A
  • Maximum Power Voltage: no limitation
  • Calibrate Output Load impedance: 50 Ω
  • Sensitivity: 1 µA with a 1 µV receiver (700 kHz-1000 MHz)

Use:

  • whenever RF current measurements are required

Current Probes/Clamps

Model 1: Fluke i1000s

Main Characteristics:

  • Measures ac from 0.1 to 1000 A
  • Isolation from Earth – 600 V
  • Safety-insulated BNC connector
  • 5 Hz to 100 kHz frequency response
  • Low pass filter to reject radio frequency interference
  • Selectable Mv OUTPUT: 1 mV/A, 10 mV/a, 100 mV/A
     

Model 2: Fluke i200-i200s

Main Characteristics:

  • Measures AC current up to 240 Amp
  • 600V CAT III max. voltage to ground
  • 40 Hz to 10 kHz frequency response
     

Model 3: Fluke 337 True-rms Clamp Meter

Main Characteristics:

  • Voltage DC and AC range: 0-600 V
  • Current DC and AC range: 0-999.9 A
  • Resistance range: 0 - 600.0 Ω, 601 - 6000 Ω
  • Frequency range: 5 - 400 Hz
  • Diameter of measurable conductor: 0.12” or 30.5 mm max
  • Operating temperature: 14 to 122°F (-10 to 50°C)
     

Model 4: Tektronix A6303

Main Characteristics:

  • 2 meter cable
  • 100 Amps Continuous / 500 Amps Peak
  • DC to 15 MHz
  • Up to 0.83 in. Conductor Diameter

Use:

  • Current measurements

Surface Probes

Model 1FCC F-90

Main Characteristics

  • Frequency Range: 10 kHz- 1 MHz
  • Continuous RF Signal Current: 100 A
  • Nominal RF Pulse Current: 100 A
  • Maximum Power Voltage: no limitation
  • Calibrate Output Load impedance: 50 Ω
  • Sensitivity: 12.5 µA with a 1 µV receiver
     

Model 2: FCC F-91

Main Characteristics:

  • Frequency Range: 1 MHz- 100 MHz
  • Continuous RF Signal Current: 20 A
  • Nominal RF Pulse Current: 100 A
  • Maximum Power Voltage: no limitation
  • Calibrate Output Load impedance: 50 Ω
  • Sensitivity: 1 µA with a 1 µV receiver

Use:

  • Measurements of currents on metallic conductors with flat regions such as ground planes, striplines, printed wiring boards, bundles of wire and architectural structures

Infrared Temperature Probe

Model: Fluke 80T-IR

Main Characteristics:

  • Temperature range: 0 to 500°F (-18 to 260 °C)
  • Switchable from °F/°C
  • ±3% accuracy between 18 and 28°C
  • 1 second response time
  • Emissivity fixed at .95
  • 4:1 optical resolution
     

Use:

  • Temperature measurements for applications where object being measured cannot be touched

Etching Machine

Model: Nuova Delta Elettronica GA 1300

Main Characteristics:

  • Voltage: 230V
  • Capacity: min. 3 lt
  • Thermostat heater: 200W
     

Use:

  • Foam etching of mono and double-sided circuits.

Bromographer

Model: Nuova Delta Elettronica TR-900

Main Characteristics:

  • Voltage: 220V 50/60 Hz
  • Absorption: 20 W
  • 2 Ultra violet tubes: 8 W
     

Use:

  • PCB photo-etching

Soldering Station

Model: Weller WP-65

Main Characteristics:

  • Supply voltage: 24 V
  • Power: 65 W
  • Max temperature: 450°
     

Use:

  • Soldering

Makeblock XY plotter

Main Characteristics:

  • Frame: Anodized Aluminium
  • Working area (X x Y): 620mmx620mmx140mm
  • Max working speed: 50mm/s
  • Power: 100-240 V~50/60Hz AC/DC Power adapter, 12V/3.0A
  • Main Controller: Makeblock Orion (Arduino UNO compatible)
     

Use:

  • Drawing
  • Mini CNC
  • Laser engraving

Variac

Model: Type V-20 (Belotti)

Main Characteristics:

  • Input: 220 V
  • Output: 0-220 V
  • Rated current output: 10 A
  • Power rating: 2.2 kVA

Use:

  • to step down voltages
 
Servizi offerti
 

EM characterization of materials:
Shielding effectiveness measurements
Radar absorbing properties
Complex permittivity measurements

Reflectometric tests

Active and passive devices characterization

Electromagnetic field measurements
Power frequency magnetic fields
Power frequency electric fields
Radio frequency EM fields

Current measurements
Power frequency currents
Pulse currents

Current density measurements

 

 

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