ANTENNA AND MICROWAVE LABORATORY Research and

ANTENNA AND MICROWAVE
LABORATORY
Research
and
Innovation
Prototyping
and
Measuring
EM Simulation
and
Optimization
ANTENNA AND MICROWAVE
LABORATORY
The mission
To teach and promote creative research in
modern electromagnetics, antennas, sensors
and microwave power applications by addressing
the needs of industry, government agencies and
scientific community
ANTENNA AND MICROWAVE
LABORATORY
Facilities
LAM is equipped with ANA (Automatic Network Analyzer), MW/RF
sources, amplifiers, power meters and sensors, oscilloscopes and
standard electronic equipments.
The most advanced EM and MW circuit simulators (FEKO, ENSEMBLE,
CST, MW OFFICE, ADS, Proprietary EM CAD Framework) are used
for the design and optimization.
A small anechoic chamber dedicated to teaching and research
activities occupies one part of the Lab. Microwave circuits and planar
passive/active antenna prototypes are fabricated using a computer
controlled milling machine.
ANTENNA AND MICROWAVE
LABORATORY
National and international collaborations
ASI (Agenzia Spaziale Italiana) and ESA (European Space Agency)
Planar antennas and conformal arrays for space applications
Universities of Siena and Messina
Antennas, Radar systems and Periodic Band-gap Structures
IFA (Istituto di Fisica Applicata, CNR)
EM modelling of composite materials and dielectric spectroscopy
Thayer School of Engineering, Dartmouth College, NH, USA
Interstitial applicators for tissue thermal ablation (surgery)
Laboratoire d’Electromagnetique, Université de Nice-Antipolis, France
Wideband antennas and sensors for GPR applications
Radiation Oncology Department, University of California at San
Francisco, USA
Planar applicators for breast cancer therapy
ANTENNA AND MICROWAVE
LABORATORY
Industrial collaborations
Galileo Avionica Spa – polarization agile radar antennas
Contraves Spa – PLL MMW sources (95 GHz) and wet antenna modelling
ASK Industries Spa – automotive antennas
Compel Spa – MMW planar arrays for LMDS systems
Centro Laser Spa – microwave sensors for industrial applications
Cristini Spa – microwave sensors for felt moisture monitoring
Saima Spa – microwave and MMW imaging
Colorobbia Spa – microwave ovens for high-temperature
ceramic/nanoparticles sintering
ANTENNA AND MICROWAVE
LABORATORY
Microwave antenna research topics
Research activity covers topics addressing both radar and
communications applications
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SAR planar polarization agile arrays
Conformal array antennas
High gain X band hybrid feed antennas for surface radars
Compact and miniaturized antennas
UWB planar antennas
Automotive antennas
ANTENNA AND MICROWAVE
LABORATORY
A. Vallecchi and G. Biffi Gentili , “Design of dual-polarized series-fed
microstrip arrays with low losses and high polarization purity,” IEEE
Transactions on Antennas and Propagation, vol. 53, no. 5, pp. 17911798, May 2005.
ANTENNA AND MICROWAVE
LABORATORY
A. Vallecchi and G. Biffi Gentili, “Broad band full scan coverage
polarization agile spherical conformal array antennas: pseudo-uniform
vs. pseudo-random element arrangements,” 2003 IEEE International
Symposium on Phased Array Systems and Technology, Oct. 14-17,
2003, Boston, Massachusetts.
ANTENNA AND MICROWAVE
LABORATORY
Millimeter wave planar dual layer array for LMDS systems
(Under Compel Spa research contract)
ANTENNA AND MICROWAVE
LABORATORY
G. Garfagnini, M. Cerretelli, R. Serenelli, G. Biffi Gentili, “Dual Circularly
Polarized Radial Line Slot Antenna,” Quaderni di Elettromagnetismo Applicato
(SIEm), to appear
ANTENNA AND MICROWAVE
LABORATORY
Radiation pattern of a FM multiwire antenna embedded
inside the Ferrari M137 rear window
(Under ASK Spa research contract)
ANTENNA AND MICROWAVE
LABORATORY
M. Cerretelli, G. Biffi Gentili, “A new compact multi-band folded polygonal monopole for
automotive application”, ARP 2004: The IASTED International Conference on Antennas, Radar,
and Wave Propagation, Banff, AB, Canada, July 8-10, 2004.
G. Biffi Gentili, M. Cerretelli, L. Cecchi, “Coated
Conical Antenna for Automotive Application”, Journal
of Electromagnetic Waves and Applications, vol. 18,
no. 1, pp. 85-97, January 2004.
ANTENNA AND MICROWAVE
LABORATORY
Microwave Sensor research topics
Research activity covers topics addressing industrial, scientific,
medical and environmental heritage sensing needs
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Microwave aquametry
Dielectric spectroscopy
Surface and sub-surface planar sensors
High temperature microwave sensors
Near-field anisotropy sensors
Sensor-MUT electromagnetic interaction modeling
Material moisture sensing
Calibration and inversion techniques
Smart sensor networks
Microwave plethysmography
ANTENNA AND MICROWAVE
LABORATORY
G. Biffi Gentili, C. Riminesi, N. Sottani, “Full-wave modeling of microwave planar
reflection sensors for material moisture testing,” Special Issue on “Subsurface
Sensing Technologies and Applications”, International Journal on Microwave and
Millimeter Wave Non-destructive Evaluation, 2, 4, pp. 453-470, October 2001.
ANTENNA AND MICROWAVE
LABORATORY
Cooling air flow
Heating volume
High temperature
ceramic sample
Reflection microwave TEM Cell Sensor for ceramic
materials characterization at very high temperatures
(Under Colorobbia Spa research contract)
M. Linari, G. Biffi Gentili, G. Baldi, “A new microwave sensor for measuring
dielectric properties of materials at high temperature”, Atti 2° MISA 2004,
p. 24, October 2004.
ANTENNA AND MICROWAVE
LABORATORY
Evanescent field microstrip ring sensor
(surface planar sensor)
Near field cavity-backed meander slot
Sensor (sub-surface planar sensor)
G. Avitabile, G. Biffi Gentili, N. Sottani, “A rugged active sensor for microwave aquametry,” Microwave Symposium
Digest, 2001 IEEE MTT-S International, Phoenix, Arizona, USA, May 20-25, 2001, vol. 3, pp. 2259 -2262.
M. Cerretelli, C. Riminesi, N. Sottani, G. Biffi Gentili, “Slot Sensor for Moisture Content Measurement of Thin
Materials,” 6th International Workshop on Finite Elements for Microwave Engineering-Antennas, Circuits and
Devices, Chios, Grecee, May 30-June 1, 2002.
ANTENNA AND MICROWAVE
LABORATORY
Microwave and RF Hyperthermia research topics
Research activity covers topics addressing microwave applicator
modeling and optimization, RF heating of biological tissues and
temperature monitoring
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Loco-regional microwave applicators
Endocavitary microwave applicators
Minimally invasive microwave interstitial applicators
RF magnetic applicators
Magnetic nanoparticles assisted hyperthermia
Magnetic targeting
Transponder-based temperature monitoring
ANTENNA AND MICROWAVE
LABORATORY
Catheter
2
m
m
mm
5
6
Anchor Balloon
Applicator
SAR distribution
Longitudinal section
TISSUE
G. Biffi Gentili, M. Cerretelli, I. Longo, N. Tosoratti, “A Coaxial Antenna with Miniaturized
Choke for Minimally Invasive Interstitial Heating”, IEEE Trans. On Biomedical Engineering,
vol. 50, no. 1, pp.82-88, January 2003.
ANTENNA AND MICROWAVE
LABORATORY
Catheter
Temperature
monitoring
Applicator
Anchor Balloon
TISSUE
Catheter
Transponder
Applicator
Anchor Balloon
Thermocouple
TISSUE
M. Linari, G. Garfagnini, G. Biffi Gentili, “Implantable micro-transponder system
for measuring tissue temperature during hyperthermic treatments: a feasibility
study”, Atti XV RiNEm, pp. 165-168, sett. 2004.
ANTENNA AND MICROWAVE
LABORATORY
Flexible applicator for radiofrequency physiotherapy
SAR distribution
ANTENNA AND MICROWAVE
LABORATORY
Applicator with bolus for radiofrequency physiotherapy
Applicator Design
Numerical results
Measured results
ANTENNA AND MICROWAVE
LABORATORY
Ferrite Core Applicators for Magnetic
Nanoparticles Assisted RF Hyperthermia
UI type Ferrite Core
µ = 100
Dimensions:
28 x 30 x 104 mm3
Ring type Ferrite Core
µ = 100
Dimensions:
104 / 74 /30 mm
Magnetic field
ANTENNA AND MICROWAVE
LABORATORY
Microwave heating research topics
Research activity has been focused on the EM and thermal modeling
of industrial high power microwave heating processes
9 Granular ceramic materials EM modeling
9 High temperature dielectric spectroscopy
9 Mono and multimodal resonant cavity EM modeling