GB_Instrumentation Electromagnétique
The Electromagnetic Instrumentation domain gives XLIM researchers, academics and industry access to high-performance measurement resources for all radiating systems. Seven benches are used to characterize antennas, electromagnetic compatibility, materials and RADAR imaging
Coaxial dielectric probe “SPEAG” (DAK12)
Dielectric characteristics measurement (ε’, ε”, tanδ and α) of solid, semi-liquid and liquid materials from the parameter [S11] .
Characteristics:
· Operating frequency : 4.0 MHz– 3.0 GHz· Sample dimensions Thickness > 12 mm Width > 50 mm Length > 50 mm |
Feasible measurements: ·1 < εr < 200 10-3 < tanδ < 10 |
Système “Epsimu”
this device determines the complete set of electromagnetic properties of materials: solids, gels, liquids (ε’, ε’’, µ’, µ’’, tanδ and α)
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EpsiMu PE13
Specification : · Operating frequency : 10.0 MHz – 8.0 GHz · liquids, gels, powders and granular materials Sample dimensions : ϕext = 13 mm ϕint = 5,65 mm 2 mm < L < 30 mm Solid sample shape : hollow cylindrical · Sample shape : hollow cylindrical |
EpsiMu 7mm
Specification: · Operating frequency: 10.0 MHz – 18.0 GHz ·Solid sample · Sample dimensions : ϕext = 7 mm ϕint = 3,04 mm 2mm < L < 30mm Sample shape : hollow cylindrical |
Feasible measurements : 1 < ε’ < 450, 10-2 < tanδ < 10, 1 < µ’ < no known limit
Mode-Stirred Reverberation Chamber
a Faraday cage provide an environment isolated from external influences
It can be used with a stirrer to obtain the electromagnetic field necessary for the qualification of equipment to EMC standards
picture of the PLATINOM’s mode-stirred reverberation chamber
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Characteristics : · Operating frequency: 400MHz to 18 GHz · Faraday Cage · Interior dimensions: 3.56m X 2.46m X 2.45 m · Statistically homogeneous and isotropic field (DUT max dimension: 15% of the chamber volume)
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Feasible measurements:
· Immunity test · Emission test · Shielding effectiveness measurement of metallic enclosure |
Planar near-field electromagnetic characterization
Vertical planar near-field scanner (2.0 GHz – 110 GHz)
PLATINOM has an ultra-wide band (2.0 GHz – 110 GHz) vertical planar near-field scanner installed on an optical table. Currently, nine frequency bands are possible corresponding to the available near-field probes. The near-field probe is moved in front of the device under test positioned on the optical table. A vector network analyzer measures the electromagnetic wave created by the device under test on a volume of 1.0 x 1.0 x 0.3 m.
Vertical planar near-field scanner
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Characteristics: · Operating frequency: 2.17 – 3.3 GHz 3.22 – 4.9 GHz 8.0 – 110.0 GHz · Scan Area: 1 m x 1 m x 0.3 m · Resolution (x,y,z): 0.01 mm · Position Accuracy = 0.02 mm · optical table size: 1.2 X 2.0 m |
Feasible measurement: · Characterization and calibration of short-range 2D imaging · Near-field measurementfor mapping antenna surface currents . Antenna Test Range
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spherical near-field electromagnetic characterization (3D)
3D spherical scanner for probe-fed antenna pattern measurements and device under test example
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Characteristics:· Operating frequency : 8.0 – 110.0 GHz · Scan Area: 100 mm sphere
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Feasible measurement:· Matching impedance (|S11|) · Radiation pattern (0.1°) · Polarization radiation pattern · Realized gain (± 0.6 dB accuracy) · Directivity (accuracy of gain) |
Far-Field antenna test range
The objective of an antenna test range is to simulate the operational environment of the test antenna so the radiation specifications would be measured in a way as realistic as possible. The distance R between the antenna under test and the transmit antenna is great enough to approximate the spherical wave by a plane wave. The conventional far-field condition must respect this relation R = 2D²/λ with D the maximum aperture diameter and λ the wavelength
Far-Field antenna test range
| Characteristics:
· Frequency Range: 0.5 GHz to 12.0 GHz Full anechoic and shielded chamber · External dimensions: 9 m x 5 m x 5 m · Antenna size limits :1 m to 500 MHz and 0.3 m to 12 GHz · Weight limits: 20 Kg |
Feasible measurement:
· Matching impedance (|S11|) · Radiation pattern (0.5°) · Polarization radiation pattern · Realized gain (± 0.5 dB accuracy) · Directivity (accuracy of gain) |
Compact Antenna Test Range (PLATINOM/CISTEME)
CATR provides a far-field condition at a relatively short distance from the feed. The principle is to produce a quasi-plane wave test region by collimating the field from a point source using a equiphase radiating aperture such as a parabolic reflector.
Compact Antenna Test Range (PLATINOM/CISTEME)
| Characteristics:
· Frequency Range: 8.0 GHz to 110 GHz · Full anechoic and shielded chamber · External dimensions: 8 m x 5 m x 5 m · Antenna size limits :80 cm · Weight limits: 6 Kg |
Feasible measurement:
· Matching impedance (|S11|) · Radiation pattern (0.5°) · Polarization radiation pattern · Realized gain (± 0.5 dB accuracy) · Directivity (accuracy of gain) |
This equipment was co-financed by the CISTEME Technology Resource Centre CISTEME.
– Antenna characterisation (0.5-110 GHz)
– [S] parameters Characterisation (40 MHz -50 GHz)
– EMC characterisation
– Materials Characterisation
– Near-field characterisation (2D scanner)
– Near-field characterisation (3D scanner for probe-fed antenna pattern)
Karmann, P., Martinod, E., Arnaud, E., & Andrieu, J. (2023). Design of a Wideband, High Steering Angle and Low Side-Lobes Levels Matrix Antenna. International Journal of Electrical and Computer Engineering Research, 3(3), 13–20.
https://doi.org/10.53375/ijecer.2023.350
S. Jemmeli, T. Monediere, E. Arnaud and L. Huitema, “Ultra-Miniature and Circularly Polarized Ferrite Patch Antenna,” in IEEE Transactions on Antennas and Propagation, vol. 71, no. 8, pp. 6435-6443, Aug. 2023
https://doi.org/10.1109/TAP.2023.3284166
Fromenteze, T., Yurduseven, O., Uche, C. et al. Morphogenetic metasurfaces: unlocking the potential of turing patterns. Nat Commun 14, 6249 (2023).
