Schematics

SAR REFERENCE DIPOLE CALIBRATION REPORT
Ref: ACR.262.11.20.MVGB.A
4 MEASUREMENT METHOD
The IEEE 1528, OET 65 Bulletin C and CEI/IEC 62209 standards provide requirements for
reference dipoles used for system validation measurements. The following measurements were
performed to verify that the product complies with the fore mentioned standards.
4.1 RETURN LOSS REQUIREMENTS
The dipole used for SAR system validation measurements and checks must have a return loss of -20
dB or better. The return loss measurement shall be performed against a liquid filled flat phantom,
with the phantom constucted as outlined in the fore mentioned standards.
4.2 MECHANICAL REQUIREMENTS
The IEEE Std. 1528 and CEI/IEC 62209 standards specify the mechanical components and
dimensions of the validation dipoles, with the dimensions frequency and phantom shell thickness
dependent. The COMOSAR test bench employs a 2 mm phantom shell thickness therefore the
dipoles sold for use with the COMOSAR test bench comply with the requirements set forth for a 2
mm phantom shell thickness.
5 MEASUREMENT UNCERTAINTY
All uncertainties listed below represent an expanded uncertainty expressed at approximately the 95%
confidence level using a coverage factor of k=2, traceable to the Internationally Accepted Guides to
Measurement Uncertainty.
5.1 RETURN LOSS
The following uncertainties apply to the return loss measurement:
Frequency band
Expanded Uncertainty on Return Loss
400-6000MHz
0.1 dB
5.2 DIMENSION MEASUREMENT
The following uncertainties apply to the dimension measurements:
Length (mm)
Expanded Uncertainty on Length
3 - 300
0.05 mm
5.3 VALIDATION MEASUREMENT
The guidelines outlined in the IEEE 1528, OET 65 Bulletin C, CENELEC EN50361 and CEI/IEC
62209 standards were followed to generate the measurement uncertainty for validation
measurements.
Scan Volume
Expanded Uncertainty
1 g
20.3 %
10 g
20.1 %
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Template_ACR.DDD.N.YY.MVGB.ISSUE_COMOSAR Dipole vH