IEC TR 63307:2020

Measurement methods of the complex relative permeability and permittivity of noise suppression sheet

IEC TR 63307:2020(E) provides guidelines on the methods for measuring the frequency characteristics of permeability and permittivity in the frequency range of 1 MHz to 6 GHz for a noise suppression sheet for each electromagnetic noise countermeasure.

General Information

• Status: Published
• Publication Date: 26-Nov-2020
• ICS: 29.100.10 - Magnetic components
• Technical Committee: TC 51 - Magnetic components, ferrite and magnetic powder materials
• Current Stage: PPUB - Publication issued
• Start Date: 21-Dec-2020
• Completion Date: 27-Nov-2020

Standards Content (Sample)

IEC TR 63307 ®
Edition 1.0 2020-11
TECHNICAL
REPORT
colour
inside
Measurement methods of the complex relative permeability and permittivity of
noise suppression sheet
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IEC TR 63307 ®
Edition 1.0 2020-11
TECHNICAL
REPORT
colour
inside
Measurement methods of the complex relative permeability and permittivity of

noise suppression sheet
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.100.10 ISBN 978-2-8322-9085-9

– 2 – IEC TR 63307:2020 © IEC 2020
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions and symbols. 9
3.1 Terms and definitions . 9
3.2 Symbols . 9
4 General . 10
5 Measurement methods . 11
5.1 Inductance method . 11
5.1.1 Measurement parameters . 11
5.1.2 Measurement frequency and accuracy . 11
5.1.3 Measurement principle. 12
5.1.4 Test sample . 14
5.1.5 Test fixture . 14
5.1.6 Measurement environment . 14
5.1.7 Measurement uncertainty. 14
5.1.8 Measurement system . 16
5.1.9 Measurement procedure . 16
5.1.10 Example of measurement results . 16
5.1.11 Remarks . 17
5.2 Nicolson Ross Weir method . 18
5.2.1 Principle . 18
5.2.2 Measurement frequency and accuracy . 20
5.2.3 Measurement parameters . 20
5.2.4 Test sample . 20
5.2.5 Measurement environment . 21
5.2.6 Measurement uncertainly . 21
5.2.7 Measurement system . 22
5.2.8 Test fixture . 22
5.2.9 Measurement procedure . 22
5.2.10 Example of measurement results . 23
5.2.11 Remarks . 23
5.3 Short-circuited microstrip line method . 24
5.3.1 Principle . 24
5.3.2 Measurement frequency and accuracy . 25
5.3.3 Measurement parameters . 25
5.3.4 Test sample . 25
5.3.5 Measurement environment . 26
5.3.6 Measurement system . 26
5.3.7 Test fixture (MSL jig) . 26
5.3.8 Measurement procedure . 27
5.3.9 Results (example) . 27
5.3.10 Remarks . 28
5.4 Short-circuited coaxial line method . 28
5.4.1 Principle . 28

5.4.2 Measurement frequency and accuracy . 29
5.4.3 Measurement parameters . 30
5.4.4 Test sample . 30
5.4.5 Measurement environments . 30
5.4.6 Measurement system . 30
5.4.7 Test fixture (coax jig) . 31
5.4.8 Measurement procedure . 31
5.4.9 Results (example) . 32
5.4.10 Remarks . 33
5.5 Shielded loop coil method . 33
5.5.1 Measurement principle. 33
5.5.2 Measurement frequency and accuracy . 38
5.5.3 Measurement parameters . 39
5.5.4 NSS sample dimension and recommendation . 39
5.5.5 Measurement environment . 40
5.5.6 Measurement system . 40
5.5.7 Measurement procedure . 40
5.5.8 Measurement results . 41
5.5.9 Summary . 44
5.6 Harmonic resonance cavity perturbation method . 45
5.6.1 Theory . 45
5.6.2 Permeability evaluation . 46
5.6.3 Permittivity evaluation. 53
Annex A (informative) Derivation of the complex relative permeability of the
inductance method . 59
Annex B (informative) Short-circuited microstrip line method. 61
B.1 Fundamental calculation . 61
B.2 Determination of C and G . 62
S S
B.3 Determination of demagnetization factor N and coupling coefficient η . 64
B.4 Analysis with the software to determine the μ . 64
r
Annex C (informative) Short-circuited coaxial line method . 66
C.1 Fundamental calculation to determine μ . 66
r
C.2 Open-circuited coaxial line . 67
C.2.1 Measurement of effective permittivity ε (ε’ – jε” ) . 67
r r r
C.2.2 Example of the complex permittivity . 70
C.3 Remarks on lumped element approximation . 71
Bibliography . 73

Figure 1 – In-plane and perpendicular measurement direction of NSS sample . 11
Figure 2 – Toroidal-shaped sample cut from the NSS . 12
Figure 3 – Test fixture with a toroidal-shaped NSS sample . 13
Figure 4 – Equivalent circuit model of the test fixture . 13
Figure 5 – Schematic diagram of measurement system . 16
Figure 6 – Measurement results of NSS samples . 17
Figure 7 – Schematic diagram of a test fixture with a sample and signal flow graph . 18
Figure 8 – Cross section of coaxial line with NSS . 20
Figure 9 – Dimensions of test sample . 21

– 4 – IEC TR 63307:2020 © IEC 2020
Figure 10 – Schematic diagram of equipment system for measurement . 22
Figure 11 – Specification for test fixture of a 7 mm coaxial transmission line . 22
Figure 12 – Measurement results of noise suppression sheet . 23
Figure 13 – Equivalent circuits for the MSL . 25
Figure 14 – Rectangular shape of NSS sample . 26
Figure 15 – Measurement system .
...