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PD IEC TR 63307:2020 Measurement methods of the complex relative permeability and permittivity of noise suppression sheet, 2020
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- CONTENTS
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and symbols [Go to Page]
- 3.1 Terms and definitions
- 3.2 Symbols
- 4 General
- Table 1 – Measurement method and frequency
- 5 Measurement methods [Go to Page]
- 5.1 Inductance method [Go to Page]
- 5.1.1 Measurement parameters
- 5.1.2 Measurement frequency and accuracy
- Figures [Go to Page]
- Figure 1 – In-plane and perpendicular measurement direction of NSS sample [Go to Page]
- 5.1.3 Measurement principle
- Figure 2 – Toroidal-shaped sample cut from the NSS
- Figure 3 – Test fixture with a toroidal-shaped NSS sample
- Figure 4 – Equivalent circuit model of the test fixture [Go to Page]
- 5.1.4 Test sample
- 5.1.5 Test fixture
- 5.1.6 Measurement environment
- 5.1.7 Measurement uncertainty
- 5.1.8 Measurement system
- 5.1.9 Measurement procedure
- 5.1.10 Example of measurement results
- Figure 5 – Schematic diagram of measurement system [Go to Page]
- 5.1.11 Remarks
- Figure 6 – Measurement results of NSS samples
- 5.2 Nicolson Ross Weir method [Go to Page]
- 5.2.1 Principle
- Figure 7 – Schematic diagram of a test fixture with a sample and signal flow graph [Go to Page]
- 5.2.2 Measurement frequency and accuracy
- 5.2.3 Measurement parameters
- 5.2.4 Test sample
- Figure 8 – Cross section of coaxial line with NSS [Go to Page]
- 5.2.5 Measurement environment
- 5.2.6 Measurement uncertainly
- Figure 9 – Dimensions of test sample [Go to Page]
- 5.2.7 Measurement system
- 5.2.8 Test fixture
- 5.2.9 Measurement procedure
- Figure 10 – Schematic diagram of equipment system for measurement
- Figure 11 – Specification for test fixture of a 7 mm coaxial transmission line [Go to Page]
- 5.2.10 Example of measurement results
- 5.2.11 Remarks
- Figure 12 – Measurement results of noise suppression sheet
- 5.3 Short-circuited microstrip line method [Go to Page]
- 5.3.1 Principle
- 5.3.2 Measurement frequency and accuracy
- 5.3.3 Measurement parameters
- 5.3.4 Test sample
- Figure 13 – Equivalent circuits for the MSL [Go to Page]
- 5.3.5 Measurement environment
- 5.3.6 Measurement system
- 5.3.7 Test fixture (MSL jig)
- Figure 14 – Rectangular shape of NSS sample
- Figure 15 – Measurement system [Go to Page]
- 5.3.8 Measurement procedure
- 5.3.9 Results (example)
- Figure 16 – Short-circuited microstrip line test fixture (MSL jig) [Go to Page]
- 5.3.10 Remarks
- 5.4 Short-circuited coaxial line method [Go to Page]
- 5.4.1 Principle
- Figure 17 – Complex relative permeability of a NSS sample C with 0,236 mm thickness, as measured at N = 0 (and η = 0,135 2) and corrected by demagnetization factor N = 0,037 (and η = 0,135 2) [Go to Page]
- 5.4.2 Measurement frequency and accuracy
- Figure 18 – Equivalent circuits for the coax jig [Go to Page]
- 5.4.3 Measurement parameters
- 5.4.4 Test sample
- 5.4.5 Measurement environments
- 5.4.6 Measurement system
- Figure 19 – Toroidal shape of NSS sample [Go to Page]
- 5.4.7 Test fixture (coax jig)
- 5.4.8 Measurement procedure
- Figure 20 – Measurement system
- Figure 21 – Short-circuited coaxial line test fixture (coax jig) [Go to Page]
- 5.4.9 Results (example)
- Figure 22 – Complex relative permeability of a NSS sample A with 0,29 mm thickness, as measured and corrected by the permittivity [Go to Page]
- 5.4.10 Remarks
- 5.5 Shielded loop coil method [Go to Page]
- 5.5.1 Measurement principle
- Figure 23 – Complex relative permeability of a NSS sample B with 0,25 mm thickness, as measured and corrected by the effective permittivity
- Figure 24 – Structure of shielded loop coil
- Figure 25 – Shielded loop coil and NSS sample arrangement
- Figure 26 – Whole structure of the measuring unit of the equipment [Go to Page]
- 5.5.2 Measurement frequency and accuracy
- Figure 27 – DC magnetization curve
- Figure 28 – Estimation of absolute value correction coefficient M’s [Go to Page]
- 5.5.3 Measurement parameters
- 5.5.4 NSS sample dimension and recommendation
- Figure 29 – Recommended shape of NSS sample [Go to Page]
- 5.5.5 Measurement environment
- 5.5.6 Measurement system
- 5.5.7 Measurement procedure
- Figure 30 – Block diagram of measurement system [Go to Page]
- 5.5.8 Measurement results
- Figure 31 – Measured complex relative permeability asa function of the size of a NSS sheet (Sample A-01)
- Table 2 – Measurement sample table [Go to Page]
- Figure 32 – Measured complex relative permeability asa function of the size of a NSS sheet (Sample B-01)
- Figure 33 – Measured complex relative permeability of a NSS sheetas a function of DC bias field intensity (Sample A-02) [Go to Page]
- 5.5.9 Summary
- Figure 34 – Measured complex relative permeabilityafter absolute value calibration (Sample A-01)
- Figure 35 – Measured complex relative permeabilityafter absolute value calibration (Sample B-01)
- 5.6 Harmonic resonance cavity perturbation method [Go to Page]
- 5.6.1 Theory
- 5.6.2 Permeability evaluation
- Figure 36 – Electromagnetic flux to evaluate permeabilityin the harmonic resonance cavity resonator
- Figure 37 – Example of the resonance characteristics change
- Figure 38 – Cavity resonator for 3,6 GHz to 7,2 GHz
- Figure 39 – Cavity resonator for 0,25 GHz to 2 GHz
- Figure 40 – Examples of resonance frequencies
- Figure 41 – Example of the resonance curves of a harmonic resonance cavity
- Figure 42 – Examples of samples
- Figure 43 – Measuring system
- Figure 44 – Sample installation in the cavity for the permeability measurement [Go to Page]
- 5.6.3 Permittivity evaluation
- Figure 45 – Measured results of the permeability for Sample A and B and a copper rod
- Figure 46 – Electromagnetic flux to evaluate permittivityin the harmonic resonance cavity resonator
- Figure 47 – Sample installation in the cavity for the permittivity measurement
- Figure 48 – Adjustment procedure and adjusted results
- Figure 49 – Measured results of the permittivity for the two samples, A and B
- Annex A (informative)Derivation of the complex relative permeability of the inductance method
- Annex B (informative)Short-circuited microstrip line method [Go to Page]
- B.1 Fundamental calculation
- B.2 Determination of CS and GS
- B.3 Determination of demagnetization factor N and coupling coefficient η
- B.4 Analysis with the software to determine the μr
- Figure B.1 – Complex relative permeabilities of Sample C with 0,236 mm thickness for toroidal shape and rectangular shape corrected by N = 0,037 and η = 0,135 2
- Figure B.2 – Complex relative permeabilities of Sample C with 0,236 mm thickness for rectangular shape corrected by N = 0, 0,018 5 and 0,037 with η = 0,135 2
- Figure B.3 – Complex relative permeabilities of Sample C with 0,236 mm thickness for rectangular shape corrected by η = 0,225 3, 0,169 and 0,135 2 with N = 0,037
- Annex C (informative)Short-circuited coaxial line method [Go to Page]
- C.1 Fundamental calculation to determine μr
- C.2 Open-circuited coaxial line
- Figure C.1 – Open-circuited coaxial line jig
- Figure C.2 – Equivalent circuits for the open-circuited coaxial line
- C.3 Remarks on lumped element approximation
- Figure C.3 – Complex relative permittivity of NSS Sample A with 0,29 mm thickness,as measured and corrected by the permeability
- Figure C.4 – Complex relative permittivity of NSS Sample B with 0,25 mm thickness,as measured and corrected by the permeability
- Figure C.5 – Dependence of phase shift βt on frequency
- Bibliography [Go to Page]