TR 102 273-1-2 : 1.2.1
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ELECTROMAGNETIC COMPATIBILITY AND RADIO SPECTRUM MATTERS (ERM); IMPROVEMENT ON RADIATED METHODS OF MEASUREMENT (USING TEST SITE) AND EVALUATION OF THE CORRESPONDING MEASUREMENT UNCERTAINTIES; PART 1: UNCERTAINTIES IN THE MEASUREMENT OF MOBILE RADIO EQUIPMENT CHARACTERISTICS; SUB-PART 2: EXAMPLES AND ANNEXES
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Foreword
1 Scope
2 References
3 Definitions, symbols and abbreviations
3.1 Definitions
3.2 Symbols
3.3 Abbreviations
4 Examples of measurement uncertainty analysis (free
field test sites)
4.1 Introduction
4.2 Example 1: Verification procedure
4.2.1 Uncertainty contributions: stage 1: direct
attenuation measurement
4.2.1.1 Contributions from the mismatch
components
4.2.1.2 Contributions from individual
components
4.2.1.3 Contribution from the random
component
4.2.1.4 Summary table of contributory
components
4.2.2 Uncertainty contributions: stage 2: radiated
attenuation measurement
4.2.2.1 Contributions from the mismatch
components
4.2.2.2 Contributions from individual
components
4.2.2.3 Contribution from the random component
4.2.2.4 Summary table of contributory
components
4.2.2.5 Expanded uncertainty for the verification
procedure
4.3 Example 2: measurement of a transmitter parameter
(spurious emission)
4.3.1 Uncertainty contributions: stage 1: EUT
measurement
4.3.1.1 Contributions from the mismatch
components
4.3.1.2 Contributions from the individual
components
4.3.1.3 Contribution from the random component
4.3.1.4 Summary table of contributory
components
4.3.2 Uncertainty contributions: stage 2: substitution
measurement
4.3.2.1 Contributions from the mismatch
components
4.3.2.2 Contributions from the individual
components
4.3.2.3 Contribution from the random component
4.3.2.4 Summary table of contributory components
4.3.2.5 Expanded uncertainty for the spurious
emission test
4.4 Example 3: measurement of a receiver parameter
(sensitivity)
4.4.1 Uncertainty contributions: stage 1: transform
factor measurement
4.4.1.1 Contributions from the mismatch
components
4.4.1.2 Contributions from the individual
components
4.4.1.3 Contribution from the random component
4.4.1.4 Summary table of contributory
components
4.4.2 Uncertainty contributions: stage 2: EUT
measurement
4.4.2.1 Contributions from the mismatch
components
4.4.2.2 Contributions from the individual
components
4.4.2.3 Contribution from the random component
4.4.2.4 Summary table of contributory components
4.4.2.5 Expanded uncertainty for the receiver
sensitivity measurement
5 Examples of measurement uncertainty analysis (Stripline)
5.1 Introduction
5.2 Example 1: verification procedure
5.2.1 Uncertainty contributions: stage 1: direct
attenuation measurement
5.2.1.1 Contributions from the mismatch
components
5.2.1.2 Contributions from individual
components
5.2.1.3 Contribution from the random
component
5.2.1.4 Summary table of contributory components
5.2.2 Uncertainty contributions: stage 2: radiated
attenuation measurement
5.2.2.1 Contributions from the mismatch
components
5.2.2.2 Contributions from individual
components
5.2.2.3 Contribution from the random component
5.2.2.4 Summary table of contributory
components
5.2.2.5 Expanded uncertainty for the
verification procedure
5.3 Example 2: the measurement of a receiver parameter
(sensitivity)
5.3.1 Uncertainty contributions: stage 1: EUT
measurement
5.3.1.1 Contributions from the mismatch
components
5.3.1.2 Contributions from the individual
components
5.3.1.3 Contribution from the random component
5.3.1.4 Summary table of contributory components
5.3.2 Uncertainty contributions: stage 2: field
measurement using the results of the verification
procedure
5.3.2.1 Expanded uncertainty for the receiver
sensitivity measurement
5.3.3 Uncertainty contributions: stage 2: field
measurement using a monopole
5.3.3.1 Contributions from the mismatch
components
5.3.3.2 Contributions from the individual
components
5.3.3.3 Contribution from the random
component
5.3.3.4 Summary table of contributions
5.3.3.5 Expanded uncertainty for the receiver
sensitivity measurement
5.3.4 Uncertainty contributions: stage 2: field
measurement using three-axis probe
5.3.4.1 Contributions from the mismatch
components
5.3.4.2 Contributions from the individual
components
5.3.4.3 Contribution from the random component
5.3.4.4 Summary table of contributory components
5.3.4.5 Expanded uncertainty for the receiver
sensitivity measurement
6 Wash-up
6.1 Introduction
6.2 Considerations in testing
6.3 Measurement specifications
6.4 Specification limits
6.5 Conclusions
Annex A: Uncertainty contributions
A.1 Reflectivity
A.2 Mutual coupling
A.3 Range length
A.4 Corrections
A.5 Radio frequency cables
A.6 Phase centre positioning
A.7 Stripline
A.8 Ambient signals
A.9 Mismatch
A.10 Signal generator
A.11 Insertion losses
A.12 Antennas
A.13 Receiving device
A.14 Equipment under
A.15 Frequency counter
A.16 Salty man and salty-lite
A.17 Test Fixture
A.18 Random uncertainty
A.19 Summary, tables and figures
Annex B: Calculating means and standard deviations and
further theoretical support
B.1 Properties of distributions
B.1.1 Introduction
B.1.2 Mathematical tools and properties
B.2 Calculations
B.2.1 Rectangular distributions
B.2.2 Gaussian distributions
B.2.3 'U' shaped distributions
B.3 Reference to theoretical support for the
evaluation of measurement uncertainties,
including mathematical tools and properties
of distributions
Annex C: Mathematical transforms
C.1 Principles of derivation of formulas when
transforming from log to linear
C.1.1 A rectangular distribution in logarithmic
terms converted to linear terms
C.1.2 A triangular distribution in logarithmic
terms converted to linear terms
C.1.3 A rectangular distribution in linear terms
converted to logarithmic terms
C.2 Conversion factors
Annex D: Mismatch uncertainties
D.1 Introduction
D.1.1 Cascading networks
D.1.2 Mismatch uncertainty calculations
D.2 General approach
D.3 Networks comprising power combiners/splitters
Annex E: Antenna cabling measurements
E.1 Introduction
E.2 Experimental measurements
E.2.1 Measurement procedure
E.2.2 Discussion of results
Annex F: Near-field/far-field measurements
F.1 Introduction
F.2 Experimental measurements
F.3 Measurement procedure
F.4 Discussion of results
Annex G: Bibliography
History
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