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GB/T 35001-2018 English PDF

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GB/T 35001-2018: Microwave circuits -- Measuring methods for noise source
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Basic data

Standard ID GB/T 35001-2018 (GB/T35001-2018)
Description (Translated English) Microwave circuits -- Measuring methods for noise source
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard L58
Classification of International Standard 31.200
Word Count Estimation 10,169
Date of Issue 2018-03-15
Date of Implementation 2018-08-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 35001-2018: Microwave circuits -- Measuring methods for noise source

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Microwave circuits--Measuring methods for noise source ICS 31.200 L58 National Standards of People's Republic of China Microwave circuit noise source test method Published by.2018-03-15 2018-08-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration released Directory Preface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General requirements 1 4.1 Test Conditions and Environmental Requirements 1 4.2 Test Instruments and Equipment 1 4.3 Precautions 1 5 Detailed Request 2 5.1 Super-noise ratio (ENR) 2 5.2 Super-noise ratio flatness (ΔENR) 3 5.3 Super Noise Ratio Temperature Coefficient (αENR) 4 5.4 Insertion Loss (Li) 5 5.5 Voltage Standing Wave Ratio (VSWR) 6

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the content in this document may involve patents. The issuing agency of this document does not assume responsibility for identifying these patents. This standard was proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This standard is under the jurisdiction of the National Semiconductor Device Standardization Technical Committee (SAC/TC78). This standard was drafted by. China Electronics Technology Group Corporation No. 55 Institute, China Electronics Standardization Institute, China Shipbuilding Heavy Industry Group 724 Research Institute. The main drafters of this standard. Wang Ying, Li Hong, Zhou Jun, Ge Fulan. Microwave circuit noise source test method

1 Scope

This standard specifies the test methods for the main electrical parameters of noise sources. This standard applies to electrical parameter testing of noise sources.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 12179-2013 noise generator general specification Technical requirements of GJB3007A-2009 antistatic working area GJB8125-2013 Microwave Circuit Amplifier Test Method

3 Terms and definitions

The following terms and definitions as defined in GB/T 12179-2013 and GJB 8125-2013 apply to this document. 3.1 Super-noise ratio temperature coefficient excessnoiseratiotemperaturecoefficient αENR In the operating temperature range, the coefficient of variation of the supernoise ratio with temperature.

4 General requirements

4.1 Test Conditions and Environmental Requirements Unless otherwise specified, all tests shall be at a temperature of 25 °C ± 3 °C, a relative humidity of 20% ~ 80% and a pressure of 86 kPa ~ Under 106kPa conditions. The test environment should have no mechanical vibration and electromagnetic interference that will affect the accuracy of the results. The standard atmospheric conditions for the arbitration test were. temperature 25°C±1°C, relative humidity 48%~52%, and air pressure 86kPa~106kPa. 4.2 Test Instruments and Equipment Test equipment and equipment should meet the following requirements. a) The test equipment shall be certified, calibrated and within the valid period of measurement; b) The range and accuracy of test instruments and equipment should meet the test requirements; c) The instrument and equipment should be well grounded during testing; d) Unless otherwise specified, the input and output impedance of the coaxial system shall be 50Ω; e) Anti-static facilities shall meet the requirements of GJB3007A-2009. 4.3 Precautions The precautions for the test are as follows.

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