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GB/T 6113.104-2021: Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites for radiated disturbance measurements Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 6113.104: Historical versions
Similar standardsGB/T 6113.104-2021: Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites for radiated disturbance measurements---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT6113.104-2021 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 33.100 CCS L 06 GB/T 6113.104-2021 / CISPR 16-1-4.2019 Replacing GB/T 6113.104-2016 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods – Part 1-4.Radio Disturbance and Immunity Measuring Apparatus – Antennas and Test Sites for Radiated Disturbance Measurements (CISPR 16-1-4.2019, IDT) Issued on. DECEMBER 31, 2021 Implemented on. JULY 01, 2022 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 4 Introduction... 8 1 Scope... 9 2 Normative References... 9 3 Terms, Definitions and Abbreviated Terms... 10 3.1 Terms and definitions... 10 3.2 Abbreviated terms... 16 4 Antennas for Measurement of Radiated Radio Disturbance... 16 4.1 General... 16 4.2 Physical parameter (measurand) for radiated disturbance measurements... 17 4.3 Antennas for the frequency range 9 kHz ~ 150 kHz... 17 4.4 Antennas for the frequency range 150 kHz ~ 30 MHz... 18 4.5 Antennas for the frequency range 30 MHz ~ 1 000 MHz... 19 4.6 Antennas for the frequency range 1 GHz ~ 18 GHz... 26 4.7 Special antenna arrangements – large-loop antenna system... 28 5 Test Sites for Measurement of Radio Disturbance Field Strength for the Frequency Range of 9 kHz ~ 30 MHz... 29 6 Test Sites for Measurement of Radio Disturbance Field Strength for the Frequency Range of 30 MHz ~ 1 000 MHz... 29 6.1 General... 29 6.2 OATS... 29 6.3 Suitability of other test sites... 32 6.4 Test site validations... 33 6.5 Basic parameters of the NSA method for OATS and SAC... 34 6.6 Reference site method for OATS and SAC... 38 6.7 Validation of an OATS by the NSA method... 45 6.8 Validation of a weather-protection-enclosed OATS or a SAC... 48 6.9 Possible causes for exceeding site acceptability limits... 51 6.10 Site validation for FARs... 51 6.11 Evaluation of set-up table and antenna tower... 60 7 Test Sites for Measurement of Radio Disturbance Field Strength for the Frequency Range 1 GHz ~ 18 GHz... 63 7.1 General... 63 7.2 Reference test site... 63 7.3 Test site validation... 64 7.4 Antenna requirements for SVSWR standard test procedure... 66 7.5 Required positions for site validation testing... 69 7.6 SVSWR site validation – standard test procedure... 75 7.7 SVSWR site validation – reciprocal test procedure using an isotropic field probe... 77 7.8 SVSWR conditional measurement position requirements... 78 7.9 SVSWR site validation test report... 79 7.10 Limitations of the SVSWR site validation method... 79 7.11 Alternative test sites... 79 8 Common Mode Absorption Devices... 80 8.1 General... 80 8.2 CMAD S-parameter measurements... 80 8.3 CMAD test jig... 80 8.4 Measurement method using the TRL calibration... 81 8.5 Specification of ferrite clamp-type CMAD... 84 8.6 CMAD performance (degradation) check using spectrum analyzer and tracking generator... 85 9 Reverberating Chamber for Total Radiated Power Measurement... 87 9.1 General... 87 9.2 Chamber... 87 10 TEM Cells for Immunity to Radiated Disturbance Measurement... 90 Annex A (Normative) Parameters of Antennas... 91 Annex B... 98 Annex C (Normative) Large-Loop Antenna System for Magnetic Field Induced- Current Measurements in the Frequency Range of 9 kHz ~ 30 MHz... 99 Annex D (Normative) Construction Details for Open Area Test Sites in the Frequency Range of 30 MHz ~ 1 000 MHz (see Clause 6)... 110 Annex E... 114 Annex F (Informative) Basis for ± 4 dB Site Acceptability Criterion (see Clause 6) ... 115 Annex G (Informative) Examples of Uncertainty Budgets for Site Validation of a COMTS using RSM with a Calibrated Antenna Pair (see 6.6)... 117 Bibliography... 120ForewordThis document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization – Part 1.Rules for the Structure and Drafting of Standardizing Documents. GB/T(Z) 6113 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods is the basic standard for electromagnetic compatibility. This Document is Part 1-4 of GB/T (Z) 6113.GB/T (Z) 6113 has published the following parts. Part 1.Radio Disturbance and Immunity Measuring Apparatus --- Part 1-1.Radio Disturbance and Immunity Measuring Apparatus – Measuring Apparatus; --- Part 1-2.Radio Disturbance and Immunity Measuring Apparatus – Coupling Devices for Conducted Disturbance Measurements; --- Part 1-3.Radio Disturbance and Immunity Measuring Apparatus – Ancillary Equipment – Disturbance Power; --- Part 1-4.Radio Disturbance and Immunity Measuring Apparatus – Antennas and Test Sites for Radiated Disturbance Measurements; --- Part 1-5.Radio Disturbance and Immunity Measuring Apparatus – Antenna Calibration Sites and Reference Test Sites for 5MHz ~ 18GHz; --- Part 1-6.Radio Disturbance and Immunity Measuring Apparatus – EMC Antenna Calibration. Part 2.Methods of Measurement of Radio Disturbance and Immunity --- Part 2-1.Methods of Measurement of Radio Disturbance and Immunity – Conducted Disturbance Measurement; --- Part 2-2.Methods of Measurement of Radio Disturbance and Immunity – Measurement of Disturbance Power; --- Part 2-3.Methods of Measurement of Radio Disturbance and Immunity – Radiated Disturbance Measurements; --- Part 2-4.Methods of Measurement of Radio Disturbance and Immunity – Immunity Measurement; --- Part 2-5.On-site Measurement of Disturbance Emission from Large Equipment. Part 3.CISPR Technical Reports --- Part 3.CISPR Technical Reports. Part 4.Uncertainties, Statics and Limit Modelling --- Part 4-1.Uncertainties, Statics and Limit Modelling - Uncertainty of Standardized EMC Testing; --- Part 4-2.Uncertainties, Statics and Limit Modelling – Measurement Instrumentation Uncertainty; --- Part 4-3.Uncertainties, Statics and Limit Modelling - Statistical Considerations for the Determination of EMC Compliance of Bulk Products; --- Part 4-4.Uncertainties, Statics and Limit Modelling – Complaint Statistics and Calculation Model of Limits; --- Part 4-5.Uncertainties, Statics and Limit Modelling – Conditions of Use for Alternative Test Methods. This Document replaced GB/T 6113.104-2016 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods - Part 1-4.Radio Disturbance and Immunity Measuring Apparatus – Antennas and Test Sites for Radiated Disturbance Measurements. Compared with GB/T 6113.104-2016, the major technical changes of this Document are as follows besides the structural adjustment and editorial modifications. --- Add three terms such as "tested equipment space", etc.; and delete the term "free space antenna coefficient" (see 3.1 of this Edition; 3.1 of 2016 Edition); --- Change the measurement method of antenna symmetry (see 4.5.4 of this Edition; 4.5.4 of 2016 Edition); --- Change the measurement method of cross-polarization (see 4.5.5 of this Edition; 4.5.5 of 2016 Edition); --- Increase the lobe pattern requirements of the 1GHz~18GHz receiving antenna (see 4.6.2.2 and 4.6.2.3 of this Edition); --- Increase the NSA value for the measurement distance of 5m (see 6.5.1 of this Edition); --- Change the relevant content of Annex A (see Annex A of this Edition; Annex A of 2016 Edition); --- Delete the main text of Annex B (see Annex B of 2016 Edition). This Document used the translation method to equivalently adopt CISPR 16-1-4.2019 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods – Part 1-4.Radio Disturbance and Immunity Measuring Apparatus – Antennas and Test Sites for Radiated Disturbance Measurements. The Chinese documents that have a consistent correspondence with the international documents normatively cited in this Document are as follows. --- GB/T 4365-2003 Electrotechnical Terminology - Electromagnetic Compatibility (IEC 60050(161).1990+A1.1997+A2.1998, IDT); --- GB/T 6113.101-2021 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods - Part 1-1.Radio Disturbance and Immunity Measuring Apparatus - Measuring Apparatus (CISPR 16-1-1.2019, IDT); --- GB/T 6113.105-2018 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods - Part 1-5.Radio Disturbance and Immunity Measuring Apparatus - Antenna Calibration Sites and Reference Test Sites for 5 MHz ~ 18 GHz (CISPR 16-1-5.2014, IDT); --- GB/T 6113.106-2018 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods - Part 1-6.Radio Disturbance and Immunity Measuring Apparatus -EMC Antenna Calibration (CISPR 16-1-6.2014, IDT); --- GB/Z 6113.3-2019 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods - Part 3.CISPR Technical Reports (CISPR/TR 16- 3.2010+A1.2012+A2.2015, IDT); --- GB/T 6113.402-2018 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods - Part 4-2.Uncertainties, Statistics and Limit Modelling - Measurement Instrumentation Uncertainty (CISPR/TR 16-4-2.2014, IDT). The following editorial modifications have been made to this Document. --- International Standard Terminology 3.1.14, according to the given expression, the S parameter is defined as the transmission line parameter S21. Please note some contents of this Document may involve patents. The issuing agency of this Document shall not assume the responsibility to identify these patents. This Standard was proposed by and under the jurisdiction of National Technical Committee on Radio Interference Standardization Administration of China (SAC/TC 79). Drafting organizations of this Standard. China Electronics Standardization Institute; Beijing Daze Technology Co., Ltd.; Hao Feng Radio Frequency Technology (Shanghai) Co., Ltd.; Xiamen H-Noble Technology Co., Ltd.; Beijing University of Posts and Telecommunications; National Institute of Metrology, China; Southeast University; Hefei Supervising & Testing Research Institute for Product Quality; Alto RF Technology (Shanghai) Co., Ltd.; Guangzhou CEPREI Calibration and Testing Center Service Co., Ltd.; China Automotive Engineering Research Institute Co., Ltd.; Beijing Kehuan Century EMC Technology Limited Liability Company; CATARC Automotive Test Centre (Tianjin) Co., Ltd.; State Radio Monitoring Center Testing Center; Dalian Product Quality Inspection and Testing Institute Co., Ltd.; Fujian Metrology Institute; Jiashan Frankonia EMC Co., Ltd.; Nanjing Rflight Communication Electronics Co., Ltd.; CHEARI (Beijing) Certification & Testing Co., Ltd.; Shenzhen NTEK Testing Technology Co., Ltd.; Beijing Institute of Technology; China Electric Power Research Institute Co., Ltd.; Jiangsu Institute of Metrology; Guangzhou Zhongce Electronic Technology Co., Ltd.; Guangdong CQC South China Testing Technology Co., Ltd.; Beijing Institute of Radio Metrology & Measurement; Guangzhou Changen Electronic Technology Co., Ltd.; MIIT Fifth Electronics Research Institute; Zhejiang Noyetec Technology Co., Ltd.; Shanghai Testing & Inspection Institute for Electrical Equipment Co., Ltd.; Jiangsu Electronic Information Product Quality Supervision & Inspection Institute; Shenzhen Dongsheng RF Technology Co., Ltd.; Shenzhen Heyou Technology Co., Ltd.; China Academy of Information and Communications Technology; and Beijing Zunguan Science & Technology Co., Ltd. Chief drafting staffs of this Standard. Cui Qiang, Li Li, Xie Ming, Ye Chang, Zhou Zhongyuan, Meng Donglin, Fu Jun, Yang Xinchun, Li Lijia, Huang Minchang, Liu Xiao, Chen Yan, Huang Xuemei, Wang Lindong, Guo Yu, Xu Dan, Xiao Nali, Zhou Lei, Shang Gaoping, Wang Xi, Shi Lei, Li Guanghua, Zhai Li, Li Ni, Jiang Guokai, Li Baoting, Yang Nan, Yang Chunrong, Lu Yanhan, Liang Jiming, Ma Weiyu, Li Nan, Zheng Yimin, Zhang Fengxie, Chu Rui, Chen Jiasheng, Zhang Jinku, Wan Changyong, Zang Jiewei, and Xu Chunfeng. The historical editions replaced by this Document are as follows. --- GB/T 6113.104-2008 was first-time published in 2008; first-time revised in 2016; --- It is the second-time revised hereby.1 ScopeThis Document specifies the characteristics and performance of equipment for the measurement of radiated disturbances in the frequency range 9 kHz ~ 18 GHz. Specifications for antennas and test sites are included. NOTE. In accordance with IEC Guide 107, CISPR 16-1-4 is a basic EMC publication for use by product2 Normative ReferencesThe provisions in following documents become the essential provisions of this Document through reference in this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document. GB/T 6113.203-2020 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods - Part 2-3.Methods of Measurement of Radio Disturbance and Immunity – Radiated Disturbance Measurements (CISPR 16-2-3.2016, IDT)3 Terms, Definitions and Abbreviated TermsFor the purposes of this Document, the terms, definitions and abbreviated terms given in CISPR 16-1-1, CISPR 16-1-5, IEC 60050-161 and the following apply.4 Antennas for Measurement of Radiated Radio DisturbanceFor measurement of the magnetic component of the radiation, either an electrically-screened loop antenna of dimension such that the antenna can be completely enclosed by a square having sides of 60 cm in length, or an appropriate ferrite-rod antenna, may be used. In the frequency range 9 kHz ~ 30 MHz, the interference capability of the magnetic field component of the radiation of a single EUT can be determined by using a large-loop antenna system (LLAS).5 Test Sites for Measurement of Radio Disturbance FieldStrength for the Frequency Range of 9 kHz ~ 30 MHz (Void)6 Test Sites for Measurement of Radio Disturbance Field Strength for the Frequency Range of 30 MHz ~ 1 000 MHzWeather protection is desirable if the test site is used throughout the year. A weather protection structure can protect either the entire test site (including EUT and field-strength measuring antenna) or the EUT only. The materials used shall be RF–transparent, to preclude undesirable reflections and attenuation of the emitted field from the EUT (see 6.3.1). To minimize these effects, the SA is measured at several antenna pair positions, and an average value is calculated. This average value will converge to the SA of an ideal site. 7 Test Sites for Measurement of Radio Disturbance Field Strength for the Frequency Range 1 GHz ~ 18 GHz Test sites used for measurements in the 1 GHz ~ 18 GHz range shall have a design that minimizes the influence of reflections upon the received signal; for example, an anechoic chamber. Any test site that achieves free-space conditions is a possible alternative test site.8 Common Mode Absorption DevicesThe effects on CMAD measurement results from the adaptor sections and the adaptor ports can be eliminated by using the TRL calibration method described in 8.4, providing a low uncertainty for the final measurements. Any type of adaptor may be used for the measurements of 8.4. Examples of adaptors are shown in Figures 29 to 31 (see 8.6). Ferrite clamp-type CMADs are used during radiated disturbance measurements below 1 GHz for the purpose of reducing compliance uncertainty.9 Reverberating Chamber for Total Radiated Power MeasurementThe walls and the stirrers shall be metallic. Joints between the metallic members shall be mechanically sound and of low electrical resistance along the whole length, and there shall be no surface corrosion. No absorbing material, such as wood, shall be placed inside the chamber. The following describes two examples of stirrers. Other shapes are permitted, provided stirring efficiency meets the criteria in 9.2.4. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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