GB/T 40602.3-2023Antennas and reception systems for radio interference—Part 3: Test site measurement—Performance test method of compact range (English PDF)
天线及接收系统的无线电干扰 第3部分：场地测量 紧缩场场地性能确认方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 7, 2023
Implementation date
September 7, 2023
Scope
GB/T 40602.3-2023 is the English-translated version of 天线及接收系统的无线电干扰 第3部分：场地测量 紧缩场场地性能确认方法.
GB/T 40602.3-2023 is Part 3 of GB/T 40602 and confirms the performance of a compact antenna test range over the working frequency range 0.6 GHz to 110 GHz; other ranges may use it for reference.
It defines the compact range, the quiet zone, the taper and the ripple, and sets the general requirements on the measurement environment, the power supply and the site, and the measurement system with its equipment.
It then fixes the frequency bands and points to be measured, the test steps, the data processing and the site indicators, the test report and the safety protection requirements and measures.
What is confirmed is the shielding effectiveness and the field, phase and cross-polarization behaviour of the quiet zone. It cites GB 8702-2014 and GB/T 12190-2021, was issued on 7 September 2023 and has applied since 7 September 2023.
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Document preview — GB/T 40602.3-2023
National Standard of the People's Republic of China
- ICS
- 33.100
- Classification
- L 06
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- PrefaceI
- Introduction
- 1 Scope
- 2 Normative reference documents
- 3 Terms and Definitions
- 4 General requirements
- 4.1 Overview
- 4.2 Measurement environment requirements
- 4.3 Power requirements
- 4.4 Measurement site requirements
- 5 Measurement system
- 5.1 System block diagram
- 5.2 Measuring equipment
- 6 Measurement methods
- 6.1 Overview
- 6.2 Measurement frequency band and measurement frequency point
- 6.3 Test step
- 6.4 Data processing
- 6.5 Site indicators
- 7 Test Report
- 8 Safety protection
- 8.1 Safety protection requirements
- 8.2 Safety protection measures
- Reference
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.
This document is Part 3 of GB/T (Z) 40602 "Radio Interference from Antennas and Receiving Systems". GB/T (Z)40602 has been issued The following parts have been published.
---Part 1: Indoor far-field measurement method for basic measurement of antenna pattern;
---Part 2: Basic measurement method of indoor plane near-field measurement of high-gain antenna pattern;
---Part 3: Site measurement and compaction site performance confirmation methods;
---Part 4: Test methods for electromagnetic compatibility of electronic equipment with integrated wireless modules in wireless receiving systems.
Introduction
The radio interference of antennas and receiving systems is based on the "antenna" (invisible antenna-wireless receiving system) as the entry point to establish antennas and radio Electromagnetic compatibility standards for receiving systems, covering antennas, measurement sites and wireless receiving systems.
GB/T (Z) 40602 "Radio Interference from Antennas and Receiving Systems" is intended to consist of four parts.
---Part 1: Indoor far-field measurement method for basic measurement of antenna pattern. The purpose is to specify the antenna radiation pattern in micro Measurement method for equal elevated far fields in anechoic chambers.
---Part 2: Basic measurement method of indoor plane near-field measurement of high-gain antenna pattern. The purpose is to specify high gain antennas Planar near-field scanning method is a method for measuring antenna pattern in a microwave anechoic chamber.
---Part 3: Site measurement and compression site performance confirmation method. The purpose is to specify the compact field shielding effectiveness and static field radiation characteristics, phase characteristics and cross-polarization performance.
---Part 4: Test methods for electromagnetic compatibility of electronic equipment with integrated wireless modules in wireless receiving systems. The purpose is to provide for industrial use Electromagnetic compatibility test requirements and test methods for integrated wireless module electronic equipment such as industrial, scientific, medical, automotive, and household appliances.
GB/T (Z) 40602 and GB/T 38889 together constitute the radio interference standard system for antennas and receiving systems.
1 Scope
This document specifies the methods for confirming the performance of compaction sites, including general requirements, measurement systems, measurement methods, test reports and safety protection requirements, etc.
This document is suitable for confirmation of compact field performance in the operating frequency range of 0.6GHz~110GHz. For other frequency ranges, refer to use.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.
GB 8702-2014 Electromagnetic environment control limits
GB/T 12190-2021 Method for measuring shielding effectiveness of electromagnetic shielding rooms
3 Terms and definitions
The following terms and definitions as defined in GB 8702-2014 and GB/T 12190-2021 apply to this document.
3.1 Compact range
Using reflective surfaces or dielectric lenses combined with shielding and absorbing materials, the electromagnetic waves generated by the feed source are converted into plane waves at a short distance. Measurement site for free-space far-field conditions for quasi-plane wave irradiation.
3.2 Quiet zone
It is usually an area where the device under test is placed in a compact field, where the clutter reflection of electromagnetic waves is controlled to the design level.
3.3 Taper
Quantitatively describes an electromagnetic field distribution that decreases from the central axis to the edge, and the amplitude decreases from the central axis to the edge.
Note 1: On the quiet zone field distribution curve, it refers to the difference between the maximum value and the minimum value of the curve.
Note 2: Divided into amplitude taper and phase taper.
3.4 Ripple
It presents a random, nearly periodic, wave-like distribution unevenness.
Note 1: Divided into amplitude ripple and phase ripple.
Note 2: In the results of the quiet zone field distribution, the least squares method is used to fit the quadratic curve according to the original curve, and then the original curve and the quadratic curve are compared at different positions. Find the difference between lines, and use the largest difference as the ripple index.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB 8702-2014 — Controlling limits for electromagnetic environment
GB/T 12190-2021 — Method for measuring the shielding effectiveness of electromagnetic shielding enclosures
GB/T 40602.1-2021 — Antennas and reception systems for radio interference—Part 1: Basic measurement—Method for far field measuring in microwave anechoic chamber
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