YD/T 3182-2016 in English

SUPERSEDED

Testing method for antenna measurement fields

Issued on:2016-10-22
Implemented on:2017-01-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $430.00
$418.00

Standard No:	YD/T 3182-2016
Document status:	SUPERSEDED
Superseded by:	YD/T 3182-2021 Testing method for antenna measurement fields
Superseded on:	2021-04-01
Title in English:	Testing method for antenna measurement fields
Title in Chinese:	天线测量场地检测方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2016-10-22
Implemented on:	2017-01-01
Professional Classification:	YD-Telecommunication
Related Topics:	Measurement and detection Measurement and detection Measurement/Detection sky site sio2 detection method survey line measuring site test method Field measuring instrument How to measure the balance Balance measurement method Detection method linear Method detection principle Multiple testing sites Aerospace Antenna Test Method Antenna measurement Trace zinc detection method linear detection method Linearity detection method Surface water detection method Methods of Measuring Field Potential radio detection method wide field detection Classification of detection methods Field Lens Measurement Method Surface Water Measurement Methods Everyday Casino Measuring principle Local special gas detection day+ land surveying method land surveying method antenna Straightness measurement methods and detection tools YD/T 3182 Z-axis motion direction line straightness measurement method and detection tools Measurement Methods of Electronic Balances Ground detection method How a balance measures mass Oil absorption detection method Ground wire detection method Full transfer method to detect content Antenna measurement site detection method Commonly used quantitative detection methods Antenna measurement system Ground wire detection method How to choose the necropsy site? Measurement methods and detection tools for inner hole straightness Acid mist online detection method Balance measurement method Mitochondrial activity detection method Detection method of digoxin content yd/t 3096-2016 yd/t 3168-2016 Electronic balance measurement methods Methods for detecting line dew point

本标准规定了对移动通信天线测量场地性能的检测方法，给出测量场地性能要求与天线测量精度要求的对照关系，同时规定了移动通信系统天线测量场地检测方法的术语定义、分类、要求、测试方法和试验方法以及天线测试场地所用标准天线校验方法。本标准适用于工作频段为698MHz～2700MHz的移动通信系统天线测量场地。450MHz～698MHz和2700MHz～6GHz等其它频段的天线测量场地也可参照使用。

Introduction

Analysis of the core content of the standard

Test items	Far field measurement	Near field measurement	Compact field measurement
Reflection level detection	Free space VSWR method (main) Radiation parameter comparison method (backup)	Directional pattern comparison method (main) VSWR method (backup)	Directional pattern comparison method (main) VSWR method (backup)
Key indicators	Quiet zone reflection level ≤-40dB Amplitude fluctuation ≤±1.5dB	Probe amplitude consistency ≤ 0.5dB Phase consistency ≤ 5°	Amplitude and phase taper ≤ 3dB Cross polarization ≥ 30dB

Technology evolution and standard background

This standard systematically integrates the detection system of mobile communication antenna sites for the first time. The breakthrough is reflected in:

Innovatively quantifies the quiet zone performance of microwave anechoic chamber into measurable reflection level parameters
Establish a mathematical model of the three elements of the aperture field (amplitude fluctuation, taper, and polarization difference)
Propose an amplitude and phase consistency detection algorithm for near-field multi-probe systems

Detailed explanation of core detection methods

1. Free space voltage standing wave ratio method

By measuring The standing wave curve of the horn antenna on the longitudinal/lateral/vertical travel line is used to calculate the reflection level according to the formula: R = 20lg(E_r/E_d) = A + 20lg[(10^D/20+1)/(10^D/20-1)] Where D is the peak-to-valley difference of the measurement curve, and A is the correction value of the antenna pattern.

2. Key points for the implementation of the pattern comparison method

Test layout: The distance between the transmitting and receiving antennas is ≥2D²/λ (D is the antenna diameter)
Data sampling: Azimuth interval ≤5°, position movement step ≤λ/8
Typical judgment criteria: 30°/-60° pattern deviation＞3dB requires site recalibration

Site classification implementation suggestions

Grade	Applicable scenarios	Reflection level requirements	Detection period
Grade A	Operator network access detection	≤-45dB	6 months
Grade B	R&D Verification	≤-40dB	12 months

Solutions to Common Problems

Problem:Inconsistent probe response in near-field measurement
Measures:Perform a three-point calibration according to Appendix C of the standard and establish the probe compensation matrix:

[P_comp] = [P_meas]×[Cal_mat]^-1

More samples: JGJ 94-2008 GB 50021-2001(2009) GB 18306-2015

Sample only — not a preview of YD/T 3182-2016

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