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JJF 1880-2020 English PDF

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US$599.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1880-2020: Gain Calibration Specification for Aperture Antennas from 250 MHz to 110 GHz (Extrapolation Method)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1880-2020	599	Add to Cart	4 days	Gain Calibration Specification for Aperture Antennas from 250 MHz to 110 GHz (Extrapolation Method)	Valid

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Basic data

Standard ID: JJF 1880-2020 (JJF1880-2020)
Description (Translated English): Gain Calibration Specification for Aperture Antennas from 250 MHz to 110 GHz (Extrapolation Method)
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A56
Word Count Estimation: 26,255
Date of Issue: 2020-11-26
Date of Implementation: 2021-05-26
Issuing agency(ies): State Administration for Market Regulation

JJF 1880-2020: Gain Calibration Specification for Aperture Antennas from 250 MHz to 110 GHz (Extrapolation Method)

---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.
Gain Calibration Specification for Aperture Antennas from 250 MHz to 110 GHz (Extrapolation Method) National Metrology Technical Specifications of the People's Republic of China 250MHz~110GHz mouth surface antenna gain Calibration specification (extrapolation) 2020-11-26 release 2021-05-26 implementation Issued by the State Administration for Market Regulation 250MHz~110GHz mouth surface antenna gain Calibration specification (extrapolation) ApertureAntennasfrom250MHzto 110GHz(ExtrapolationMethod) Focal point: National Radio Metrology Technical Committee Drafting unit: China Institute of Metrology This specification entrusts the National Radio Measurement Technical Committee to be responsible for interpretation Drafters of this specification: Li Jinyuan (China Institute of Metrology) Song Zhenfei (China Institute of Metrology) Liu Xiao (China Institute of Metrology)

Introduction (Ⅱ) 1 scope (1) 2 Reference documents (1) 3 Term (1) 3:1 Orifice antenna (1) 3:2 Extrapolation method (1) 3:3 Gain(1) 4 Overview (1) 5 Measurement characteristics (2) 6 Calibration conditions (2) 6:1 Environmental conditions (2) 6:2 Measurement standards and other equipment (2) 7 Calibration items and calibration methods (3) 7:1 Calibration items (3) 7:2 Calibration method (3) 8 Calibration result expression (6) 9 Recalibration interval (6) Appendix A Original Record Format (7) Appendix B: Internal page format of calibration certificate (11) Appendix C Example of Uncertainty Evaluation of Antenna Gain Calibration (12)

Introduction

This specification is based on JJF 1071-2010 "Rules for the Compilation of National Metrology and Calibration Specifications", JJF 1059:1-2012 "Measurement The requirements of "Evaluation and Expression of Uncertainty of Measurement" shall be compiled: The extrapolation method is currently recognized internationally as the most accurate method for measuring the gain of an aperture antenna: This specification adopts IEEE Std149-1979 (R2008) "IEEE Antenna Standard Test Procedures" regarding waiting Recommendations and requirements for the maximum gain of the antenna and the height of the antenna tower: This specification is released for the first time: 250MHz~110GHz mouth surface antenna gain Calibration specification (extrapolation)

1 Scope

This specification applies to standard gain horn antennas, corrugated horn antennas, The gain calibration of mouth antennas such as double ridge horn antennas and aperture waveguide probes, and the gain calibration of mouth antennas in other frequency bands Refer to this specification:

2 Reference documents

This specification refers to the following documents: CISPR16-1-6:2014 Regarding Radio Wave Disturbance and Immunity Measurement Equipment and Methods Part 1-6: Radio disturbance and anti-interference measurement equipment EMC antenna calibration (Specificationforradiodisturbanceandim- munitymeasuringapparatusandmethods-Part 1-6: Radiodisturbanceandimmunity measuringapparatus-EMCantennacalibration) IEEEStd145:2013 Definitions of Terms for Antennas (DefinitionsofTermsforAntennas) IEEEStd149-1979 (R2008) IEEE Standard Test Procedure for Antennas (IEEEStandardTest ProceduresforAntennas) For dated reference documents, only the dated version applies to this specification; for undated references The latest version (including all amendments) is applicable to this specification:

3 term

The following terms and definitions apply to this specification: 3:1 Apertureantenna An antenna with a large physical aperture: [IEEEStd145,4] 3:2 Extrapolation method A method of measuring antenna gain, which can correct the effect of multipath and close-range effects on the antenna gain measurement results: influences: Note: The extrapolation method is also called the three-antenna extrapolation method or the generalized three-antenna method: [IEEEStd149,12:2:4] 3:3 gain The radiation intensity of the antenna in a given direction and the net power fed into the antenna are radiated uniformly in all directions: The ratio of the intensity of the shot: When the direction is not specified, it defaults to the direction of the maximum radiation intensity of the antenna:

4 overview

The antenna is the basic component of the radio system, which is used to realize the transformation of the electromagnetic field in the space electromagnetic field and the guided wave structure: change: Antennas are widely used in fields such as communications, navigation, remote sensing, and broadcasting: Gain is an important parameter of the antenna ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1880-2020_English be delivered?

Answer: Upon your order, we will start to translate JJF 1880-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1880-2020_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1880-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.