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GB/T 15491-2008 English PDF

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US$419.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 15491-2008: Requirements and measurement methods of electrical performance for duplexers used in the mobile services
Status: Valid

GB/T 15491: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15491-2008	419	Add to Cart	3 days	Requirements and measurement methods of electrical performance for duplexers used in the mobile services	Valid
GB/T 15491-1995	439	Add to Cart	4 days	Performance requirements of electricity and methods of measurement for duplexers used in the mobile services	Obsolete

Similar standards

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Basic data

Standard ID: GB/T 15491-2008 (GB/T15491-2008)
Description (Translated English): Requirements and measurement methods of electrical performance for duplexers used in the mobile services
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: M37
Classification of International Standard: 33.120.01
Word Count Estimation: 18,147
Date of Issue: 2008-04-11
Date of Implementation: 2008-09-01
Older Standard (superseded by this standard): GB/T 15491-1995
Quoted Standard: GB/T 15844.2-1995
Regulation (derived from): Announcement of Newly Approved National Standards No. 6, 2008 (No. 119 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard provides mobile communications definitions of relevant terms diplexer, the main electrical performance requirements, test conditions and measurement methods. This standard applies to the operating frequency range of 25MHz ~ 2500MHz mobile communication facilities duplexer.

GB/T 15491-2008: Requirements and measurement methods of electrical performance for duplexers used in the mobile services

---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.
Requirements and measurement methods of electrical performance for duplexers used in the mobile services ICS 33.120.01 M37 National Standards of People's Republic of China Replacing GB/T 15491-1995 Mobile duplexer electrical performance requirements and methods of measurement Posted 2008-04-11 2008-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 2 electrical performance requirements 4.1 transceiver frequency interval 2 4.2 bandwidth, insertion loss, rejection and isolation 2 4.3 VSWR 3 4.4 Nominal impedance 3 4.5 Maximum input power 3 4.6 Operating temperature range 4 4.7 Frequency stability (temperature) 4 4.8 Connection 4 5 4 standard test conditions 5.1 Working Conditions 4 5.2 standard atmospheric conditions 4 6 Arbitration atmospheric conditions 4 7 5 Environmental requirements and test methods General requirements for measuring equipment 8 6 9 Measurement 6 6 9.1 Insertion Loss 9.2 rejection, isolation 7 9.3 VSWR 8 9.4 bandwidth and center frequency of 9 9.5 Frequency stability (temperature) 9 9.6 Maximum input power 10 Examples Appendix A (informative) Calculation band reject duplexer bandwidth 11 Annex B (informative) Example of calculation of bandwidth bandpass diplexer 12

Foreword

This standard is a revision of GB/T 15491-1995 conducted. The main content of the amendments are as follows. a) modify the duplexer frequency range; b) modify, add terminology duplexer; c) modify the duplexer electrical performance requirements; d) Modify the duplexer measurement methods; e) adding environmental requirements and test methods duplexer. The reference to the standard IEC 60489-8 "using a mobile device measurement for radio equipment - Part 8. antenna and auxiliary equipment Methods of measurement ", IEC /T CorSC. CS12F" IEC complementary measurement methods duplexer 489-8 of. " This standard replacement GB/T 15491-1995 "Mobile communication duplexer electrical performance requirements and test methods" from the date of publication. The standard proposed by the People's Republic of China Ministry of Information Industry. The standard by the China Electronics Standardization Institute. This standard drafting units. China Electronics Technology Group Corporation seventh Research Institute. Involved in the drafting of this standard. Guangzhou GCI Science & Technology Co., Ltd., Xi'an Space Star Technology Co., Ltd., Mobi Antenna Technology Surgery (Shenzhen) Co., Ltd. The main drafters. Zhang Jinan, Cao Jing, Liu Jianhua, Liu tsunami, Xiao He, yellow friend. Mobile duplexer electrical performance requirements and methods of measurement

1 Scope

This standard specifies the definitions of terms related to the mobile communications duplexer (hereinafter referred to as the duplexer), the main electrical performance requirements, test conditions and measurement Volume method. This standard applies to the frequency range of 25MHz ~ 2500MHz mobile communication facilities duplexer.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 15844.2-1995 FM radiotelephone mobile communication environment requirements and test methods

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 It allows the use of the same antenna at the same time achieve an apparatus for transmitting and receiving. Diplexer generally have three ports to connect a transmitter, receiver and antenna. Transmit port to the antenna port of the branch, said transmitting branch; day Line port to the receive port of said branch receiving branch. 3.2 Duplexer transmission branch for the degree of inhibition may go directly to the reception band transmitter output noise. 3.3 A duplexer for receiving fingers transmission band carrier level degree of isolation. 3.4 Transmitter output power and receiver input power through the transmission loss caused by the duplexer. 3.5 Diplexer predetermined resistive impedance of each port. 3.6 Vp voltage standing wave ratio SWR Diplexer two ports with a nominal impedance of the load connected to the other port is connected to a lossless transmission line and its load as the pass Transmission line maximum and minimum voltage standing wave ratio. 3.7 Holding duplexer electrical performance requirements specified ambient temperature range. 3.8 Meet rejection diplexer prescribed isolation, insertion loss frequency range, voltage standing wave ratio and other requirements of the transceiver frequency interval. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 15491-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 15491-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 15491-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 15491-2008_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.

Question 5: Should I purchase the latest version GB/T 15491-2008?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15491-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.