1、INTERNATIONALSTANDARDIEC60489-81984AMENDMENT 12000-10Amendment 1Methods of measurement for radio equipmentused in the mobile servicesPart 8:Methods of measurement for antennasand ancillary equipmentAmendement 1Mthodes de mesure applicables au matrielde radiocommunication utilis dans les service mobi
2、les Partie 8:Mthodes de mesure applicables aux antenneset matriels accessoiresPRICE CODE IEC 2000 Copyright-all rights reservedInternational Electrotechnical Commission3,rue de Varemb Geneva,SwitzerlandTelefax:+41 22 919 0300e-mail:inmailiec.ch IEC web site http:/www.iec.chUFor price,see current cat
3、alogue Commission Electrotechnique Internationale International Electrotechnical CommissionLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60489-8 Amend.1 IEC:2000(E)FOREWORDThis amendment has been prepared by IEC technical committee
4、 102:Equipment used in radiocommunications for mobile services and for satellite communication systems.The text of this amendment is based on the following documents:FDISReport on voting102/62/FDIS102/63/RVDFull information on the voting for the approval of this amendment can be found in the report
5、onvoting indicated in the above table.A bilingual version of this amendment may be issued at a later date._Amend the title of this standard on the cover page,the title page and on pages 5 and 9 asfollows:Part 8:Methods of measurement for antennas and ancillary equipmentPage 3CONTENTSAdd the title of
6、 the following new clause 9 in Section two:9 Measurement of duplexersAdd the following new section and annexes.Section three Vehicular antennas and conditions10Supplementary definitions and conditions11Standing-wave ratio12Radiation pattern13Relative antenna gainLICENSED TO MECON Limited.-RANCHI/BAN
7、GALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60489-8 Amend.1 IEC:2000(E)3 14Antenna power rating15Measurement of electrical performance parameter underadverse environmental conditionsAnnex C(normative)Ground-plan test mountingAnnex D(normative)Standard antenna for moun
8、ting on a ground planeAnnex E(normative)Requirements for test equipment in power rating measurementPage 9Replace the text of clauses 1 and 2 as follows:1 ScopeThis International Standard refers specifically to the antennas and ancillary equipment used inthe mobile services.This standard is intended
9、to be used in conjunction with IEC 60489-1.The supplementary terms and definitions and the conditions of measurement set forth in thisstandard are intended for type tests and may also be used for acceptance tests.2 ObjectThe object of this standard is to standardize the definitions,the conditions an
10、d the methods ofmeasurement used to ascertain the performance of antennas and ancillary equipment(for example,duplexer)within the scope of this standard and to make possible a meaningfulcomparison of the results of measurements made by different observers on differentequipment.Page 19Add the followi
11、ng new clause 9 and new figures after subclause 8.4:9 Measurement of duplexers9.1 General9.1.1 Supplementary terms and definitionsFor the purposes of this standard,the following supplementary terms and definitions apply.LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONL
12、Y,SUPPLIED BY BOOK SUPPLY BUREAU.4 60489-8 Amend.1 IEC:2000(E)9.1.1.1duplexerdevice allowing the same antenna to be used for simultaneous transmission and receptionIEV 712-06-16NOTE There are three terminals which are connected to the transmitter,the receiver and the antenna respectivelyin a duplexe
13、r.The branch from the transmitting terminal to the terminal of the antenna is referred to as thetransmitting branch.The branch from the terminal of the antenna to the receiving terminal is referred to as thereceiving branch.9.1.1.2frequency stability(temperature)drift characteristic of the extreme f
14、requency at which the specified duplexer performance issatisfied,with temperature.It is expressed as parts per million per centigrade(106/C).The duplexer performance(for example,transmitter noise suppression-ability,transmitter-to-receiver isolation-ability,insertion loss and SWR)should be measured
15、under the condition ofspecified temperature range and more than specified frequency range9.1.2standard test conditionunless otherwise specified,all measurements should be performed under the general testconditions as stated in IEC 60489-1 and the supplementary test conditions given below9.1.3 Supple
16、mentary test conditions9.1.3.1test loadnon-radiating load with an impedance and power rating specified by the duplexer manufacturer9.1.3.2connections to the measuring equipmentcare must be taken to ensure that measuring equipment does not adversely affect the duplexerloading conditions9.2 Transmitter noise suppression-ability9.2.1 DefinitionThe ability of the duplexer to suppress the transmitter noise on the frequency band of thereceiver,so as to prevent the desired performance of the receiver f
