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 Commission 3, rue de Varemb Geneva, SwitzerlandTelefax: +41 22 919 0300 e-mail: inmailiec.ch IEC web site http:/www.iec.chUFor price, see cu
3、rrent catalogueCommission Electrotechnique InternationaleInternational Electrotechnical CommissionCopyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 2 60489-8 Amend. 1 IEC:2000(
4、E)FOREWORDThis amendment has been prepared by IEC technical committee 102: Equipment used in radiocommunications for mobile services and for satellite communication systems.The text of this amendment is based on the following documents:FDIS Report on voting102/62/FDIS 102/63/RVDFull information on t
5、he voting for the approval of this amendment can be found in the report 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 meas
6、urement for antennas and ancillary equipmentPage 3CONTENTSAdd the title of the following new clause 9 in Section two:9 Measurement of duplexersAdd the following new section and annexes.Section three Vehicular antennas and conditions10 Supplementary definitions and conditions11 Standing-wave ratio12
7、Radiation pattern13 Relative antenna gainCopyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-60489-8 Amend. 1 IEC:2000(E) 3 14 Antenna power rating15 Measurement of electrical per
8、formance parameter underadverse environmental conditionsAnnex C (normative) Ground-plan test mountingAnnex D (normative) Standard antenna for mounting on a ground planeAnnex E (normative) Requirements for test equipment in power rating measurementPage 9Replace the text of clauses 1 and 2 as follows:
9、1 ScopeThis International Standard refers specifically to the antennas and ancillary equipment used inthe mobile services.This standard is intended to be used in conjunction with IEC 60489-1.The supplementary terms and definitions and the conditions of measurement set forth in thisstandard are inten
10、ded for type tests and may also be used for acceptance tests.2 ObjectThe object of this standard is to standardize the definitions, the conditions and the methods ofmeasurement used to ascertain the performance of antennas and ancillary equipment(for example, duplexer) within the scope of this stand
11、ard and to make possible a meaningfulcomparison of the results of measurements made by different observers on differentequipment.Page 19Add the following 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
12、 this standard, the following supplementary terms and definitions apply.Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 4 60489-8 Amend. 1 IEC:2000(E)9.1.1.1duplexerdevice al
13、lowing 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 duplexer. The branch from the transmitting terminal to the terminal of the antenna is referr
14、ed 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 frequency at which the specified duplexer performance issatisfied, with temperature
15、. 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 under the condition ofspecified temperature range and more than specified
16、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 Supplementary test conditions9.1.3.1test loadnon-radiating load with an impedan
17、ce 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
18、 suppress the transmitter noise on the frequency band of thereceiver, so as to prevent the desired performance of the receiver from degrading.It is expressed by the minimum coupling attenuation value from the transmitting terminal to thereceiving terminal of the duplexer in the above frequency band.
19、9.2.2 Method of measurementa) Connect the equipment as illustrated in figure 1.b) Connect point P1 to P2. Adjust the frequency of the generator (1) to any one within thespecified operating frequencies of the receiving branch.Adjust the output of the generator (1) and attenuation of the attenuator (2
20、) to provide asignal level within the linear range of the selective measuring device (4). Record the leveland value of attenuation.c) If required, repeat step b) at another specified operating frequency.Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for
21、 ResaleNo reproduction or networking permitted without license from IHS-,-,-60489-8 Amend. 1 IEC:2000(E) 5 d) Connect point P1 to the transmitting terminal (Tx) of the duplexer, and point P2 to thereceiving terminal (Rx) of the duplexer.While maintaining the output of the generator (1) established i
22、n step b), vary the frequencyover the specified operating range of the receiving branch and adjust the attenuator (2) toprovide a signal level within the linear range of the selective measuring device (4). Recordthe level and the value of the attenuation at each frequency.9.2.3 Presentation of resul
23、tsa) Calculate the ratio, in dB, of the recorded level in step b) of 9.2.2 to recorded level in step d)of 9.2.2 and the difference, in dB, between the recorded attenuation in step b) of 9.2.2 and therecorded attenuation in step d) of 9.2.2. Add the value of both the ratio and the difference.Record t
24、his coupling attenuation value, in dB.b) Plot the coupling attenuation value recorded in step a) on the linear ordinate of a graphversus the corresponding frequency on the linear abscissa.c) The minimum coupling attenuation value in the graph is referred to as transmitter noisesuppression ability of
25、 the duplexer.9.3 Transmitter-to-receiver isolation ability9.3.1 DefinitionThe ability of the duplexer to isolate the transmitter output power level so as to prevent thedesired performance of the receiver from degrading.It is expressed by the minimum coupling attenuation value from the transmitting
26、terminal to thereceiving terminal of the duplexer in the transmitting frequency band.9.3.2 Method of measurementa) Connect the equipment as illustrated in figure 1.b) Connect point P1 to P2. Adjust the frequency of the generator (1) to any one within thespecified operating frequencies of the transmi
27、tting branch.Adjust the output of the generator (1) and attenuation of the attenuator (2) to provide asignal level within the linear range of the selective measuring device (4). Record the leveland value of attenuation.c) If required, repeat step b) at another specified operating frequency.d) Connec
28、t point P1 to the transmitting terminal (Tx) of the duplexer, and point P2 to thereceiving terminal (Rx) of the duplexer.While maintaining the output of generator (1) established in step b), vary the frequencyover the specified operating range of the transmitting branch and adjust the attenuation of
29、attenuator (2) to provide a signal level within the linear range of the selective measuringdevice (4). Record the level and the value of attenuation at each frequency.9.3.3 Presentation of resultsa) Calculate the ratio, in dB, of the recorded level in step b) of 9.3.2 to the recorded level instep d)
30、 of 9.3.2, and the difference, in dB, between the recorded attenuation in step b) of9.3.2 and the recorded attenuation in step d) of 9.3.2. Add the values of both the ratio anddifference. Record this coupling attenuation value, in dB.b) Plot the coupling attenuation value recorded in step a) on the
31、linear ordinate of a graphversus the corresponding frequency on the linear abscissa.c) The minimum coupling attenuation value in the graph is referred to as transmitter-to-receiver isolation ability of the duplexer.Copyright International Electrotechnical Commission Provided by IHS under license wit
32、h IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 6 60489-8 Amend. 1 IEC:2000(E)9.4 Insertion loss9.4.1 DefinitionTransmission loss of the transmitter output power level and the receiver input signal levelthrough the duplexer.9.4.2 Method of measurementa) Conne
33、ct the equipment as shown in figure 2a to the attenuator (4) in the circuit, if the inputSWR of the selective measuring device (5) exceeds 1,2:1.b) Connect point P1 to point P2. Adjust the frequency of the generator (1) to any one withinthe specified operating frequencies of the transmitting branch.
34、 Adjust the output of thegenerator (1) and the attenuation of the attenuator (2) to provide a signal level within thelinear range of the selective measuring device (4). Record the level.c) If required, repeat step b) at another specified operating frequency.d) Connect point P1 to the transmitting te
35、rminal (Tx) and point P2 to the antenna terminal(Ant).While maintaining the output of the generator (1) established in step b), vary the frequencyover the specified operating range of the transmitting branch. Record the level indicated bythe selective measuring device (5) at each frequency.e) Connec
36、t the equipment as illustrated in figure 2b; connect point P1 to point P2. Adjust thefrequency of the generator (1) to any one within the specified operating frequencies of thereceiving branch. Adjust the output of the generator (1) and the attenuation of theattenuator (2) to provide a signal level
37、within the linear range of the selective measuringdevice (4). Record the level.f) If required, repeat step e) at another specified operating frequency.g) Connect point P1 to the antenna terminal (Ant) and point P2 to the receiving terminal (Rx).While maintaining the output of the generator (1) estab
38、lished in step e), vary the frequencyover the specified operating range of the receiving branch. Record the level indicated bythe selective measuring device (5) at each frequency.9.4.3 Presentation of resultsa) Calculate the ratio, in dB, of the recorded level in step b) of 9.4.2 to the recorded lev
39、el instep d) of 9.4.2 and the ratio, in dB, of the recorded level in step e) of 9.4.2 to the recordedlevel in step g) of 9.4.2. Record this value, in dB.b) Plot the ratio recorded in step a) on the linear ordinate of a graph versus the correspondingfrequency on the linear abscissa.c) The maximum rat
40、io in the specified operating frequency range of both branches is referredto respectively as the insertion loss of the transmitting branch and the receiving branch.9.5 Standing-wave ratio (SWR)9.5.1 DefinitionThe ratio of the maximum to the minimum values of the voltage in the standing-wave patterna
41、long a lossless transmission line with the transmitting or antenna terminal as a load, while thereceiving and antenna terminal or the receiving and transmitting terminal are connected to thetest load.Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for Re
42、saleNo reproduction or networking permitted without license from IHS-,-,-60489-8 Amend. 1 IEC:2000(E) 7 9.5.2 Method of measurementa) Connect the equipment as illustrated in figure 3.NOTE The SWR measuring device has a nominal impedance equal to that of the transmitting line and aresidual SWR of not
43、 more than 1,05 below or equal to 500 MHz and not more than 1,10 above 500 MHz. Thisresidual SWR should be measured with all connectors to be used measurement included.b) Connect point P1 to the transmitting terminal (Tx) and point P2 to the antenna terminal(Ant). Vary the frequency of the generator
44、 (1) over the specified operating frequency rangeof the transmitting branch. Record the SWR at each frequency, as read on the SWRmeasuring device (3).c) Connect point P1 to the antenna terminal (Ant) and point P2 to the transmitting terminal(Tx). Vary the frequency of the generator (1) over the spec
45、ified operating frequency rangeof the receiving branch. Record the SWR at each frequency, as read on the SWRmeasuring device (3).9.5.3 Presentation of resultsThe maximum value recorded in step b) and c) of 9.5.2 is respectively referred to as SWR ofthe transmitting branch and the receiving branch.9.
46、6 Rating power9.6.1 DefinitionThe permissible input power at the transmitting terminal of the duplexer under specifiedoperating conditions.9.6.2 Method of measurementa) Connect the equipment as illustrated in figure 4. Connect point P1 to point P2.b) Adjust the output of the generator (1) at the spe
47、cified frequency to achieve the specifiedpower as indicated by the power meter (5). Record the settings of the generator.c) Switch off the output of the generator and connect point P1 to the transmitting terminal (Tx)and point P2 to the antenna terminal (Ant.).d) Switch the generator (1) output on a
48、nd restore the settings recorded in b). Record the SWRmeasuring device (3) reading.e) Apply the power for a period of 4 h under specified temperature and humidity conditions.No damage or deformation shall be observed and the change in SWR from the valuerecorded in d) shall be less than 10 %.9.6.3 Pr
49、esentation of resultsThe result shall state the rating power, the test frequency and the environmental temperatureand humidity.9.7 Duplexer performance under conditions deviating from standard test conditionsIf required, the performance of the duplexer should be evaluated under conditions deviatingfrom standard test conditions.The performance characteristics and the environmental conditions at which the m
