IEC 60151-27-1974 Measurements of the electrical properties of electronic tubes Part 27 Methods of measurement for intermodulation products in transmitting tubes《电子管电性能的测量 第27部分 发射管互调分量的测量方法》.pdf

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1、NORME CE1 INTERNATIONALE INTERNATIONAL STANDARD IEC 601 51 127 Premire dition First edition 1974-01 Mesures des caractristiques lectriques des tubes lectroniques Partie 27: Mthodes de mesure des produits d?intermodulation dans les tubes d?mission Measurements of the electrical properties of electron

2、ic tubes Part 27: Methods of measurement for intermodulation products in transmitting tubes Numro de rfrence Reference number CEIIIEC 60151-27: 1974 Numros des publications Numbering Depuis le ler janvier 1997, les publications de la CE1 sont numrotes partir de 60000. Publications consolides Les ver

3、sions consolides de certaines publications de la CE1 incorporant les amendements sont disponibles. Par exemple, les numros ddition 1.0, 1.1 et 1.2 indiquent respectivement la publication de base, la publication de base incorporant lamendement 1, et la publication de base incorporant les amendements

4、1 et 2. Validit de la presente publication Le contenu technique des publications de la CE1 est constamment revu par la CE1 afin quil reflete ltat actuel de la technique. Des renseignements relatifs la date de reconfir- mation de la publication sont disponibles dans le Catalogue de la CEI. Les rensei

5、gnements relatifs des questions ltude et des travaux en cours entrepris par le comit technique qui a tabli cette publication, ainsi que la liste des publications tablies, se trouvent dans les documents ci- dessous: de la CEI et comme priodique imprim Terminologie, symboles graphiques et littraux En

6、ce qui concerne la terminologie gnrale, le lecteur se reportera la CE1 60050: Vocabulaire Electro- technique International (VEI). Pour les symboles graphiques, les symboles littraux et les signes dusage gnral approuvs par la CEI, le lecteur consultera la CE1 60027: Symboles littraux A utiliser en le

7、ctrotechnique, la CE1 6041 7: Symboles graphiques utilisables sur le matriel. Index, relev et compilation des feuilles individuelles, et la CE1 60617: Symboles graphiques pour schmas. * Voir adresse site web sur la page de titre. As from 1 January 1997 all IEC publications are issued with a designat

8、ion in the 60000 series. Consolidated publications Consolidated versions of some IEC publications including amendments are available. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incor- porating amendment 1 and the base publication

9、incorporating amendments 1 and 2. Validity of this publication The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology. Information relating to the date of the reconfirmation of the publication is available in the

10、 IEC catalogue. Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication, as well as the list of publications issued, is to be found at the following IEC sources: IEC web site Catalogue of IEC publications Publishe

11、d yearly with regular updates (On-line catalogue)* IEC Bulletin Available both at the IEC web site* and as a printed periodical Terminology, graphical and letter symbols For general terminology, readers are referred to I EC 60050: International Electrotechnical Vocabulary (IEV). For graphical symbol

12、s, and letter symbols and signs approved by the IEC for general use, readers are referred to publications IEC 60027: Letter symbols to be used in electrical technology, IEC 60417: Graphical symbols for use on equipment. Index, survey and compilation of the single sheets and IEC 60617: Graphical symb

13、ols for diagrams. * See web site address on title page. NORME CE1 IEC INTERNATIONALE INTERNATIONAL STANDARD 601 51 -27 Pre m re dition First edition 1974-01 Mes u res des caractrist iq ues lect riq ues des tubes lectroniques Partie 27: Mthodes de mesure des produits dintermodulation dans les tubes d

14、mission Measurements of the electrical properties of electronic tubes Part 27: Methods of measurement for intermodulation products in transmitting tubes O IEC 1974 Droits de reproduction rservs -Copyright - all rights reserved Aucune partie de cette publication ne peut tre reproduite ni No part of t

15、his publication may be reproduced or utilized in utilise sous quelque forme que ce soit et par aucun any form or by any means, electronic or mechanical. procd, lectronique ou mcanique, y compris la photo- including photocopying and microfilm. without permission in copie et les microfilms, sans racco

16、rd crit de lditeur. writing from the publisher. International Electrotechnical Commission Telefax: +41 22 919 0300 3, rue de Varemb Geneva, Switzerland IEC web site http: /www.iec.ch e-mail: inmailiec.ch H CODE PRIX PRICE CODE Pour prix, voir catalogue en vigueur For price, see current catalogue Com

17、mission Electrotechnique Internationale International Electrotechnical Commission MemnyHapontiaR 3nenpoiexrecnan HOMHCCHR O -2- COMMISSION LECTROTECHNIQUE INTERNATIONALE MESURES DES CARACTRISTIQUES LECTRIQUES DES TUBES LECTRONIQUES Vingt-septime partie: Mthodes de mesure des produits dintermodulatio

18、n dans les tubes dmission PREAMBULE I) Les dcisions ou accords officiels de la CE1 en ce qui concerne les questions techniques, prpars par des Comits dEtudes O sont reprsents tous les Comits nationaux sintressant ces questions, expriment dans la plus grande mesure possible un accord international su

19、r les sujets examins. 2) Ces dcisions constituent des recommandations internationales et sont agres comme telles par les Comits nationaux. 3) Dans le but dencourager lunification internationale, la CE1 exprime le vu que tous les Comits nationaux adoptent dans leurs rgles nationales le texte de la re

20、commandation de la CEI, dans la mesure o les conditions nationales le permettent. Toute divergence entre la recommandation de la CE1 et la rgle nationale correspondante doit, dans la mesure du possible, tre indique en termes clairs dans cette dernire. PRFACE La prsente recommandation a t tablie par

21、le Comit dEtudes No 39 L; la CE Tubes lectroniques. Elle fait partie dune srie de publications traitant des mesures des caractristiques lectriques des tubes lectroniques. Le catalogue des publications de la CE1 donne tous renseignements sur les autres parties de cette srie. Un premier projet fut dif

22、fus suivant la dcision de la runion tenue New Haven en 1967. Ce projet fut ensuite discut pendant la runion tenue Londres en 1968 et on proposa une rvision. Le projet rvis fut discut et modifi pendant ia runion tenue Washington en 1970. Un projet dfinitif, document 39(Bureau Centra1)243, fut soumis

23、lapprobation des Comits nationaux suivant la Rgle des Six Mois en octobre 1970. Les pays suivants se sont prononcs explicitement en faveur de la publication: Allemagne Japon Australie Pays-Bas Belgique Pologne Canada Royaume-Uni Core (Rpublique de) Sude Etats-Unis dAmrique Suisse Finlande Tchcoslova

24、quie France Turquie Isral Union des Rpubliques Italie Socialistes Sovitiques -3- INTERNATIONAL ELECTROTECHNICAL COMMISSION MEASUREMENTS OF THE ELECTRICAL PROPERTIES OF ELECTRONIC TUBES Part 27: Methods of measurement for intermodulation products in transmitting tubes FOREWORD 1) The formal decisions

25、 or agreements of the IEC on technical matters, prepared by Technical Committees on which all the National Committees having a special interest therein are represented, express, as nearly as possible, an international consensus of opinion on the subjects dealt with. 2) They have the form of recommen

26、dations for international use and they are accepted by the National Committees in that sense. 3) In order to promote international unification, the IEC expresses the wish that all National Committees should adopt the text of the IEC recommendation for their national rules in so far as national condi

27、tions will permit. Any divergence between the IEC recommendations and the corresponding national rules should, as far as possible, be clearly indicated in the latter. PREFACE This recommendatin has been prepared by IEC Technical Committee No. 39, Electronic Tubes. It forms one of a series of publica

28、tions dealing with the measurement of the electrical properties of electronic tubes. Reference should be made to the current catalogue of IEC publications for information on the other parts of the series. A first draft was circulated following a decision of the meeting held in New Haven in 1967. Thi

29、s draft was then discussed during the meeting held in London in 1968 and a revision was proposed. The revised draft was discussed and further amended at the meeting held in Washington in 1970. A final draft, document 39(Central Office)243, was submitted to the National Committees for approval under

30、the Six Months Rule in October 1970. The following countries voted explicitly in favour of publication: Australia Belgium Canada Czechoslovakia Finland France Germany Israel Italy Japan Korea (Republic of) Netherlands Poland Sweden Switzerland Turkey Union of Soviet United Kingdom United States of A

31、merica Socialist Republics -4- MESURES DES CARACTRISTIQUES LECTRIQUES DES TUBES LECTRONIQUES Vingt-septime partie : Mthodes de mesure des produits dintermodulation dans les tubes dmission 1. Domaine dapplication La prsente recommandation concerne les mesures des produits dintermodulation ayant une i

32、mportance dans les applications bande latrale unique, en multiplex, en porteuse indpendante, et les autres applications des tubes amplificateurs linaires de radiofrquences pour le traitement des signaux. On connat plusieurs mthodes de mesure, par exemple: - la mthode deux frquences; - la mthode troi

33、s frquences; - la mthode par bruit Gaussien simul. La prsente recommandation traite de la mthode deux frquences. 2. Terminologie et dfinitions 2.1 Intermodulaton Production non dsire de puissance des frquences nouvelles et non harmoniques, rsultant de lapplication simultane un dispositif lectronique

34、 amplificateur non linaire de puissance deux frquences ou plus. 2.2 Produits dintermodulation Puissance de sortie aux frquences nouvelles produites par intermodulation. Note. - Pour une puissance dentre aux frquences fi, f2, f3, etc., les frquences des produits dintermodulation * pfi f qfi i rf3, .

35、. . sont: OU p, q et r sont des nombres positifs entiers, y compris zro. 2.3 Rapport dintermodulation Rapport dun niveau de puissance de rfrence indiqu (1) au niveau de puissance dun produit dintermodulation donn, (2) gnralement exprim en dcibels. 2.4 Ordre dun produit dintermodulation Somme (n =p +

36、 q) des deux nombres entiers positifs identifiant la frquence dun produit dintermodulation la sortie dun dispositif lectronique amplificateur en fonction des frquences des deux porteuses appliques simultanment lentre. 2.5 Puissance en crte de modulation Niveau de puissance qui concide avec la crte d

37、e lenveloppe de londe. -5- MEASUREMENTS OF THE ELECTRICAL PROPERTIES OF ELECTRONIC TUBES Part 27: Methods of measurement for intermodulation products in transmitting tubes 1. Scope This recommendation deals with measurements of intermodulation products of importance in single side-band, multiplex, i

38、ndependent carrier and other signal processing applications of radio- frequency linear amplifier tubes. Several methods of measurement are known, e.g. : - the two-frequency method; - the three-frequency method; - the simulated Gaussian noise method. This recommendation is concerned with the two-freq

39、uency method. 2. Terms and definitions 2.1 Intermodulation The unwanted generation of power at new, non-harmonic radio frequencies as the result of simultaneous application of power at two or more frequencies to a non-linear amplifying electronic device. 2.2 Intermodulation products Output power at

40、new frequencies, generated by intermodulation. Note. - For input power at frequencies fi, fi, f3, etc., the frequencies of the intermodulation products are: * Pfl Zt 9f2 - rf3, . in which p, q and r are positive integers, zero included. 2.3 Intermodulation ratio The ratio of (1) a stated reference p

41、ower level to (2) the power level of a stated intermodulation product, usually expressed in decibels. 2.4 Order of an intermodulation product The sum (n = p + q) of the two positive integers identifying the frequency of an intermodulation product at the output of an amplifying electronic device as a

42、 function of the frequencies of the two carriers applied simultaneously at the input. 2.5 Peak envelope power The magnitude of the power coincident with the crest of the wave envelope. -6- 3. Thorie La mesure du niveau des produits dintermodulation donne une indication de la distorsion cause un sign

43、al dentre par un tube par suite de la non-linarit de sa caractristique de transfert. Un avantage important des techniques de traitement de signal mentionnes plus haut (par exemple bande latrale unique, multiplex, etc.) est la conservation du spectre au cours de la transmission. Ces techniques peuven

44、t produire deux ou plusieurs composantes coexistant dans le signal qui, cause de la non-linarit de lamplificateur, peuvent produire des signaux additionnels provoqus par les effets dun signal sur lautre. La caractristique de transfert dun tube dmission peut tre crite sous la forme: i, la(0) + klvg +

45、 kz; + k3vg3 + k4v; + k5V: + . . . Ia = courant anodique instantan la(o) vg kl, kz, k3, k4, k, = coefficients = courant sans signal, composante continue = tension instantane de signal lentre Note. - Les puissances paires peuvent tre omises parce quen pratique ces composantes nont pas dimportance dan

46、s le canal de fonctionnement, bien quelles puissent perturber dautres canaux. Si 1011 considre que lentre comporte deux ondes sinusodales de mme niveau, de frquencesfi etfi, la sortie contiendra des termes de la forme: k,vgn (sin alt + sin uzt)” o vg est le niveau de lune ou lautre des ondes sinusod

47、ales. Cela donne des produits dordre impair qui tombent dans la bande de fonctionnement dsire. Ces termes donnent des frquences de la forme de: 2fi -5, 2fz -.fi, 3f1 - 25, 3f2 - 2f1, etc. Les deux premiers termes reprsentent les produits dintermodulation du troisime ordre (voir la dfinition du parag

48、raphe 2.4 et ia figure 1, page 14, pour la reprsentation du spectre). 4. Mthodes de mesure 4.1 La mthode deux frquences ou a deux signaux est la mthode recommande pour mesurer les produits dintermodulation des tubes dmission. Deux signaux en radiofrquence, de mme amplitude, appliqus simultanment lentre du tube amplificateur, produisent, la sortie, des composantes fondamentales ayant sensiblement la mme amplitude, aux radiofrquences fi et fz, et, de plus, des produits dintermodulation. Les frquences des produits dintermodulation sont quivalente

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