1、BRITISH STANDARD Receiving antennas for satellite broadcast transmissions in the 11/12 GHz band - Part 1: Electrical measurements The European Standard EN 61 1141:1999 has the status of a British Standard ICs 33.120.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 61 1
2、 14-1: 1999 IEC 611 141:1999 BS EN 61114-1:199!3 direction of the Electrotechnical Amd. No. D - present to the responsible intemaionai/Eumpean committee any enquiries on the interpretation, or proposals for change, and keep the UK inkrests infOZllled; them in the UK - monitor related intemational an
3、d European developments and promulgate A list of organizations represented on this subcommittee can be obtained on request to its secreay. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For insance, IEC 27-1 has been renumbered as IEC 60027-1. For a period o
4、f time during the change over from one numbering system to the other, pubiications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to intemationai publications with th
5、eir corresponding European publications. The British standards which implement intemationai or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “intemationai Standards Correspondence index“, or by using the “Find“ facility of t
6、he BSI Standards Electronic catalogue. A British Standard does not purport to include ali the necessary provisions of a contract. Users of British Stan- are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from iegai obligations. Summar
7、y of pages This document comprises a front cover, an inside front cover, the EN We page, pages 2 to 48, an inside back cover and a back cover. ISBN O 580 32523 7 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 611 14-1 April 1999 ICs 33.060.20 Supersedes EN 61 114-1:1993 English version Receivi
8、ng antennas for satellite broadcast transmissions in the 1 1 /I 2 GHz band Part 1 : Electrical measurements (IEC 61 1 14-1 : 1999) Antennes de rception des missions de radiodiffusion par satellite dans la bande de 11/12 GHz Partie 1 : Mesures lectriques Empfangsantennen fr Satelliten-Rundfunkbertrag
9、ung im 1 1 Il 2-GHz-Bereich Teil 1 : Elektrische Messungen (CE1 61 1 14-1 :1999) (IEC 61 11 4-1 1999) This European Standard was approved by CENELEC on 1999-04-01. CENELEC members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this European St
10、andard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, F
11、rench, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgiu
12、m, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches
13、 Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 1999 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61 114-1:1999 E Page 2 EN 61114-1:1999 Foreword The text of document 100A/1 O9/F
14、DIS, future edition 2 of IEC 61 1 14-1, prepared by SC 100A, Multimedia end-user equipment, of IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61 1 14-1 on 1999-04-01. This European Standard supersedes EN
15、 61 1 14-1 :1993. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2000-0 1 -0 1 - latest date by which the national standards conflicting with the EN have Po be withdrawn (d
16、ow) 2002-04-01 Annexes designated “normative“ are part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annexes C and ZA are normative and annexes A, 6, D and E are informative. Annex ZA has been added by CENELEC. Endorsement notice The
17、text of the International Standard IEC 61 114-1 :1999 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60153 IEC 601 54 NOTE: Harmonized as HD 123 (not modified).
18、NOTE: Harmonized as HD 129 or EN 601 54 hot modified). IEC 61319-1 NOTE: Harmonized as EN 61319-1:1996 (not modified). Page 3 EN 61114-1:1999 CONTENTS Clause Page Scope . Normative references Terms and definitions . General notes on measurements 4.1 General conditions . 4.2 Test signai and test freq
19、uencies . 4.3 Arrangement of source and receiving antennas 4.4 Other conditions . 4.5 Measuring instruments . Methods of measurement 5.1 Calibration of field intensity 5.2 Antenna gain . 5.4 Radiation pattern . 5.3 Impedance matching 5.5 Cross-polar radiation pattern 5.6 Beam separation angle 5.7 Ou
20、tput terminal isolation 5.8 Figure of merit (GTT) Annex A (informative) Circularly polarized standard antenna Annex B (informative) Linearly polarized standard antenna Annex C (normative) Method for confirmation of the cross-polarization discrimination of a source antenna Annex D (informative) Metho
21、d of measurement of antenna gain utilizing DBS/FSS signals Annex E (informative) Method of measurement of an antenna utilizing a network analyzer Annex ZA (normative) Normative references to international publications with their corresponding European publications . Bibliography 5 5 6 6 6 7 7 8 8 9
22、9 10 11 12 14 15 15 18 31 37 38 41 44 48 47 O BSI 06-1999 STD=BSI BS EN bLLLq-1-ENGL 1477 lib2qbb9 0765Li99 199 m Page 4 EN 61114-1:1999 . I- -* Figures 1 2 3 4 5 6 7 0 9 10 11 12 13 A . 1 A.2 A.3 A.4 AS A.6 B . 1 c.1 D.l E.l E.2 E.3 E.4 Typical configurations of six antenna types . Field intensity
23、calibration Antenna gain measurement Spherical coo rd i nates . Impedance matching measurement Antenna gain graphical presentation . Impedance matching graphical presentation . Radiation pattern measurement Radiation pattern graphical presentation . : . Cross-polar radiation pattern measurement Cros
24、s-polar radiation pattern graphical presentation Output terminal isolation measurement . G/T graphical presentation . Circularly polarized standard antenna . Dimensions of a conical horn Circular polarizer Measurement method for axial ratio Example of measured axial ratio of a polarizer Example of m
25、easured SWR of a polarizer . Linearly polarized standard antenna Cross-polarization discrimination confirmation . Measurement system block diagram . Elimination of reflective waves Height pattern measurement apparatus Time gate window . Antenna gain measurement utilizing DBS/FFS signals . 20 21 21 2
26、2 23 24 25 25 26 27 28 29 30 33 33 34 35 35 36 38 40 43 45 46 47 47 :- CY Page 5 EN 61114-1:1999 RECEIVING ANTENNAS FOR SATELLITE BROADCAST TRANSMISSIONS IN THE 1111 2 GHz BAND - Part 1 : Electrical measurements 1 Scope This part of IEC 61114 applies to individual and collective receiving antennas f
27、or satellite broadcast transmissions in the 11/12 GHz band. This standard mainly applies to paraboloidal reflector antennas, which include offset paraboloidal reflector antennas, Cassegrain reflector antennas and other equivalent types. It also applies to planar array antennas. However, the supporti
28、ng mast and the radome are not included in this standard. This standard applies to the following six types of antennas. a) Antenna of a single antenna system to receive signals from a single satellite 1) linearly polarized single-beam antenna; 2) circularly polarized single-beam antenna. b) Antenna
29、of a single antenna system to receive signals from two or more than two satellites 1) linearly polarized multiple beam antenna; 2) circularly polarized multiple beam antenna. c) Antenna of a multiple antenna system to receive signals from two or more than two satellites 1) linearly polarized system
30、of single-beam antenna; 2) circularly polarized system of single-beam antenna. Typical configurations of these six types are illustrated in figure 1. The object of this part of IEC 61 114 is to define the conditions and methods of measurement to be applied. This standard does not specify performance
31、 requirements. It is assumed that for some measurements the SHF converter will be removed from the antenna, leaving access to an r.f. port. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 61
32、114. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and the parties to agreement based on this part of IEC 61114 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated be
33、low. Members of IS0 and IEC maintain registers of currently valid International Standards. STD-BSI BS EN bLLL4-L-ENGL 1997 m Lb24bb9 0785501 b77 Page 6 EN 61114-1:1999 IEC 60050(712):1992, International Electrotechnical Vocabulary (IEV) - Chapter 712: Antennas IEC 61 079-1 :1992, Methods of measurem
34、ent on receivers for satellite broadcast transmissions in the 12 GHz band - Part I: Radio-frequency measurements on outdoor units 3 Terms and definitions For the purpose of this part of IEC 61 11 4, the following general definitions apply. 3.1 receiving antenna SHF antenna intended for use in indivi
35、dual and collective reception of satellite broadcast signals A polarization switching device is included in an antenna, if the antenna is able to receive two orthogonal polarized waves. 3.2 paraboloidal reflector antenna antenna usually comprising main reflector, a primary (and sometimes a secondary
36、) radiator with or without a feedome, an SHF converter, supporting structures for a primary radiator or subreflector and pointing structures 3.3 planar array antenna antenna usually comprising radiating elements, a feed network, an SHF converter, supporting structures, pointing structures and a rado
37、me 3.4 standard antenna antenna which is used as a gain reference for receiving antennas under test 3.5 source antenna antenna which is used as a transmitting antenna for measurements 3.6 polarization switcher device which can select one type of polarization 4 General notes on measurements 4.1 Gener
38、al conditions 4.1.1 Introduction Measurements should be carried out in accordance with the following conditions to ensure repeatable results. STD-BSI BS EN bLLL9-1-ENGL 1777 Lb29bb7 0785502 503 m Page 7 EN 61114-11999 4.1.2 Testing site Measurements shall be carried out at a facility where external
39、radio intererence and reflections from the ground and from surrounding structures have been minimized and their residual effects have been measured. The testing site for G/T measurement is provided in 4.3.3. 4.1.3 Power supply If an SHF converter is used as an integral part of the antenna, a power s
40、upply equivalent to the rated voltage of the converter shall be used. The fluctuation of the power supply voltage during tests shall not exceed 12 %. 4.1.4 Accuracy of measuring instruments Requirements for the accuracy of measurements are not included in this part of IEC 61114, because they depend
41、only on the purpose for which the measurements are required. The accuracy of the measuring instruments used, if known, shall either be stated as a percentage or in decibels, as appropriate. Alternatively, the precision class may be quoted as stated in relevant publications (under consideration). 4.1
42、.5 Residual standing wave ratio (SWR) of test instruments The residual SWR of the test instruments shall be less than 1,l for measuring the antenna gain and the impedance matching, and less than 1,5 for measuring the radiation pattern, the cross- polar pattern and the cross-polarization discriminati
43、on. 4.1.6 Stabilization period Unless otherwise specified, measurements should be started once stabilization of the characteristics is obtained. 4.2 Test signal and test frequencies Unless otherwise specified, the test signal shall be a C.W. signal and its frequency shall be the lowest, middle and h
44、ighest frequencies in the 11/12 GHz band as specified by the standard of the country or countries for which the antenna under test was designed. If there is interference at these frequencies, the test frequency can be shifted slightly to avoid the disturbance. If the Characteristics of the antenna a
45、re strongly frequency-dependent, the measurements shall also be carried out at those frequencies where significant changes occur. 4.3 Arrangement of source and receiving antennas 4.3.1 Antenne distance The distance R between the aperture planes of the source antenna and the antenna under test shall
46、satisfy the following equations: STDOBSI BS EN bLLLq-L-ENGL 1399 LbZqbb9 0785503 i.14“ m Page 8 EN 61114-1:1999 where D, is the largest aperture diameter of the antenna under test, in metres (m); D2 is the largest aperture diameter of the source antenna, in metres (m); A is the free-space wavelength
47、 at the test frequency, in metres (m). 4.3.2 The spatial variation of the field at the aperture plane of the antenna under test shall be minimized. The variation in the power received from a standard antenna shall be within f0,5 dB on the aperture plane of the antenna. If the antenna under test is d
48、esigned to receive two orthogonal circularly polarized waves, the variation shall satisfy the above value for both right- and left-hand circularly polarized waves. If the antenna under test is designed to receive two orthogonal linearly polarized waves, the variation shall satisfy the above value fo
49、r both horizontal and vertical linearly polarized waves. The method of measurement of the variation is described in 5.1. Spatial variation of the field If a larger variation is observed, the position and height of the antenna should be changed to obtain the value specified above. 4.3.3 Environmental conditions for G/T measurements When the measurements of G/T are made (see 5.8), the following conditions shall be main ta ned: - the sky shall be clear; - there shall be no noise sources such as the sun, a satellite, buildings and trees within 10“ around the beam axis of the an
