1、BRITISH STANDARD BS EN 61114-1:1999 IEC 61114-1:1999 Receiving antennas for satellite broadcast transmissions in the 11/12 GHz band Part 1: Electrical measurements The European Standard EN 61114-1:1999 has the status of a British Standard ICS 33.120.40BSEN61114-1:1999 This British Standard, having b
2、een prepared under thedirectionof the Electrotechnical Sector Committee, was published underthe authority of the Standards Committee and comesinto effect on 15June1999 BSI 04-2000 ISBN 0 580 32523 7 National foreword This British Standard is the English language version of EN61114-1:1999. It is iden
3、tical with IEC61114-1:1999. It supersedes BSEN61114-1:1995 which will be withdrawn on 2002-04-01. The UK participation in its preparation was entrusted by Technical Committee EPL/100, Audio, Video and Multimedia Systems and Equipment, to Subcommittee EPL/100/1, Receiving equipment, which has the res
4、ponsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A
5、 list of organizations represented on this subcommittee can be obtained on request to its secretary. From1 January1997, all IEC publications have the number60000 added to the old number. For instance, IEC27-1 has been renumbered as IEC60027-1. For a period of time during the change over from one num
6、bering system to the other, publications 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 international publications with their corresponding European publications.
7、The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue.
8、A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises
9、a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to34, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments
10、issued since publication Amd. No. Date CommentsBSEN61114-1:1999 BSI 04-2000 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 61114-1 5ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61114-1 April 1999 ICS 33.060.20 Supersedes EN 61114-1:1993 English version Rec
11、eiving antennas for satellite broadcast transmissions in the 11/12 GHz band Part 1: Electrical measurements (IEC 61114-1:1999) Antennes de rception des missions de radiodiffusion par satellite dans la bande de 11/12 GHz Partie 1: Mesures lectriques (CEI 61114-1:1999) Empfangsantennen fr Satelliten-R
12、undfunkbertragung im 11/12-GHz-Bereich Teil 1: Elektrische Messungen (IEC 61114-1:1999) This European Standard was approved by CENELEC on 1999-04-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the sta
13、tus 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, French, German)
14、. 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, Belgium, Czech Repub
15、lic, 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 Komitee fr El
16、ektrotechnische 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 61114-1:1999 EEN61114-1:1999 BSI 04-2000 2 Foreword The text of document 100A/109/FDIS, future edi
17、tion2 of IEC61114-1, prepared by SC100A, Multimedia end-user equipment, of IEC TC100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN61114-1 on 1999-04-01. This European Standard supersedes EN61114-1:1993. The follow
18、ing dates were fixed: Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for information only. In this standard, Annex C and Annex ZA are normative and Annex A, Annex B, Annex D and Annex E are informative. Annex ZA has been added by CENEL
19、EC. Endorsement notice The text of the International Standard IEC 61114-1:1999 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: latest date by which the ENhas to be im
20、plemented at national level by publication of an identical national standard or by endorsement (dop) 2000-01-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2002-04-01 IEC 60153 NOTEHarmonized as HD 123 (not modified). IEC 60154 NOTEHarmonized as HD
21、129 or EN 60154 (not modified). IEC 61319-1 NOTEHarmonized as EN 61319-1:1996 (notmodified).EN61114-1:1999 BSI 04-2000 3 Contents Page Foreword 2 1 Scope 5 2 Normative references 5 3 Terms and definitions 5 4 General notes on measurements 5 4.1 General conditions 5 4.2 Test signal and test frequenci
22、es 6 4.3 Arrangement of source and receiving antennas 6 4.4 Other conditions 6 4.5 Measuring instruments 7 5 Methods of measurement 7 5.1 Calibration of field intensity 7 5.2 Antenna gain 7 5.3 Impedance matching 8 5.4 Radiation pattern 9 5.5 Cross-polar radiation pattern 10 5.6 Beam separation angl
23、e 10 5.7 Output terminal isolation 11 5.8 Figure of merit (G/T) 12 Annex A (informative) Circularly polarized standard antenna 21 Annex B (informative) Linearly polarized standard antenna 25 Annex C (normative) Method for confirmation of the cross-polarization discrimination of a source antenna 26 A
24、nnex D (informative) Method of measurement of antenna gain utilizing DBS/FSS signals 27 Annex E (informative) Method of measurement of an antenna utilizing a network analyzer 29 Bibliography 34 Annex ZA (normative) Normative references to international publications with their corresponding European
25、publications Inside back cover Figure 1 Typical configurations of six antenna types 13 Figure 2 Field intensity calibration 14 Figure 3 Antenna gain measurement 14 Figure 4 Spherical coordinates 15 Figure 5 Antenna gain graphical presentation 16 Page Figure 6 Impedance matching measurement 16 Figure
26、 7 Impedance matching graphical presentation 17 Figure 8 Radiation pattern measurement 17 Figure 9 Radiation pattern graphical presentation 18 Figure 10 Cross-polar radiation pattern measurement 19 Figure 11 Cross-polar radiation pattern graphical presentation 19 Figure 12 Output terminal isolation
27、measurement 20 Figure 13 G/T graphical presentation 20 Figure A.1 Circularly polarized standard antenna 22 Figure A.2 Dimensions of a conical horn 22 Figure A.3 Circular polarizer 23 Figure A.4 Measurement method for axial ratio 24 Figure A.5 Example of measured axial ratio of a polarizer 24 Figure
28、A.6 Example of measured SWR of a polarizer 25 Figure B.1 Linearly polarized standard antenna 25 Figure C.1 Cross-polarization discrimination confirmation 26 Figure D.1 Antenna gain measurement utilizing DBS/FFS signals 28 Figure E.1 Measurement system block diagram 30 Figure E.2 Elimination of refle
29、ctive waves 31 Figure E.3 Height pattern measurement apparatus 32 Figure E.4 Time gate window 33 Table 1 Example of the list of beam axis directions 11 Table 2 Example of the list of beam separation angles 11 Table 3 Example of the list of output terminal isolations for a single-beam antenna 12 Tabl
30、e 4 Example of the list of output terminal isolations for a linearly polarized multiple beam antenna (number of beams: 2) 12 Table 5 Example of the list of output terminal isolations for a circularly polarized multiple beam antenna (number of beams: 2) 124 blankEN61114-1:1999 BSI 04-2000 5 1 Scope T
31、his part of IEC61114 applies to individual and collective receiving antennas for satellite broadcast transmissions in the 11/12GHz band. This standard mainly applies to paraboloidal reflector antennas, which include offset paraboloidal reflector antennas, Cassegrain reflector antennas and other equi
32、valent types. It also applies to planar array antennas. However, the supporting 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
33、single-beam antenna; 2) circularly polarized single-beam antenna. b) Antenna 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 recei
34、ve signals from two or more than two satellites 1) linearly polarized system of single-beam antenna; 2) circularly polarized system of single-beam antenna. Typical configurations of these six types are illustrated inFigure 1. The object of this part of IEC61114 is to define the conditions and method
35、s of measurement to be applied. This standard does not specify performance 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, thr
36、ough reference in this text, constitute provisions of this part of IEC61114. 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 IEC61114 are encouraged to investigate the possibility of ap
37、plying the most recent editions of the normative documents indicated below. Members of ISOandIEC maintain registers of currently valid International Standards. IEC 60050(712):1992, International Electrotechnical Vocabulary (IEV) Chapter 712: Antennas. IEC 61079-1:1992, Methods of measurement on rece
38、ivers for satellite broadcast transmissions in the12 GHz band Part 1: Radio-frequency measurements on outdoor units. 3 Terms and definitions For the purpose of this part of IEC 61114, the following general definitions apply. 3.1 receiving antenna SHF antenna intended for use in individual and collec
39、tive 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) radiator with
40、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 radome 3.4 standard
41、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 General conditions 4.
42、1.1 Introduction Measurements should be carried out in accordance with the following conditions to ensure repeatable results. 4.1.2 Testing site Measurements shall be carried out at a facility where external radio interference and reflections from the ground and from surrounding structures have been
43、 minimized and their residual effects have been measured.EN61114-1:1999 6 BSI 04-2000 The testing site for G/T measurement is provided in4.3.3. 4.1.3 Power supply If an SHF converter is used as an integral part of the antenna, a power supply equivalent to the rated voltage of the converter shall be
44、used. The fluctuation of the power supply voltage during tests shall not exceed2%. 4.1.4 Accuracy of measuring instruments Requirements for the accuracy of measurements are not included in this part of IEC61114, because they depend only on the purpose for which the measurements are required. The acc
45、uracy 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). 4.1.5 Residual standing wave ratio (SWR) of test instruments The residu
46、al SWR of the test instruments shall be less than1,1 for measuring the antenna gain and the impedance matching, and less than1,5 for measuring the radiation pattern, the cross-polar pattern and the cross-polarization discrimination. 4.1.6 Stabilization period Unless otherwise specified, measurements
47、 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 highest frequencies in the 11/12GHz band as specified by the standard of
48、 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 are strongly frequency-dependent, the measurements shall also be carried
49、out at those frequencies where significant changes occur. 4.3 Arrangement of source and receiving antennas 4.3.1 Antenna distance The distance R between the aperture planes of the source antenna and the antenna under test shall satisfy the following equations: R 2D 1 2 / R D 1D 2 /0,32 4.3.2 Spatial variation of the field 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 shal
