Flanges for waveguides - Part 2: Relevant specifications for flanges for ordinary rectangular waveguides (IEC 60154-2:2016)

This part of IEC 60154 specifies the dimensions of flanges for ordinary rectangular waveguide
for use in electronic equipment.
It covers requirements for flanges drilled before or after mounting on waveguides. It should be
noted that for optimum electrical performance, post-drilling of the alignment holes after
mounting is recommended.
The aim of this standard is to specify for waveguide flanges the mechanical requirements
necessary to ensure compatibility and, as far as practicable, interchangeability as well as to
ensure adequate electrical performance.

Flansche für Hohlleiter - Teil 2: Allgemeine Anforderungen für Flansche für Rechteck-Hohlleiter (IEC 60154-2:2016)

Brides pour guides d'ondes - Partie 2: Spécifications particulières de brides pour guides d'ondes rectangulaires normaux (IEC 60154-2:2016)

L'IEC 60154-2:2016 spécifie les dimensions des brides pour guides d'ondes rectangulaires normaux utilisées dans les équipements électroniques. Elle couvre les exigences applicables aux brides percées avant ou après montage sur les guides d'ondes. Il convient de noter que pour garantir des performances électriques optimales, il est recommandé de percer les trous d'alignement après le montage.
La présente norme a pour but de spécifier les exigences mécaniques applicables aux brides de guides d'ondes qui sont nécessaires pour assurer la compatibilité et, autant que possible, l'interchangeabilité, mais aussi pour assurer des performances électriques suffisantes. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) révision de l'estimation de l'affaiblissement de réflexion au niveau de l'interface de connexion des guides d'ondes;
b) ajout de deux types de brides de guide d'ondes pour les applications à haute fréquence, c'est-à-dire au-delà de 50 GHz;
c) extension de la plage de fréquences de fonctionnement jusqu'à 3,3 THz;
d) attribution d'un nouveau nom à la plage de fréquences R 1200, à savoir R 1,2K.

Prirobnice za valovode - 2. del: Ustrezne specifikacije za prirobnice za navadne pravokotne valovode (IEC 60154-2:2016)

Ta del standarda IEC 60154 določa mere prirobnic za navadne pravokotne valovode, ki se uporabljajo v elektronski opremi.
Zajema zahteve za prirobnice, izvrtane pred ali po namestitvi na valovode. Opozoriti je treba, da je za optimalno električno zmogljivost priporočljivo vrtanje poravnalnih odprtin po namestitvi.
Cilj tega standarda je določiti mehanske zahteve, potrebne za zagotovitev združljivosti in, v največji možni meri, medsebojne zamenljivosti ter ustrezne električne zmogljivosti za prirobnice valovodov.

General Information

Status
Published
Publication Date
04-Dec-2016
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
30-Nov-2016
Due Date
04-Feb-2017
Completion Date
05-Dec-2016

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60154-2:2017
01-januar-2017
Nadomešča:
SIST EN 60154-2:1999
SIST EN 60154-2:1999/A1:1998
Prirobnice za valovode - 2. del: Ustrezne specifikacije za prirobnice za navadne
pravokotne valovode (IEC 60154-2:2016)
Flanges for waveguides - Part 2: Relevant specifications for flanges for ordinary
rectangular waveguides (IEC 60154-2:2016)
Flansche für Hohlleiter - Teil 2: Allgemeine Anforderungen für Flansche für Rechteck-
Hohlleiter (IEC 60154-2:2016)
Brides pour guides d'ondes - Partie 2: Spécifications particulières de brides pour guides
d'ondes rectangulaires normaux (IEC 60154-2:2016)
Ta slovenski standard je istoveten z: EN 60154-2:2016
ICS:
33.120.10 Koaksialni kabli. Valovodi Coaxial cables. Waveguides
SIST EN 60154-2:2017 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60154-2:2017

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SIST EN 60154-2:2017


EUROPEAN STANDARD EN 60154-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
November 2016
ICS 33.100.10 Supersedes EN 60154-2:1997
English Version
Flanges for waveguides - Part 2: Relevant specifications for
flanges for ordinary rectangular waveguides
(IEC 60154-2:2016)
Brides pour guides d'ondes - Partie 2: Spécifications Flansche für Hohlleiter - Teil 2: Allgemeine Anforderungen
applicables relatives aux brides pour guides d'ondes an Flansche für Rechteck-Hohlleiter
rectangulaires normaux (IEC 60154-2:2016)
(IEC 60154-2:2016)
This European Standard was approved by CENELEC on 2016-08-09. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard 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 CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 60154-2:2016 E

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SIST EN 60154-2:2017
EN 60154-2:2016
European foreword
The text of document 46F/305/CDV, future edition 3 of IEC 60154-2, prepared by SC 46F "RF and
microwave passive components", of IEC/TC 46 "Cables, wires, waveguides, RF connectors, RF and
microwave passive components and accessories" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN 60154-2:2016.
The following dates are fixed:
(dop) 2017-05-25
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2019-11-25
• latest date by which the national standards conflicting with
the document have to be withdrawn

This document supersedes EN 60154-2:1997.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60154-2:2016 was approved by CENELEC as a European
Standard without any modification.
2

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SIST EN 60154-2:2017
EN 60154-2:2016

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60050 series International Electrotechnical Vocabulary_- - series
Part_102: Mathematics_- General
concepts and linear algebra
IEC 60153-2 2016 Hollow metallic waveguides - Part 2: EN 60153-2 2016
Relevant specifications for ordinary
rectangular waveguides
ISO/IEC Guide 98-3 2008 Uncertainty of measurement -- Part 3: - -
Guide to the expression of uncertainty in
measurement (GUM:1995)

3

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SIST EN 60154-2:2017

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SIST EN 60154-2:2017




IEC 60154-2

®


Edition 3.0 2016-07




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside










Flanges for waveguides –

Part 2: Relevant specifications for flanges for ordinary rectangular waveguides




Brides pour guides d'ondes –

Partie 2: Spécifications applicables relatives aux brides pour guides d'ondes

rectangulaires normaux















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 33.120.10 ISBN 978-2-8322-3496-9



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 60154-2:2017
– 2 – IEC 60154-2:2016 © IEC 2016
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references. 7
3 Terms and definitions . 7
4 General . 7
4.1 Standardized types . 7
4.2 Flange designation . 7
5 Mechanical requirements . 8
5.1 Dimensions . 8
5.1.1 Alignment holes . 8
5.1.2 Shank diameter of fixing bolts used for alignment . 8
5.1.3 Relation between shank and alignment hole diameters . 8
5.1.4 Overall dimensions and thickness of flanges . 9
5.1.5 Surface roughness of contact area of flanges . 9
5.1.6 Flatness of contact area . 9
5.1.7 Perpendicularity of the axis of the holes . 9
5.1.8 General requirements for assemblies . 9
5.1.9 Perpendicularity of the contact area. 9
5.2 Additional requirements for unmounted flanges . 10
5.2.1 General . 10
5.2.2 Shape of aperture . 10
5.2.3 Ordering information . 10
5.3 Information on reflection . 10

Figure 1 – Flange type A: 60154 IEC-AR 32 . 16
Figure 2 – Flange type A: 60154 IEC-AR 32 gasket . 16
Figure 3 – Flange type A: 60154 IEC-AR 48 . 17
Figure 4 – Flange type A: 60154 IEC-AR 48 gasket . 17
Figure 5 – Flange type A: 60154 IEC-AR 58-70 . 18
Figure 6 – Flange type A: 60154 IEC-AR 58-70 gasket . 18
Figure 7 – Flange type B: 60154 IEC-BR 84-320 . 21
Figure 8 – Flange type B: 60154 IEC-BR 84-320 gasket . 21
Figure 9 – Flange type C: 60154 IEC-PCR 220-500 . 24
Figure 10 – Flange type C: 60154 IEC-PCR 220-500 gasket . 24
Figure 11 – Flange type C: 60154 IEC-PCR 220-500 . 27
Figure 12 – Flange type C: 60154 IEC-PCR 220-500 gasket . 27
Figure 13 – Recommended gaskets for flanges without gasket groves . 28
Figure 14 – Recommended gaskets for type PDR 3 to 12 flanges . 29
Figure 15 – Flange type D: 60154 IEC-PDR 3 AND UDR 3 . 30
Figure 16 – Flange type D: 60154 IEC-PDR 4 AND UDR 4 . 31
Figure 17 – Flange type D: 60154 IEC-PDR 5 AND UDR 5 . 32
Figure 18 – Flange type D: 60154 IEC-PDR 6 AND UDR 6 . 33

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SIST EN 60154-2:2017
IEC 60154-2:2016 © IEC 2016 – 3 –
Figure 19 – Flange type D: 60154 IEC-PDR 8 AND UDR 8 . 34
Figure 20 – Flange type D: 60154 IEC-PDR 9 AND UDR 9 . 35
Figure 21 – Flange type D: 60154 IEC-PDR 12 AND UDR 12 . 36
Figure 22 – Flange type D: 60154 IEC-PDR 14 – 40 . 37
Figure 23 – Flange type D: 60154 IEC-PDR 48 – 100 . 38
Figure 24 – Flange type D: 60154 IEC-UDR 120 – 180 . 39
Figure 25 – Flange type D: 60154 IEC-PDR 120 – 180 . 40
Figure 26 – Flange type E: 60154 IEC-UER 32 . 43
Figure 27 – Flange type E: 60154 IEC-UER 40-100 . 44
Figure 28 – Flange type F: 60154 IEC-UFC without choke or gasket groove . 47
Figure 29 – Flange type G: 60154 IEC-UGC without choke or gasket groove . 49

Table 1 – ISO specifications . 9
Table 2 – Requirements of root mean square of roughness on the contact area . 9
Table 3 – The worst "return loss" in (positive) decibels for waveguides . 12
Table 4 – Flange types . 14
Table 5 – Dimensions of type A flange for ordinary rectangular waveguides . 19
Table 6 – Dimensions of type B flange for ordinary rectangular waveguides . 22
Table 7 – Dimensions of type C flange for ordinary rectangular waveguides . 25
Table 8 – Dimensions of type D flange for ordinary rectangular waveguides . 41
Table 9 – Dimensions of type E flange for ordinary rectangular waveguides . 45

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SIST EN 60154-2:2017
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

FLANGES FOR WAVEGUIDES –

Part 2: Relevant specifications for flanges
for ordinary rectangular waveguides

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60154-2 has been prepared by subcommittee 46F: RF and
microwave passive components, of IEC technical committee 46: Cables, wires, waveguides,
RF connectors, RF and microwave passive components and accessories
This third edition cancels and replaces the second edition published in 1980. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revise the estimation for return loss at connection interface of waveguides;
b) add two type of waveguide flange for high frequency application, i.e. over 50 GHz;
c) expand the operation frequency range up to 3,3 THz;
d) rename the frequency band over R 1200, i.e. R1,2k.

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SIST EN 60154-2:2017
IEC 60154-2:2016 © IEC 2016 – 5 –
The text of this standard is based on the following documents:
CDV Report on voting
46F/305/CDV 46F/319/RVC

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60154 series, published under the general title Flanges for
waveguides, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.

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SIST EN 60154-2:2017
– 6 – IEC 60154-2:2016 © IEC 2016
INTRODUCTION
This International Standard relates to straight hollow metallic tubing for use as waveguides in
electronic equipment. In recent years, the operation frequency of waveguide components and
systems has been extended to 1 THz and above. However, the IEC 60154 series, series of
standards for flanges for waveguides, currently specifies the interface designs up to 40 GHz
for rectangular waveguide. In addition to this, the current issues of the IEC 60154 series of
standards were issued in the 1970’s and do not meet the needs of current applications. This
new edition of IEC 60154-2 addresses these two issues by extending the frequency coverage
to 3 300 GHz and by addressing current applications for this type of waveguide.

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SIST EN 60154-2:2017
IEC 60154-2:2016 © IEC 2016 – 7 –
FLANGES FOR WAVEGUIDES –

Part 2: Relevant specifications for flanges
for ordinary rectangular waveguides



1 Scope
This part of IEC 60154 specifies the dimensions of flanges for ordinary rectangular waveguide
for use in electronic equipment.
It covers requirements for flanges drilled before or after mounting on waveguides. It should be
noted that for optimum electrical performance, post-drilling of the alignment holes after
mounting is recommended.
The aim of this standard is to specify for waveguide flanges the mechanical requirements
necessary to ensure compatibility and, as far as practicable, interchangeability as well as to
ensure adequate electrical performance.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60050 (all parts), International Electrotechnical Vocabulary (available at
IEC 60153-2:2016, Hollow metallic waveguides – Part 2: Relevant specifications for ordinary
rectangular waveguides
ISO/IEC Guide 98-3:2008, Uncertainty of measurement – Part 3: Guide to the expression of
uncertainty in measurement (GUM:1995)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-726 apply.
4 General
4.1 Standardized types
The series of flanges for ordinary rectangular waveguides covered by this standard are shown
in Tables 5 to 9 and Figures 1 to 29.
Flat flanges can be used with metal plate air seal gaskets or shims (an example is shown in
Figure 13).
4.2 Flange designation
Waveguide flanges covered by the standard shall be indicated by a reference number
comprising the following information:

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SIST EN 60154-2:2017
– 8 – IEC 60154-2:2016 © IEC 2016
a) the number of the present IEC Publication (60154);
b) the letters “IEC";
c) a dash;
d) a letter relating to the basic construction of the flange, flange style, viz:
P = a flange having a gasket groove but no choke groove (formerly called pressurizable).
C = a choke flange with a gasket groove (formerly called choke, pressurizable).
U = a flange having neither a gasket groove nor a choke groove (formerly called
1
unpressurizable ;
e) a letter for the flange type according to the drawing. Flanges with the same letter and of
the same waveguide size can be mated;
f) the letter and number of the waveguide for which the flange is designed.
Example:
"60154 IEC − UDR 120" denotes a flange without a gasket groove of Type D, for use with rectangular waveguide
60153 IEC – R 120.
5 Mechanical requirements
5.1 Dimensions
5.1.1 Alignment holes
Holes which are intended as alignment holes are clearly indicated in the drawings and shall
be precision drilled. These alignment holes shall be those which are the nearest to the narrow
side of the waveguide.
Holes which are not intended as alignment holes may be less accurately located than are the
alignment holes, but shall be of correspondingly larger diameter to ensure mating of the
flanges.
5.1.2 Shank diameter of fixing bolts used for alignment
The basic values and deviations thereon are specified in Tables 1 to 5 and Figures 15 to 21.
5.1.3 Relation between shank and alignment hole diameters
For each individual flange, the proper mating of two flanges is ensured by specifying:
a) the location and basic diameters of the holes and the deviations thereon;
b) the basic diameters of the shanks of coupling bolts with the appropriate fit.
For practical reasons, the ISO fits given in Table 1 are recommended:

_____________
1
AII flat flanges shall have this designation, including those that can be made pressure tight by using gaskets as
indicated in 4.1.

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SIST EN 60154-2:2017
IEC 60154-2:2016 © IEC 2016 – 9 –
Table 1 – ISO specifications
Type of flange Range of size Fit
R12 and larger All
R 14 – R 32 A9
Rectangular flanges for type R waveguide
R 40 – R 70 B9
R 84 and smaller C9
Circular flange for type R waveguide All B9

When electrical requirements make it necessary, the hole position tolerance should be
reduced and the hole diameter fit to the shank should be improved accordingly.
Actual values are shown in the respective drawings and tables.
5.1.4 Overall dimensions and thickness of flanges
The values quoted are taken from established designs and it should be noted that these
values are based in general on the use of brass, but for other materials other values might be
more appropriate.
5.1.5 Surface roughness of contact area of flanges
For subsequent study.
5.1.6 Flatness of contact area
The flatness of contact area shall be better than the values given in Table 2:
Table 2 – Requirements of root mean square of roughness on the contact area
Range of sizes Requirement of root mean square of roughness
mm
R 12 and larger dimensions For subsequent study
R 14 – R 26 ≤ 0,05
R 32 – R 180 ≤ 0,02
R 220 and smaller dimensions
≤ 0,01

5.1.7 Perpendicularity of the axis of the holes
The perpendicularity of the axis of the holes to the contact area of the flange shall be
90° ± 1/4°.
5.1.8 General requirements for assemblies
Positioning of the holes shall be based on the theoretical symmetry lines of the inside cross-
section of the waveguide unless otherwise indicated.
5.1.9 Perpendicularity of the contact area
The perpendicularity of the contact area of the flange to the axis of the waveguide shall be
90° ± 1/4°.

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5.2 Additional requirements for unmounted flanges
5.2.1 General
The drawings shown are for mounted flanges. In the individual drawings, one or more
methods are shown by way of example for the mounting of flanges to the waveguide. This,
however, does not exclude socket or through-type methods of mounting if the actual
dimensions allow this. For flanges having a choke groove, the socket type method should be
used.
In the case of flange sizes PDR 3 to PDR 12 inclusive and UDR 3 to UDR 12 inclusive, the
particular cross-section of the flanges to be used is left to the discretion of the individual user.
For the grooved flanges, a rectangular gasket is employed. An example is shown in Figure 14.
The dimensions of the grooves and gaskets for flange sizes PDR 3 to PDR 12 inclusive have
been left for subsequent study.
The flanges are designed for copper alloys, aluminium alloys and magnesium alloys. The
particular type of alloy and finish is to be specified by the user. Unless otherwise specified,
means shall be provided to reduce to a minimum galvanic or other corrosive action. The
particular type of gasket and gasket material is to be specified by the user.
For pre-drilled flanges, the positioning of the holes should be based on the theoretic
symmetry lines of the flange aperture.
5.2.2 Shape of aperture
The requirements for the dimensions of the aperture in the flange only apply to that part which
effects mating between the flange and the waveguide.
The basic dimensions of the flange aperture shown in Table 1 are equal to the basic outside
dimensions of the tubes according to IEC 60153-2.
The deviations for the dimensions of the aperture will depend on the materials and assembly
methods and shall, therefore, be determined by agreement between purchaser and
manufacturer.
For socket types, the front aperture should have dimensions within the deviations specified for
the inside cross-section of the appropriate size of waveguide.
5.2.3 Ordering information
When ordering unmounted flanges, an allowance should be made on certain of the specified
dimensions to cover the effects of possible machining after mounting.
5.3 Information on reflection
The reflections at the flange joint are of three kinds:
a) those caused by the allowed deviations on the internal dimensions of the waveguides;
b) those caused by lateral displacements of the two flange assemblies;
c) those caused by the chokes (in the following, these reflections are not taken into account).
When the deviations on the dimensions of the waveguides (according to IEC 60153-2) and of
the assemblies (according to this standard) sum up to cause maximum lateral displacement
and maximum changes of the waveguide internal dimensions, the theoretical maximum
reflection may be calculated by the ISO/IEC Guide 98-3: 2008 and equation (1):

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SIST EN 60154-2:2017
IEC 60154-2:2016 © IEC 2016 – 11 –
2
2
 
2
2 2 2
    2
 
l Δa 4,934l Δa'
Δb 7,8957Δb'
 g   g 
   
 
 (1)
Return loss=−10log +  + + dB
 
 3   3   
b l b
4a   a
g
 
 
   
 
where
a is the basic inside width of the waveguide;
b is the basic inside height of the waveguide;
l is the waveguide wavelength;
g
∆a and ∆b  are the waveguide internal deviations;
∆a' and ∆b'  are displacements of the waveguide axes.
NOTE 1 The first term within brackets represents the worst case reflection component at a flange joint caused by
changes of the waveguide internal dimensions.
NOTE 2 The second term within brackets represents the reflection component at a flange joint caused by the
displacement of the flange assemblies.
At the high end of the waveguide frequency
...

SLOVENSKI STANDARD
SIST EN 60154-2:2017
01-januar-2017
1DGRPHãþD
SIST EN 60154-2:1999
SIST EN 60154-2:1999/A1:1998
Prirobnice za valovode - 2. del: Ustrezne specifikacije za prirobnice za navadne
pravokotne valovode (IEC 60154-2:2016)
Flanges for waveguides - Part 2: Relevant specifications for flanges for ordinary
rectangular waveguides (IEC 60154-2:2016)
Flansche für Hohlleiter - Teil 2: Allgemeine Anforderungen für Flansche für Rechteck-
Hohlleiter (IEC 60154-2:2016)
Brides pour guides d'ondes - Partie 2: Spécifications particulières de brides pour guides
d'ondes rectangulaires normaux (IEC 60154-2:2016)
Ta slovenski standard je istoveten z: EN 60154-2:2016
ICS:
33.120.10 Koaksialni kabli. Valovodi Coaxial cables. Waveguides
SIST EN 60154-2:2017 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD EN 60154-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
November 2016
ICS 33.100.10 Supersedes EN 60154-2:1997
English Version
Flanges for waveguides - Part 2: Relevant specifications for
flanges for ordinary rectangular waveguides
(IEC 60154-2:2016)
Brides pour guides d'ondes - Partie 2: Spécifications Flansche für Hohlleiter - Teil 2: Allgemeine Anforderungen
applicables relatives aux brides pour guides d'ondes an Flansche für Rechteck-Hohlleite
rectangulaires normaux (IEC 60154-2:2016)
(IEC 60154-2:2016)
This European Standard was approved by CENELEC on 2016-08-09. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard 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 CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 60154-2:2016 E

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EN 60154-2:2016
European foreword
The text of document 46F/305/CDV, future edition 3 of IEC 60154-2, prepared by SC 46F "RF and
microwave passive components", of IEC/TC 46 "Cables, wires, waveguides, RF connectors, RF and
microwave passive components and accessories" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN 60154-2:2016.
The following dates are fixed:
(dop) 2017-05-25
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2019-11-25
• latest date by which the national standards conflicting with
the document have to be withdrawn

This document supersedes EN 60154-2:1997.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60154-2:2016 was approved by CENELEC as a European
Standard without any modification.
2

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EN 60154-2:2016

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60050 series International Electrotechnical Vocabulary_- - series
Part_102: Mathematics_- General
concepts and linear algebra
IEC 60153-2 2016 Hollow metallic waveguides - Part 2: EN 60153-2 2016
Relevant specifications for ordinary
rectangular waveguides
ISO/IEC Guide 98-3 2008 Uncertainty of measurement -- Part 3: - -
Guide to the expression of uncertainty in
measurement (GUM:1995)

3

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IEC 60154-2

®


Edition 3.0 2016-07




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside










Flanges for waveguides –

Part 2: Relevant specifications for flanges for ordinary rectangular waveguides




Brides pour guides d'ondes –

Partie 2: Spécifications applicables relatives aux brides pour guides d'ondes

rectangulaires normaux















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 33.120.10 ISBN 978-2-8322-3496-9



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – IEC 60154-2:2016 © IEC 2016
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references. 7
3 Terms and definitions . 7
4 General . 7
4.1 Standardized types . 7
4.2 Flange designation . 7
5 Mechanical requirements . 8
5.1 Dimensions . 8
5.1.1 Alignment holes . 8
5.1.2 Shank diameter of fixing bolts used for alignment . 8
5.1.3 Relation between shank and alignment hole diameters . 8
5.1.4 Overall dimensions and thickness of flanges . 9
5.1.5 Surface roughness of contact area of flanges . 9
5.1.6 Flatness of contact area . 9
5.1.7 Perpendicularity of the axis of the holes . 9
5.1.8 General requirements for assemblies . 9
5.1.9 Perpendicularity of the contact area. 9
5.2 Additional requirements for unmounted flanges . 10
5.2.1 General . 10
5.2.2 Shape of aperture . 10
5.2.3 Ordering information . 10
5.3 Information on reflection . 10

Figure 1 – Flange type A: 60154 IEC-AR 32 . 16
Figure 2 – Flange type A: 60154 IEC-AR 32 gasket . 16
Figure 3 – Flange type A: 60154 IEC-AR 48 . 17
Figure 4 – Flange type A: 60154 IEC-AR 48 gasket . 17
Figure 5 – Flange type A: 60154 IEC-AR 58-70 . 18
Figure 6 – Flange type A: 60154 IEC-AR 58-70 gasket . 18
Figure 7 – Flange type B: 60154 IEC-BR 84-320 . 21
Figure 8 – Flange type B: 60154 IEC-BR 84-320 gasket . 21
Figure 9 – Flange type C: 60154 IEC-PCR 220-500 . 24
Figure 10 – Flange type C: 60154 IEC-PCR 220-500 gasket . 24
Figure 11 – Flange type C: 60154 IEC-PCR 220-500 . 27
Figure 12 – Flange type C: 60154 IEC-PCR 220-500 gasket . 27
Figure 13 – Recommended gaskets for flanges without gasket groves . 28
Figure 14 – Recommended gaskets for type PDR 3 to 12 flanges . 29
Figure 15 – Flange type D: 60154 IEC-PDR 3 AND UDR 3 . 30
Figure 16 – Flange type D: 60154 IEC-PDR 4 AND UDR 4 . 31
Figure 17 – Flange type D: 60154 IEC-PDR 5 AND UDR 5 . 32
Figure 18 – Flange type D: 60154 IEC-PDR 6 AND UDR 6 . 33

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IEC 60154-2:2016 © IEC 2016 – 3 –
Figure 19 – Flange type D: 60154 IEC-PDR 8 AND UDR 8 . 34
Figure 20 – Flange type D: 60154 IEC-PDR 9 AND UDR 9 . 35
Figure 21 – Flange type D: 60154 IEC-PDR 12 AND UDR 12 . 36
Figure 22 – Flange type D: 60154 IEC-PDR 14 – 40 . 37
Figure 23 – Flange type D: 60154 IEC-PDR 48 – 100 . 38
Figure 24 – Flange type D: 60154 IEC-UDR 120 – 180 . 39
Figure 25 – Flange type D: 60154 IEC-PDR 120 – 180 . 40
Figure 26 – Flange type E: 60154 IEC-UER 32 . 43
Figure 27 – Flange type E: 60154 IEC-UER 40-100 . 44
Figure 28 – Flange type F: 60154 IEC-UFC without choke or gasket groove . 47
Figure 29 – Flange type G: 60154 IEC-UGC without choke or gasket groove . 49

Table 1 – ISO specifications . 9
Table 2 – Requirements of root mean square of roughness on the contact area . 9
Table 3 – The worst "return loss" in (positive) decibels for waveguides . 12
Table 4 – Flange types . 14
Table 5 – Dimensions of type A flange for ordinary rectangular waveguides . 19
Table 6 – Dimensions of type B flange for ordinary rectangular waveguides . 22
Table 7 – Dimensions of type C flange for ordinary rectangular waveguides . 25
Table 8 – Dimensions of type D flange for ordinary rectangular waveguides . 41
Table 9 – Dimensions of type E flange for ordinary rectangular waveguides . 45

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– 4 – IEC 60154-2:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

FLANGES FOR WAVEGUIDES –

Part 2: Relevant specifications for flanges
for ordinary rectangular waveguides

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60154-2 has been prepared by subcommittee 46F: RF and
microwave passive components, of IEC technical committee 46: Cables, wires, waveguides,
RF connectors, RF and microwave passive components and accessories
This third edition cancels and replaces the second edition published in 1980. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revise the estimation for return loss at connection interface of waveguides;
b) add two type of waveguide flange for high frequency application, i.e. over 50 GHz;
c) expand the operation frequency range up to 3,3 THz;
d) rename the frequency band over R 1200, i.e. R1,2k.

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IEC 60154-2:2016 © IEC 2016 – 5 –
The text of this standard is based on the following documents:
CDV Report on voting
46F/305/CDV 46F/319/RVC

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60154 series, published under the general title Flanges for
waveguides, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.

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– 6 – IEC 60154-2:2016 © IEC 2016
INTRODUCTION
This International Standard relates to straight hollow metallic tubing for use as waveguides in
electronic equipment. In recent years, the operation frequency of waveguide components and
systems has been extended to 1 THz and above. However, the IEC 60154 series, series of
standards for flanges for waveguides, currently specifies the interface designs up to 40 GHz
for rectangular waveguide. In addition to this, the current issues of the IEC 60154 series of
standards were issued in the 1970’s and do not meet the needs of current applications. This
new edition of IEC 60154-2 addresses these two issues by extending the frequency coverage
to 3 300 GHz and by addressing current applications for this type of waveguide.

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IEC 60154-2:2016 © IEC 2016 – 7 –
FLANGES FOR WAVEGUIDES –

Part 2: Relevant specifications for flanges
for ordinary rectangular waveguides



1 Scope
This part of IEC 60154 specifies the dimensions of flanges for ordinary rectangular waveguide
for use in electronic equipment.
It covers requirements for flanges drilled before or after mounting on waveguides. It should be
noted that for optimum electrical performance, post-drilling of the alignment holes after
mounting is recommended.
The aim of this standard is to specify for waveguide flanges the mechanical requirements
necessary to ensure compatibility and, as far as practicable, interchangeability as well as to
ensure adequate electrical performance.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60050 (all parts), International Electrotechnical Vocabulary (available at
IEC 60153-2:2016, Hollow metallic waveguides – Part 2: Relevant specifications for ordinary
rectangular waveguides
ISO/IEC Guide 98-3:2008, Uncertainty of measurement – Part 3: Guide to the expression of
uncertainty in measurement (GUM:1995)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-726 apply.
4 General
4.1 Standardized types
The series of flanges for ordinary rectangular waveguides covered by this standard are shown
in Tables 5 to 9 and Figures 1 to 29.
Flat flanges can be used with metal plate air seal gaskets or shims (an example is shown in
Figure 13).
4.2 Flange designation
Waveguide flanges covered by the standard shall be indicated by a reference number
comprising the following information:

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– 8 – IEC 60154-2:2016 © IEC 2016
a) the number of the present IEC Publication (60154);
b) the letters “IEC";
c) a dash;
d) a letter relating to the basic construction of the flange, flange style, viz:
P = a flange having a gasket groove but no choke groove (formerly called pressurizable).
C = a choke flange with a gasket groove (formerly called choke, pressurizable).
U = a flange having neither a gasket groove nor a choke groove (formerly called
1
unpressurizable ;
e) a letter for the flange type according to the drawing. Flanges with the same letter and of
the same waveguide size can be mated;
f) the letter and number of the waveguide for which the flange is designed.
Example:
"60154 IEC − UDR 120" denotes a flange without a gasket groove of Type D, for use with rectangular waveguide
60153 IEC – R 120.
5 Mechanical requirements
5.1 Dimensions
5.1.1 Alignment holes
Holes which are intended as alignment holes are clearly indicated in the drawings and shall
be precision drilled. These alignment holes shall be those which are the nearest to the narrow
side of the waveguide.
Holes which are not intended as alignment holes may be less accurately located than are the
alignment holes, but shall be of correspondingly larger diameter to ensure mating of the
flanges.
5.1.2 Shank diameter of fixing bolts used for alignment
The basic values and deviations thereon are specified in Tables 1 to 5 and Figures 15 to 21.
5.1.3 Relation between shank and alignment hole diameters
For each individual flange, the proper mating of two flanges is ensured by specifying:
a) the location and basic diameters of the holes and the deviations thereon;
b) the basic diameters of the shanks of coupling bolts with the appropriate fit.
For practical reasons, the ISO fits given in Table 1 are recommended:

_____________
1
AII flat flanges shall have this designation, including those that can be made pressure tight by using gaskets as
indicated in 4.1.

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IEC 60154-2:2016 © IEC 2016 – 9 –
Table 1 – ISO specifications
Type of flange Range of size Fit
R12 and larger All
R 14 – R 32 A9
Rectangular flanges for type R waveguide
R 40 – R 70 B9
R 84 and smaller C9
Circular flange for type R waveguide All B9

When electrical requirements make it necessary, the hole position tolerance should be
reduced and the hole diameter fit to the shank should be improved accordingly.
Actual values are shown in the respective drawings and tables.
5.1.4 Overall dimensions and thickness of flanges
The values quoted are taken from established designs and it should be noted that these
values are based in general on the use of brass, but for other materials other values might be
more appropriate.
5.1.5 Surface roughness of contact area of flanges
For subsequent study.
5.1.6 Flatness of contact area
The flatness of contact area shall be better than the values given in Table 2:
Table 2 – Requirements of root mean square of roughness on the contact area
Range of sizes Requirement of root mean square of roughness
mm
R 12 and larger dimensions For subsequent study
R 14 – R 26 ≤ 0,05
R 32 – R 180 ≤ 0,02
R 220 and smaller dimensions
≤ 0,01

5.1.7 Perpendicularity of the axis of the holes
The perpendicularity of the axis of the holes to the contact area of the flange shall be
90° ± 1/4°.
5.1.8 General requirements for assemblies
Positioning of the holes shall be based on the theoretical symmetry lines of the inside cross-
section of the waveguide unless otherwise indicated.
5.1.9 Perpendicularity of the contact area
The perpendicularity of the contact area of the flange to the axis of the waveguide shall be
90° ± 1/4°.

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– 10 – IEC 60154-2:2016 © IEC 2016
5.2 Additional requirements for unmounted flanges
5.2.1 General
The drawings shown are for mounted flanges. In the individual drawings, one or more
methods are shown by way of example for the mounting of flanges to the waveguide. This,
however, does not exclude socket or through-type methods of mounting if the actual
dimensions allow this. For flanges having a choke groove, the socket type method should be
used.
In the case of flange sizes PDR 3 to PDR 12 inclusive and UDR 3 to UDR 12 inclusive, the
particular cross-section of the flanges to be used is left to the discretion of the individual user.
For the grooved flanges, a rectangular gasket is employed. An example is shown in Figure 14.
The dimensions of the grooves and gaskets for flange sizes PDR 3 to PDR 12 inclusive have
been left for subsequent study.
The flanges are designed for copper alloys, aluminium alloys and magnesium alloys. The
particular type of alloy and finish is to be specified by the user. Unless otherwise specified,
means shall be provided to reduce to a minimum galvanic or other corrosive action. The
particular type of gasket and gasket material is to be specified by the user.
For pre-drilled flanges, the positioning of the holes should be based on the theoretic
symmetry lines of the flange aperture.
5.2.2 Shape of aperture
The requirements for the dimensions of the aperture in the flange only apply to that part which
effects mating between the flange and the waveguide.
The basic dimensions of the flange aperture shown in Table 1 are equal to the basic outside
dimensions of the tubes according to IEC 60153-2.
The deviations for the dimensions of the aperture will depend on the materials and assembly
methods and shall, therefore, be determined by agreement between purchaser and
manufacturer.
For socket types, the front aperture should have dimensions within the deviations specified for
the inside cross-section of the appropriate size of waveguide.
5.2.3 Ordering information
When ordering unmounted flanges, an allowance should be made on certain of the specified
dimensions to cover the effects of possible machining after mounting.
5.3 Information on reflection
The reflections at the flange joint are of three kinds:
a) those caused by the allowed deviations on the internal dimensions of the waveguides;
b) those caused by lateral displacements of the two flange assemblies;
c) those caused by the chokes (in the following, these reflections are not taken into account).
When the deviations on the dimensions of the waveguides (according to IEC 60153-2) and of
the assemblies (according to this standard) sum up to cause maximum lateral displacement
and maximum changes of the waveguide internal dimensions, the theoretical maximum
reflection may be calculated by the ISO/IEC Guide 98-3: 2008 and equation (1):

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IEC 60154-2:2016 © IEC 2016 – 11 –
2
2
 
2
2 2 2
    2
 
l Δa 4,934l Δa'
Δb 7,8957Δb'
 g   g 
   
 
 (1)
Return loss=−10log +  + + dB
 
 3   3   
b l b
4a   a
g
 
 
   
 
where
a is the basic inside width of the waveguide;
b is the basic inside height of the waveguide;
l is the waveguide wavelength;
g
∆a and ∆b  are the waveguide internal deviations;
∆a' and ∆b'  are displacements of the waveguide axes.
NOTE 1 The first term within brackets represents the worst case reflection component at a flange joint caused by
changes of the waveguide internal dimensions.
NOTE 2 The second term within brackets represents the reflection component at a flange joint caused by the
displacement of the flange assemblies.
At the high end of the waveguide frequency band, the reflection component is maximum when the displacement
exists in the short wall direction only.
At the low end of the waveguide frequency band, the reflection component is maximum when the displacement
exists in the long wall direction only.
NOTE 3 The maximum reflection at the high end of the waveguide frequency band is smaller than the maximum
reflection at the low end of the band for the small magnitude of displacement.
NO
...

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