Hollow metallic waveguides - Part 2: Relevant specifications for ordinary rectangular waveguides

IEC 60153-2:2016 specifies straight hollow metallic tubing of ordinary rectangular waveguide for use as waveguides in electronic equipment. The aim of this standard is to specify for hollow metallic waveguides:
a) the details necessary to ensure compatibility and, as far as essential, interchangeability;
b) test methods;
c) uniform requirements for the electrical and mechanical properties. It should be noted that no recommendations are made for the materials to be used for waveguides. The choice of material is agreed between customer and manufacturer. This document should be read in conjunction with IEC 60153-1, which gives general requirements and test methods. This edition includes the following significant technical changes with respect to the previous edition:
a) expand and revise the operation frequency range for waveguides;
b) revise the allowance of aperture dimensions;
c) revise the test method for aperture dimensions;
d) revise the equation of attenuation.
This publication is to be read in conjunction with IEC 60153-1:2016

Guides d'ondes métalliques creux - Partie 2: Spécifications applicables relatives aux guides d'ondes rectangulaires normaux

L'IEC 60153-2:2016 spécifie des tubes métalliques creux droits de guides d'ondes rectangulaires normaux destinés à être utilisés comme guides d'ondes dans les équipements électroniques. La présente norme a pour but de spécifier pour les guides d'ondes métalliques creux:
a) les détails nécessaires pour assurer la compatibilité et, dès lors que c'est essentiel, l'interchangeabilité;
b) les méthodes d'essai;
c) les exigences uniformes concernant les propriétés électriques et mécaniques. Il convient de noter qu'aucune recommandation n'est faite en ce qui concerne les matériaux à utiliser pour les guides d'ondes. Le choix des matériaux fait l'objet d'un accord entre le client et le fabricant. Il convient de lire le présent document conjointement avec l'IEC 60153-1, qui donne des exigences générales et des méthodes d'essai. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) extension et révision de la plage de fréquences de fonctionnement pour les guides d'ondes;
b) révision des tolérances sur les dimensions d'ouvertures;
c) révision de la méthode d'essai des dimensions d'ouverture;
d) révision des équations d'affaiblissement.
Cette publication doit être lue conjointement avec la IEC 60153-1:2016.

General Information

Status
Published
Publication Date
17-May-2016
Current Stage
PPUB - Publication issued
Completion Date
18-May-2016
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IEC 60153-2
Edition 3.0 2016-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Hollow metallic waveguides –
Part 2: Relevant specifications for ordinary rectangular waveguides
Guides d'ondes métalliques creux –
Partie 2: Spécifications applicables relatives aux guides d'ondes rectangulaires
normaux
IEC 60153-2:2016-05(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60153-2
Edition 3.0 2016-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Hollow metallic waveguides –
Part 2: Relevant specifications for ordinary rectangular waveguides
Guides d'ondes métalliques creux –
Partie 2: Spécifications applicables relatives aux guides d'ondes rectangulaires
normaux
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.120.10 ISBN 978-2-8322-3383-2

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
---------------------- Page: 3 ----------------------
– 2 – IEC 60153-2:2016 © IEC 2016
CONTENTS

FOREWORD ......................................................................................................................... 3

INTRODUCTION ................................................................................................................... 5

1 Scope ............................................................................................................................ 6

2 Normative references..................................................................................................... 6

3 Terms and definitions .................................................................................................... 6

4 General ......................................................................................................................... 6

4.1 Standardized types ............................................................................................... 6

4.2 Type designation ................................................................................................... 6

4.3 Frequency range ................................................................................................... 7

5 Mechanical requirements ............................................................................................... 7

5.1 General ................................................................................................................. 7

5.2 Dimensions ........................................................................................................... 7

5.2.1 General ......................................................................................................... 7

5.2.2 Inside dimensions .......................................................................................... 7

5.2.3 Wall thickness ................................................................................................ 8

5.2.4 Eccentricity .................................................................................................... 8

5.2.5 Outside dimensions ........................................................................................ 8

5.2.6 Rectangularity of cross-section ....................................................................... 8

5.3 Other mechanical requirements ............................................................................. 9

5.3.1 Bow ............................................................................................................... 9

5.3.2 Twist ............................................................................................................ 10

5.3.3 Surface roughness ....................................................................................... 10

5.3.4 Internal stresses .......................................................................................... 10

5.4 Electrical tests .................................................................................................... 10

5.4.1 Attenuation .................................................................................................. 10

5.5 Additional tests – Gas tightness ........................................................................... 11

Table 1 – Deviation of aperture dimension ............................................................................. 7

Table 2 – Deviation of outside dimensions ............................................................................. 8

Table 3 – Specification and attenuation constants (informative) ........................................... 12

---------------------- Page: 4 ----------------------
IEC 60153-2:2016 © IEC 2016 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOLLOW METALLIC WAVEGUIDES –
Part 2: Relevant specifications 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,

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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

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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.

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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 60153-2 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 1974. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) expand and revise the operation frequency range for waveguides;
b) revise the allowance of aperture dimensions;
c) revise the test method for aperture dimensions;
d) revise the equation of attenuation.
---------------------- Page: 5 ----------------------
– 4 – IEC 60153-2:2016 © IEC 2016
The text of this standard is based on the following documents:
CDV Report on voting
46F/303/CDV 46F/317/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 60153 series, published under the general title Hollow metallic

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.
---------------------- Page: 6 ----------------------
IEC 60153-2:2016 © IEC 2016 – 5 –
INTRODUCTION

This International Standard relates to straight hollow metallic tubing for use as waveguides in

electronic equipment. In recent year the operation frequency of waveguide components and

system has been extended to 1 THz and above. However, the first edition of the IEC 60153

series of standards only specified the aperture dimensions for ordinary rectangular waveguide

for frequencies up to 325 GHz. In addition, the first edition of the IEC 60153 series of

standards, dating from the 1960's, does not cover current applications. This new edition of

IEC 60153-2 addresses these two issues by extending the frequency coverage to 3 300 GHz

and by addressing current applications for this type of waveguide.
---------------------- Page: 7 ----------------------
– 6 – IEC 60153-2:2016 © IEC 2016
HOLLOW METALLIC WAVEGUIDES –
Part 2: Relevant specifications for ordinary rectangular waveguides
1 Scope

This part of IEC 60153 specifies straight hollow metallic tubing of ordinary rectangular

waveguide for use as waveguides in electronic equipment.
The aim of this standard is to specify for hollow metallic waveguides:

a) the details necessary to ensure compatibility and, as far as essential, interchangeability;

b) test methods;
c) uniform requirements for the electrical and mechanical properties.

It should be noted that no recommendations are made for the materials to be used for

waveguides. The choice of material is agreed between customer and manufacturer.

This document should be read in conjunction with IEC 60153-1, which gives general

requirements and test methods.
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 60153-1:2016, Hollow metallic waveguides – General requirements and measuring

methods
IEC 60261, Sealing test for pressurized waveguide tubing and assemblies
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 ordinary rectangular waveguides covered by this publication are shown in

Table 1.
4.2 Type designation
For these waveguides, the type designation comprises:
a) the code: 60153 IEC-R
---------------------- Page: 8 ----------------------
IEC 60153-2:2016 © IEC 2016 – 7 –
b) a number characterizing a particular size of waveguide. This number expresses

approximately in multiples of 100 MHz the geometric mean frequency of the recommended

frequency range;

c) if the symbol “K” is being used to indicate a factor of 1 000 (which it is suspected that it is),

then the symbol needs to be in lower case (i.e. “k”), which stands for “kilo” in the SI

system. This affects many waveguide names given in Table 3 and elsewhere in this

standard.
Example:

"60153 IEC-R 100" denotes a 22,860 mm × 10,160 mm (0,900 in × 0,400 in) ordinary rectangular waveguide for

general purposes with a centre frequency of approximately 10 GHz in the dominant mode.

4.3 Frequency range

The frequency range indicated in Table 1 is from approximately 1,25 to 1,9 times the cut-off

frequency in the dominant mode. For any particular type of application, the working frequency

range may be smaller or greater than the frequency range given in the table.
5 Mechanical requirements
5.1 General

It should be noted that no recommendations are made for the materials to be used for

waveguides. The choice of material shall be agreed upon between customer and
manufacturer.
5.2 Dimensions
5.2.1 General

The series of ordinary rectangular waveguides covered by this publication are shown in

Table 1.
5.2.2 Inside dimensions

The nominal values for the waveguide aperture height and width, and the permissible

maximum deviations in these nominal values, are specified in Table 3.

The deviations for both the width and height of the waveguide aperture are summarized in

Table 1.
Table 1 – Deviation of aperture dimension
Range of sizes
Deviation ± (%) of a
R 3 – R 500 0,2
R 620 – R 4K 0,5
R 5K – R 14K 1,0
R 18K – R 36K 2,0

Although some difficulty has been experienced in manufacturing waveguides that meet these

deviation requirements, in practice, small departures from these deviations create no serious

electrical discontinuity problems, except at the terminations of the waveguide.

To accomplish satisfactory electrical mating, it is generally necessary to use a tool for sizing

the waveguide opening after the flange has been mounted.
---------------------- Page: 9 ----------------------
– 8 – IEC 60153-2:2016 © IEC 2016

When accurately sized lengths of waveguides are required for critical component fabrication,

it is industrial practice to pass a sizing mandrel through the entire length of short waveguide

sections.
5.2.3 Wall thickness
The basic values specified in Table 3 conform to the following rules:

The basic wall thickness is defined as half the difference between the basic outside and

inside dimensions in the original systems of units.

After conversion from inches into mm, the values were rounded to the nearest 0,005 mm.

5.2.4 Eccentricity

The eccentricity is defined as half the difference between the measured thickness of opposite

walls. Unless otherwise specified, the eccentricity shall not exceed 10 % of the basic wall

thickness. For the determination of the eccentricity, the thickness shall be measured where

they give the most unfavourable result.
5.2.5 Outside dimensions
The basic values and the deviations are specified in Table 2.
The values of the outside dimensions deviations are also given in Table 2.
Table 2 – Deviation of outside dimensions
Range of sizes
Deviation ±
R12 and larger dimensions For future study
R 14 – R 70 0,10 % of inside basic width
R 84 – R 900 0,05 mm
R 1.2K – R 2.6K 0,025 mm
R 3.2K – R 36K If necessary

No outside dimensions have been specified for some of the largest sizes because a variety of

manufacturing techniques are used.
The outside corner radius (r ) shall be within the following limits:
r = 0,5 t
2min
r = r + 0,5 mm
2max 2min
where t is the basic wall thickness.
5.2.6 Rectangularity of cross-section

The dimensional requirements in 5.2.2 and 5.2.5 do not control the rectangularity of the cross-

section.

The allowed departure from rectangularity is defined by the requirement that the shape of the

inside (outside) cross-section shall be such that it is possible to inscribe the actual internal

(external) cross-section in the area between the specified maximum and minimum internal

(external) rectangles. A suitable method for checking rectangularity is given below by way of

example.
---------------------- Page: 10 ----------------------
IEC 60153-2:2016 © IEC 2016 – 9 –
a) For inside cross-section

A block with the dimensions specified below shall pass through the waveguide without

hindrance.
In drawing the block through the waveguide, precaution shall be taken to keep it
accurately normal to the waveguide axis.
For the dimensions of the block, the following applies:

• basic dimensions of cross-section: basic waveguide aperture size minus 1,1 section

times the deviation;

• deviation on basic inside cross-section dimensions: +0, –0,1 times deviation on

waveguide of cross-section aperture;
• perpendicularity of the sides: within 3 × 10 radians;
• length: 0,2 times internal width of the waveguide.
b) For outside cross-section

The outside cross-section shall be such that it is possible to pass the waveguide through a

standard gauge with an aperture of rectangular cross-section as specified below.
For the dimensions of the aperture, the following applies:

• basic dimensions of cross-section: basic waveguide outside cross-section plus 1,1

times the deviation;

• deviation on basic dimensions of cross-section: –0, + 0,1 times deviation on waveguide

outside cross-section;
• perpendicularity of the sides: not deviating by more than 3 × 10 radians.
5.3 Other mechanical requirements
5.3.1 Bow

Bow is defined as the maximum departure of the actual axis of the waveguide from a straight

line of specified length connecting two points on that axis.

The bow is measured on the external surface of the waveguide. For a length of 10 times the

internal width, the external bow shall not exceed 10 times the specified deviation on the

internal width.

For a length of 50 times the internal width, the external bow shall not exceed 40 times the

specified deviation on the internal width.

For the determination of the external bow, the waveguide shall be so positioned that gravity

does not tend to affect the amount of bow.
---------------------- Page: 11 ----------------------
– 10 – IEC 60153-2:2016 © IEC 2016
5.3.2 Twist

Twist is defined as the rotation, over a specified length, of the cross-section of the waveguide

around the longitudinal axis.
The rate of twist shall not exceed:

• 0,50 per metre for waveguides with an internal width equal or larger than 100 mm;

• 0,50 per waveguide length that is 10 times the internal width for waveguides with an

internal width less than 100 mm.

Over a length equal to 50 times the internal width of the waveguide, the accumulated twist

shall not exceed 2°. The direction of twist should not be systematic in a batch of waveguides.

5.3.3 Surface roughness
Under consideration.
5.3.4 Internal stresses

The waveguide tube shall be cut by means of a saw. The cutting process shall be carefully

controlled to avoid distortion arising from the cutting and the use of a fine high-speed saw is

recommended. After cutting, the cross-section of the waveguide tube shall be within the

specified deviations.
5.4 Electrical tests
5.4.1 Attenuation

The attenuation of a suitable length of waveguide tube shall be measured at a frequency of

1,5 times the cut-off frequency for rectangular waveguides. The accuracy of the measurement

shall be ±10 % of the required value in decibels.
Unless otherwise specified, the maximum attenuation for waveguide IEC-R 100 and

waveguides with larger dimensions shall not exceed 1,3 times the values calculated from the

formula below at a frequency of 1,5 times the cut-off frequency. The values given in Table 3

are for waveguides made of copper with standard resistivity σ = 5,80 × 10 siemens/metre.

Calculations of attenuation shall be based on the following formula which does not apply for

thinly plated surfaces:
Rectangular waveguide (TE mode):
 
f 2b
 
 
f a
 c
a= 2,3272 dB/m (1)
σ 2
b a
 
f f
 
 
f f
c  c
where
σ is the electrical conductivity of inside non-magnetic wall metal;

σ is the electrical conductivity of International Annealed Copper Standard = 5,80 × 10

siemens/metre;
a is the inside width in millimetres;
b is the inside height in millimetres;
---------------------- Page: 12 ----------------------
IEC 60153-2:2016 © IEC 2016 – 11 –

f is the cut-off frequency for TE mode = 149,8/a GHz at 1 013,25 hPa, 23 °C and relative

c 01
humidity = 50 % in air;
f is the frequency at which the attenuation is to be calculated.

For waveguides smaller than R 100, the maximum attenuation values remain for future study.

5.5 Additional tests – Gas tightness
Specification shall be conformed to the tests specified in IEC 60261.
---------------------- Page: 13 ----------------------
– 12 – IEC 60153-2:2016 © IEC 2016
Table 3 – Specification and attenuation constants (informative)
Dimensions in millimetres

Frequency range in GHz for dominant mode Outside cross-section Theoretical value of attenuation in dB/m for waveguide

Type designation Inside cross-section
Radius of corner r
Fot gold plated waveguide For aluminium waveguide For stainless steel waveguide
Recommended 2
Deviation of
Basic wall
Deviation
Cut-off Basic Basic width and
Deviation of Deviation of width Maximum

At recommended At recommended At recommended At recommended At recommended At recommended

thickness of width and
Minimum Maximum Basic Basic height ± of

frequency and height ± (%) of width al height bl minimum maximum minimum maximum minimum maximum

60153 IEC Minimum Maximum width and radius of corner
height ± Minimum Maximum
t basic width a
width a height b
basic width a frequency frequency frequency frequency frequency frequency
height ±

R 3 0,256 0,32 0,49 0,32 0,49 584,2 292,1 1,17 0,20 1,50 0,0011 0,00077 0,0013 0,00084 0,0065 0,0044

R 4 0,280 0,35 0,53 0,35 0,53 533,4 266,7 1,07 0,20 1,50 0,0013 0,00089 0,0014 0,00097 0,0075 0,0051

R 5 0,327 01,41 0,62 0,41 0,62 457,2 228,6 0,91 0,20 1,50 0,0016 0,0011 0,0018 0,0012 0,0094 0,0064

R 6 0,392 0,49 0,75 0,49 0,75 381 190,5 0,76 0,20 1,50 For future study 0,0022 0,0015 0,0024 0,0016 0,012 0,0084

R 8 0,512 0,64 0,98 0,64 0,98 292,1 146,05 0,58 0,20 1,50 0,0032 0,0022 0,0035 0,0024 0,018 0,012

R 9 0,603 0,76 1,15 0,76 1,15 247,65 123,82 0,50 0,20 1,20 0,0041 0,0028 0,0045 0,0031 0,023 0,016

R 12 0,764 0,96 1,46 0,96 1,46 195,58 97,79 0,39 0,20 1,20 0,0058 0,0040 0,0064 0,0044 0,033 0,023

R 14 0,905 1,13 1,73 1,13 1,73 165,1 82,55 0,33 0,20 1,20 2,030 169,16 86,61 0,17 0,10 1 1,5 0,0076 0,0051 0,0084 0,0056 0,044 0,029

R 18 1,15 1,45 2,20 1,45 2,2 129,54 64,77 0,26 0,20 1,20 2,030 113,60 68,83 0,13 0,10 1 1,5 0,011 0,0074 0,012 0,0081 0,062 0,042

R 22 1,37 1,72 2,61 1,72 2,61 109,22 54,61 0,22 0,20 1,20 2,030 113,28 58,67 0,11 0,10 1 1,5 0,014 0,0095 0,015 0,0105 0,080 0,055

R 26 1,73 2,17 3,30 2,17 3,3 86,36 43,18 0,173 0,20 1,20 2,030 90,42 47,24 0,09 0,10 1 1,5 0,020 0,014 0,022 0,015 0,11 0,078

R 32 2,07 2,60 3,95 2,6 3,95 72,14 34,04 0,144 0,20 1,20 2,030 75,20 38,10 0,07 0,10 1 1,5 0,027 0,019 0,030 0,020 0,15 0,11

R 35 2,25 2,82 4,29 2,82 4,29 66,37 29
...

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