SIST HD 123.2 S1:2002
(Main)Hollow metallic waveguides -- Part 2: Relevant specifications for ordinary rectangular waveguides
Hollow metallic waveguides -- Part 2: Relevant specifications for ordinary rectangular waveguides
Contains a detailed description of ordinary rectangular waveguides - Type R, including mechanical requirements, electrical and gas tightness tests, and a table drawn up in inches and millimetres.
Metallische Hohlleiter -- Teil 2: Allgemeine Empfehlungen für Rechteck-Hohlleite
Guides d'ondes métalliques creux -- Partie 2: Spécifications particulières pour les guides d'ondes rectangulaires normaux
Contient une description détaillée des guides d'ondes rectangulaires normaux - type R, comprenant les prescriptions mécaniques, les essais électriques ainsi que les essais d'étanchéité au gaz, avec, en appui, un tableau de dimensions rédigé en inches et en millimètres.
Hollow metallic waveguides - Part 2: Relevant specifications for ordinary rectangular waveguides
General Information
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Standards Content (Sample)
SLOVENSKI SIST HD 123.2 S1:2002
prva izdaja
STANDARD
september 2002
Hollow metallic waveguides - Part 2: Relevant specifications for ordinary rectangular
waveguides
ICS 33.120.10 Referenčna številka
SIST HD 123.2 S1:2002(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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NORME CEI
INTERNATIONALE IEC
60153-2
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
1974-01
Guides d'ondes métalliques creux
Deuxième partie:
Spécifications particulières pour les guides
d'ondes rectangulaires normaux
Hollow metallic waveguides
Part 2:
Relevant specifications for ordinary rectangular
waveguides
© IEC 1974 Droits de reproduction réservés — Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
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Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
L
PRICE CODE
International Electrotechnical Commission
IEC
MemuyHaponHas+ 3neMTpoTexHH4ecnaa HoMHCCHa
Pour prix, voir catalogue en vigueur
• • For price, see current catalogue
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CONTENTS
Page
FOREWORD 5
PREFACE 5
Clause
General 9
1.
1.1 Standardized types 9
9
1.2 Type designation
9
1.3 Frequency range
Mechanical requirements 9
2.
2.1 Dimensions 11
17
2.2 Other mechanical requirements
Electrical tests 19
3.
19
3.1 Attenuation
19
4. Additional tests
19
4.1 Gas tightness
21
TABLE I (in mm)
(in inches) 22
TABLE I
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
HOLLOW METALLIC WAVEGUIDES
Relevant specifications for ordinary rectangular waveguides
Part 2 :
FOREWORD
1) The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on which all the
an international con-
National Committees having a special interest therein are represented, express, as nearly as possible,
sensus of opinion on the subjects dealt with.
2) They have the form of recommendations for international use and they are accepted by the National Committees in that
sense.
3) In order to promote international unification, the IEC expresses the wish that all National Committees should adopt the
text of the I EC recommendation for their national rules in so far as national conditions will permit. Any divergence
between the I EC recommendations and the corresponding national rules should, as far as possible, be clearly indicated
in the latter.
an indication of approval and has no responsibility when
4) The IEC has not laid down any procedure concerning marking as
an item of equipment is declared to comply with one of its recommendations.
PREFACE
This publication was prepared by Sub-Committee 46B, Waveguides and their Accessories, of Technical
Committee No. 46, Cables, Wires and Waveguides for Telecommunication Equipment.
It contains Part 2: Relevant Specifications for Ordinary Rectangular Waveguides, of the complete IEC
an d
recommendation for hollow metallic waveguides, it is intended to be used in conjunction with Part 1 :
General Requirements and Measuring Methods, which is issued as I EC Publication 153-1.
Detail specifications for other types of waveguides are issued in companion publications.
The amendments and supplements contained in this second edition of Publication 153-2 have been approved
in several Six Months' Rule documents.
The amendments to Table I were discussed at meetings held in Baden-Baden in June 1965 and in The Hague
in November 1970. The resulting drafts were submitted to the National Committees for approval under the
Six Months' Rule as follows :
document 46B(Central Office)26, circulated in February 1966
document 46B(Central Office)50, circulated in May 1971.
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The following countries voted explicitly in favour of publication :
Document Document
46B(Central Office)50
46B(Central Office)26
Belgium
Australia
Czechoslovakia
Belgium
Denmark
Czechoslovakia
France
Denmark
Germany
Finland
Iran
France
Israel
Germany
Italy
Israel
Japan
Italy
Netherlands
Japan
Poland
Netherlands
Portugal
Norway
Sweden
Poland
Switzerland Spain
Turkey
Sweden
United Kingdom
Switzerland
United States of America
Turkey
United States of America
The United Kingdom cast a negative vote on document 46B(Central Office)26.
and were deemed necessary
Certain amendments contained in this publication are of an editorial nature
by the Editing Committee of SC 46B.
DIMENSIONAL DEVIATIONS
The values for the permissible deviations in this recommendation follow the principles given in ISO Recom-
mendation R286, ISO System of Limits and Fits, where:
Deviation is defined as :
Algebraical difference between a size (actual, maximum, etc.) and the corresponding basic size.
Upper deviation is defined as :
Algebraical difference between the maximum limit of size and the corresponding basic size.
And lower deviation is defined as :
Algebraical difference between the minimum limit of size and the corresponding basic size.
It should be noted that the upper and lower deviations may have like signs, unlike signs or either deviation
may be zero. This permits the basic sizes of mating shafts and holes to be identical.
undesirable limitation, in that the basic
The older concept of plus tolerances and minus tolerances has an
sizes of mating shafts and holes cannot be identical for clearance fits.
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HOLLOW METALLIC WAVEGUIDES
Part 2 : Relevant specifications for ordinary rectangular waveguides
ORDINARY RECTANGULAR WAVEGUIDES — TYPE R
Clause No. Item
1. General
1.1 Standardized types
The series of ordinary rectangular waveguides covered by this publication are
shown in Table I.
1.2 Type designation
For these waveguides, the type designation comprises :
a) The code : 153 IEC-R
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.
Example : 153
IEC-R 100,
denotes a 22.860 mm X 10.160 mm (0.900 in X 0.400 in) ordinary
rectangular waveguide for general purposes with a centre frequency of
approximately 10 GHz in the dominant mode.
1.3 Frequency range
The frequency range indicated in Table I is from 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.
2. Mechanical requirements
It should be noted that no recommendations are made for the materials to be used
for waveguides. The choice of material must be agreed upon between customer and
manufacturer.
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ORDINARY RECTANGULAR WAVEGUIDES — TYPE R (continued)
Clause No. Item
2.1 Dimensions
2.1.2.1 Inside dimensions
The basic values and the deviations are specified in Table I.
The deviations both on width and height shall be in accordance with the following
table.
±
Deviation
Range of sizes
mm in
R 12 and larger dimensions For future study
R 14 — R 220 500 of inside basic width
0.0008
R 260 — R 620 0.02
0.0127 0.0005
R 740 — R 900
R 1200 0.0076 0.0003
R 1400 — R 1800 0.0064 0.00025
R 2200 — R 2600 0.0051 0.0002
Note. — The inside cross-section deviations and radii for the small sizes of waveguide, identified
by ** in Table I, are those values that are required for the proper electrical mating of
waveguides and components.
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.
When accurately sized lengths of waveguides are required for critical component fabri-
cation, it is industrial practice to pass a sizing mandrel through the entire length of short
waveguide sections.
Wall thickness
2.1.2.2
The basic values specified in Table I 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.
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ORDINARY RECTANGULAR WAVEGUIDES — TYPE R (continued)
Clause No.
Item
After conversion from inches into mm the values were rounded to the nearest
0.005 mm.
After conversion from mm into inches the values were rounded to the nearest
0.001 in.
2.1.2.3 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.
2.1.2.4
Outside dimensions
The basic values and the deviations are specified in Table I.
The values of the outside diameter deviations given in Table I are in accordance with
the following table.
±
Deviations
Range of sizes
mm in
R 12 and larger dimensions
For future study
R 14 — R 22 0.20
0.008
R 26 — R 40
of inside basic width
500
R 48
0.10 0.004
R 58 — R 70
0.08 0.003
R 84 — R 900
0.05 0.002
R 1200 — R 2600
0.025 0.0015
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 2 ) shall be within the following limits :
r2 min =
0.5 t
0.5 mm (0.02 in)
r2 max = r2 min +
where t = basic wall thickness.
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ORDINARY RECTANGULAR WAVEGUIDES — TYPE R (continued)
Item
Clause No.
2.1.2.5 Rectangularity of cross-section
The dimensional requirements in Sub-clauses 2.1.2.1 and 2.1.2.4 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
minimum internal (external) rectangles. A suitable method for checking rectangu-
and
larity is given below by way of example.
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 must be taken to keep it
accurately normal to the waveguide axis.
For the dimensions of the block, the following applies :
basic waveguide aperture size minus 1.1
a) basic dimensions of cross-
section times the deviation.
+
b) deviation on basic dimensions 0, — 0.1 times deviation on waveguide
aperture.
of cross-section
-4 radians.
c) perpendicularity of the sides within 3 X 10
0.2 times internal width of the waveguide.
d) length
For outside cross-section
B)
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 ape rture, the following applies :
basic dimensions of cross- basic waveguide outside cross-section plus
a)
1.1 times the deviation.
section
— 0, + 0.1 times deviation on waveguide
b) deviation on basic dimensions
of inside cross-section outside cross-section.
c) perpendicularity of the sides not deviating by more than 3 X 10-4
radians.
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ORDINARY RECTANGULAR WAVEGUIDES — TYPE R (continued)
Clause No. Item
2.2 Other mechanical requirements
2.2.1 Bow
Bow is defined a
...
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