1、BRITISH STANDARD BS9220N003: 1971 Detail specification forflat rectangular(8.33:1) rigid waveguide tubing Standardwall thickness General application category UDC 621.372.82BS9220N003:1971 BSI 03-2000 ISBN 0 580 06348 8 A British Standard does not purport to include all the necessary provisions of a
2、contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to5 and a back cover.
3、This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBS9220N003:1971 BSI 03-2000 i Contents Page 1 Ratings (including limiting c
4、onditions of use) and characteristics 1 2 Marking 2 3 Related documents 2 4 Ordering information 2 5 Certified test records 2 6 Test schedule 2 Table 1 Flat rectangular waveguides 4 Table 2 Surface roughness in micrometres and micro-inches 5 Table 3 Weight data for flat rectangular waveguide Type F
5、5ii blankBS9220N003:1971 BSI 03-2000 1 1 Ratings(including limiting conditions of use) and characteristics SeeTable 1. 1.1 Ratio between inside width and height. The standard ratio of inside width to inside height is in principle8.33:1. For some types of waveguides given in this specification this r
6、atio has not been observed because a different value of the ratio was already in extensive use. 1.2 Deviation on inside width and height. Deviations for the inside width and height are in principle 1/1000 of the internal width. 1.3 Theoretical attenuation. The values given in the tables are based on
7、 a figure for the resistivity of copper of1.7241 10 87m and apply to a frequency equal to1.5f c . For the general case attenuation is given by the following formulae: ELECTRONIC PARTS OF ASSESSED QUALITY: DETAIL SPECIFICATION OUTLINE DRAWING FLAT RECTANGULAR WAVEGUIDE(8.33:1) STANDARD WALL THICKNESS
8、 GENERAL APPLICATION CATEGORY F22 to F84 MATERIALS: CLASSES1 TO4 For dimensions seetables where = resistivity of inside non-magnetic wall metal, o = resistivity of copper=1.724110 87m, a = inside width in millimetres, b = inside height in millimetres, f c = cut-off frequency for H ol(TE ol ) mode=GH
9、z, f = frequency at which the attenuation is to be calculated. 149.9 a -BS9220N003:1971 2 BSI 03-2000 For other materials multiply the values quoted by the factor given in the following table: 2 Marking The marking shall be in accordance with 1.1.6 of BS9220. 3 Related documents BS9220, Rigid wavegu
10、ide tubing of assessed quality: Generic data and methods of test. BS2871, Schedule of copper and copper alloys. Tubes. BS1471, Wrought aluminium and aluminium alloys for general engineering purposes. Drawn tube. BS3839, Oxygen-free high-conductivity copper for electronic valves and semi-conductor de
11、vices. 4 Ordering information Orders for waveguides covered by this specification shall contain the following information, in accordance with the requirements of 1.1.15 of BS9220. 1) BS number of this detail specification. 2) Reference code (see1.1.6.2 of BS9220). 3) Piece length. 5 Certified test r
12、ecords The CTR, as issued at6-monthly intervals, will contain attributes information for all subgroup A2 tests. In addition, the CTR will contain measurements information for all Group D tests. 6 Test schedule The sample size for the Group D inspection of each class of material shall be one tube,1m(
13、3ft3in) long, selected at random from each of the approved ranges of sizes listed below: Ranges of sizes Range1. F22 to F40 Range2. F48 to F84 Classes of materials Class1. Aluminium or aluminium alloys containing not less than95% aluminium. Class2. Copper-zinc alloys containing between1% and35% zinc
14、. Class3. Copper with not more than1% of other materials. Class4. Silver or silver-copper alloys containing more than87% silver. Material Code letter Resistivity 7m( 10 8 ) Factor Aluminium to BS1471 T1C Aluminium alloy to BS1471 NT4 Aluminium alloy to BS1471 NT6 Aluminium alloy to BS1471 HT9 Alumin
15、ium alloy to BS1471 HT15 Aluminium alloy to BS1471 HT20 Aluminium alloy to BS1471 HT30 A B C D E F G 2.8 3.0 4.64.9 6.46.5 3.33.5 4.85.0 4.04.3 3.43.8 1.275 1.320 1.6351.685 1.9301.945 1.3801.425 1.6701.705 1.5251.580 1.4051.490 Brass to BS2871 CZ101 Brass to BS2871 CZ105 Copper to BS2871C101 or C10
16、2 Copper to BS2871 C103 Copper to BS2871 C106 Copper to BS3839 Silver(92.5%silver,7.5%copper) H J K L M N S (Annealed) 3.90 6.2 1.724 1.737 1.724 2.436 1.724 1.80 (Drawn) 4.3 7.8 1.777 1.777 1.777 2.538 1.777 (Annealed) 1.505 1.895 1.000 1.002 1.000 1.190 1.000 1.020 (Drawn) 1.580 2.130 1.015 1.015
17、1.015 1.213 1.015 BS9220N003:1971 BSI 03-2000 3 Inspection requirements Inspection BS9220:1971 reference and conditions of test Requirements GROUP A (To be applied on a sampling basis lot-by-lot) Subgroups A1, A3 and A4 are not applicable Non-destructive tests Subgroup A0 Visual inspection Dimension
18、s Eccentricity Material verification 1.2.2 1.2.3.1 1.2.3.2 1.2.5.2 100% inspection Excluding corner radii) at each end of waveguide length At each end of waveguide length As in 1.2.2 of BS9220 As in Table 1 As in Table 1 Confirm that correct material from those listed under Classes1 to4 in1.1.6.2(4)
19、 ofBS9220 has been used Subgroup A2 Dimensions Bow Twist Shape of cross section Internal finish 1.2.3.1 1.2.3.3 1.2.3.4 1.2.3.5 1.2.5.1 Inspection level S-2, AQL2.5% Corner radii only at each end Any600mm(2ft) of stock length Any300mm (1ft) run of stock length Accumulated twist per stock length (Whi
20、ch may be assessed by measurement of manufacturers tool) As in Table 1 Edgewise bow:0.25mm (0.01in) Flatwise bow:0.5mm(0.02in) May not exceed0.5 May not exceed3 As in 1.2.3.5 of BS9220 For subsequent study Subgroup A5 CTR information Attributes information for Subgroup A2 GROUP D (To be applied on a
21、 sampling basis atthree-yearly intervals) Subgroups D2, D3, D4 and D5 arenotapplicable Subgroup D1 Visual inspection a Bow a Twist a Dimensions Eccentricity Shape of cross section Internal finish a Material verification a 1.2.2 1.2.3.3 1.2.3.4 1.2.3.1 1.2.3.2 1.2.3.5 1.2.5.1 1.2.5.2 Any600mm(2ft) of
22、 stock length Any300mm(1ft) run of stock length Accumulated twist per stock length (Including corner radii) at each end of waveguide length and at intermediate points along the length At each end of the waveguide length and at intermediate points along the length At each end of the waveguide length
23、and at intermediate points along the length Destructive tests As in 1.2.2 of BS9220 Edgewise bow:0.25mm(0.01in) Flatwise bow:0.5mm(0.02in) May not exceed0.5 May not exceed3 As in Table 1 As in Table 1 As in 1.2.3.5 of BS9220 For subsequent study Confirm that correct material from those listed under
24、Classes1 to4 in 1.1.6.2(4) of BS9220 has been used Subgroup D6 CTR information Measurements information for all Group D tests a Measurements from Group A tests may be used.BS 9220 N003:1971 4 BSI 03-2000 Table 1 Flat rectangular waveguides Type designation Frequency range for dominant mode a Inside
25、cross section Outside cross section Eccentricity Theoretical attentuation aat1.5f Cfor copper Peak power rating a Preferred stock length Nominal width a Nominal height b Deviation on width and height Max. radius of corner r 1 Nominal wall thickness t a Nominal width a 1 Nominal height b 1 Deviation
26、on width and height Radius of corner r 2 From To Min. Max. GHz GHz mm mm mm mm mm mm mm mm mm mm mm dB/m MW mm 50 Dimensions in millimetres F22 F26 F32 F40 F48 F58 F70 F84 1.72 2.17 2.60 3.22 3.94 4.64 5.38 6.58 2.61 3.30 3.95 4.90 5.99 7.05 8.17 10.00 109.22 86.36 72.14 58.17 47.55 40.39 34.85 28.4
27、99 13.100 10.400 8.600 7.000 5.700 5.000 5.000 5.000 0.11 0.086 0.072 0.058 0.048 0.040 0.035 0.028 1.2 1.2 1.2 1.2 0.8 0.8 0.8 0.8 2.030 2.030 2.030 1.625 1.625 1.625 1.625 1.625 113.28 90.42 76.20 61.42 50.80 43.64 38.10 31.75 17.16 14.46 12.66 10.25 8.95 8.25 8.25 8.25 0.22 0.17 0.14 0.12 0.095 0
28、.081 0.070 0.057 1.0 1.0 1.0 0.8 0.8 0.8 0.8 0.8 1.5 1.5 1.5 1.3 1.3 1.3 1.3 1.3 0.15 0.15 0.13 0.13 0.10 0.10 0.076 0.076 0.03018 0.04393 0.05676 0.07765 0.10507 0.13066 0.1439 0.1651 1.42 0.91 0.61 0.39 0.27 0.20 0.17 0.14 4270 4270 3660 3660 3050 3050 3050 3050 Dimensions in inches in in in in in
29、 in in in in in in in 2 F22 F26 F32 F40 F48 F58 F70 F84 1.72 2.17 2.60 3.22 3.94 4.64 5.38 6.58 2.61 3.30 3.95 4.90 5.99 7.05 8.17 10.00 4.300 3.400 2.8400 2.2900 1.8720 1.5900 1.3720 1.1220 0.5157 0.4094 0.3386 0.2756 0.2244 0.1969 0.1969 0.1969 0.0043 0.0034 0.0028 0.0023 0.0019 0.0016 0.0014 0.00
30、11 0.05 0.05 0.05 0.05 0.03 0.03 0.03 0.03 0.080 0.080 0.080 0.064 0.064 0.064 0.064 0.064 4.460 3.560 3.000 2.418 2.000 1.718 1.500 1.250 0.6756 0.5694 0.4986 0.4036 0.3526 0.3249 0.3249 0.3249 0.0086 0.0068 0.0057 0.0046 0.0037 0.0031 0.0027 0.0022 0.04 0.04 0.04 0.03 0.03 0.03 0.03 0.03 0.06 0.06
31、 0.06 0.05 0.05 0.05 0.05 0.05 0.006 0.006 0.005 0.005 0.004 0.004 0.003 0.003 0.03018 0.04393 0.05676 0.07765 0.10507 0.13066 0.1439 0.1651 1.42 0.91 0.61 0.39 0.27 0.20 0.17 0.14 168 168 144 144 120 120 120 120 a Non-mandatory.BS9220N003:1971 BSI 03-2000 5 Table 2 Surface roughness in micrometres
32、and micro-inches (For subsequent study) Table 3 Weight data for flat rectangular waveguide Type F Waveguide to BS9220 N003 Weight akg/m Weight alb/ft Class 1 Class2 Class 3 Class 4 Class 1 Class2 Class 3 Class 4 Brass 70/30 Brass 90/10 Brass 70/30 Brass 90/10 F22 F26 F32 F40 F48 F58 F70 F84 1.42 1.1
33、3 0.950 0.614 0.508 0.436 0.386 0.330 4.35 3.47 2.92 1.89 1.56 1.34 1.19 1.01 4.52 3.60 3.03 1.94 1.62 1.39 1.23 1.05 4.58 3.64 3.08 1.99 1.65 1.41 1.25 1.06 5.32 4.18 3.42 2.29 2.03 1.84 1.59 1.27 0.955 0.76 0.64 0.413 0.342 0.294 0.260 0.222 2.93 2.33 1.96 1.27 1.05 0.905 0.800 0.681 3.04 2.12 2.0
34、4 1.31 1.09 0.935 0.826 0.705 3.09 2.45 2.07 1.34 1.11 0.950 0.840 0.716 3.58 2.85 2.39 1.54 1.37 1.17 1.09 0.98 a For information only.BS9220N003: 1971 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStand
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