1、BRITISH STANDARD BS9220 N002:1971 Detail specification for medium flat rectangular(4:1) rigid waveguide tubing Standard wall thickness Generalapplication category UDC 621.372.822BS9220N002:1971 BSI 03-2000 ISBN 0 580 06571 5 A British Standard does not purport to include all the necessary provisions
2、 of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to6 and a back c
3、over. 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 CommentsBS9220N002:1971 BSI 03-2000 i Contents Page 1 Ratings (including limi
4、ting conditions 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 Dimensions for medium flat rectangular waveguides 5 Table 2 Surface roughness in micrometres and micro-inches 6 Table 3 Weight data for medium
5、 flat rectangular waveguideType M 6ii blankBS9220N002:1971 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 principle4:1. For some types of waveguides g
6、iven in this specification this ratio 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 heights are in principle 1/1000 of the internal width. 1.3 Theoretical attenuation. The value
7、s given in the tables are based on a figure for the resistivity of copper equivalent to1.7241 10 8 7 m and apply to a frequency equal to1.5f c . For the general case attenuation is given by the following formula: in which =resistivity of inside non-magnetic wall metal, o =resistivity of copper=1.724
8、1 10 8 7 m, a=inside width in millimetres, b =inside height in millimetres, f c =cut off frequency for H ol(TE ol ) mode=GHz, f=frequency at which the attenuation is to be calculated. ELECTRONIC PART OF ASSESSED QUALITY: DETAIL SPECIFICATION MEDIUM FLAT RECTANGULAR WAVEGUIDE(4:1) STANDARD WALLTHICKN
9、ESS GENERAL APPLICATION CATEGORY M22 TO M100 MATERIALS: CLASSES1 TO4 149.9 a -BS9220N002:1971 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
10、waveguide 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-conduc
11、tor devices. 4 Ordering information Orders for waveguides conforming to the requirements of 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 BS9220:1971). 3
12、) Piece length. 5 Certified test records 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
13、 of material shall be one tube,1m(3ft3in) long, selected at random for each of the approval ranges of sizes listed below: Ranges of sizes Range1. M22 to M45 Range2. M48 to M100 Classes of materials Class1. Aluminium or aluminium alloys containing not less than95% aluminium. Class2. Copper zinc alloy
14、s containing between1% and35% zinc. Material Code letter Resistivity 7 m ( 10 8 ) Factor Aluminium to BS1471T1C Aluminium alloy to BS1471 HT4 Aluminium alloy to BS1471 HT6 Aluminium alloy to BS1471 HT9 Aluminium alloy to BS1471 HT15 Aluminium alloy to BS1471 HT20 Aluminium alloy to BS1471 HT30 A B C
15、 D E F G 2.83.0 4.64.9 6.46.5 3.33.5 4.85.0 4.04.3 3.43.8 1.2751.320 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 BS2871 C101 or C102 Copper to BS2871 C103 Copper to BS2871 C106 Copper to BS3839 Silver(92.5% silver 7.5% coppe
16、r) 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 1.015 1.213 1.015 BS9220N002:1971 BSI 03-2000 3 Class3. Copper with not more than1% of othe
17、r materials. Class4. Silver or silver copper alloys containing more than87% silver. 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 Sub
18、group A0 Visual inspection Dimensions 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 the waveguide length At each end of the waveguide length As in 1.2.2 of BS9220 As in Table 1 As in Table 1 Confirm that correct material from
19、 those listed under Classes1 to4 in 1.1.6.2 (4) of BS9220 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
20、length Accumulated twist per stock length 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 As in Table 2 Subgroup A5 CTR information Attributes information for subgroupA
21、2 GROUPS B AND C No tests requiredBS9220N002:1971 4 BSI 03-2000 Inspection requirements Inspection BS9220:1971 reference and conditions of test Requirements Group D (To be applied on a sampling basis at three-yearly intervals) Subgroups D2, D3, D4 and D5 are not applicable Subgroup D1 Visual inspect
22、ion 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 stock length Any300mm(1ft) run of stock length Accumulated twist per stock length (Including corner radii) at ea
23、ch end of waveguide length and at intermediate points along the length At each end of waveguide length and at intermediate points along the length At each end of waveguide length and at intermediate points along the length Destructive tests As in 1.2.2 of BS9220 Edgewise bow:0.25mm(0.01in) Flatwise
24、bow:0.05mm(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 As in Table 2 Confirm that correct material from those listed under Classes1 to4 in1.1.6.2 (4) of BS9220 has been used Subgroup D6 CTR information Measurements information for all Group D tests a
25、 Measurements from Group A tests may be used.BS 9220 N002:1971 BSI 03-2000 5 Table 1 Dimensions for medium flat rectangular waveguides Type designation Frequency range for dominant mode a Inside cross section Outside cross section Eccentricity Nominal width a Nominal height b Deviation on width and
26、height Maximum radius of corner r 1 Nominal wall thickness t a Nominal width a 1 Nominal height b 1 Deviation on width and height Radius of corner r 2 Theoretical attenuation at1.5f cfor copper a Peak power rating a Preferred stock length From To Minimum Maximum GHz GHz mm mm mm mm mm mm mm mm mm mm
27、 mm dB/m MW mm 50 Dimensions in millimetres M14 M22 M26 M32 M40 M45 M48 M58 M70 M100 1.14 1.72 2.17 2.60 3.22 3.70 3.94 4.64 5.38 8.20 1.73 2.61 3.30 3.95 4.90 5.61 5.99 7.05 8.17 12.50 165.10 109.22 86.360 72.140 58.170 50.800 47.550 40.390 34.850 22.860 41.28 27.30 21.600 18.000 14.500 16.942 11.9
28、00 10.100 8.700 5.000 0.20 0.11 0.086 0.072 0.058 0.064 0.048 0.040 0.035 0.023 1.2 1.2 1.2 1.2 1.2 0.8 0.8 0.8 0.8 0.8 2.030 2.030 2.030 2.030 1.625 1.58 1.625 1.625 1.625 1.270 169.16 113.28 90.42 76.20 61.42 53.96 50.800 43.640 38.100 25.400 45.35 31.36 25.66 22.06 17.75 20.10 15.150 13.350 11.95
29、0 7.540 0.25 0.22 0.17 0.14 0.12 0.15 0.095 0.081 0.070 0.046 1.0 1.0 1.0 1.0 0.8 0.8 0.8 0.8 0.8 0.65 1.5 1.5 1.5 1.5 1.3 1.3 1.3 1.3 1.3 1.15 0.20 0.15 0.15 0.13 0.13 0.10 0.10 0.10 0.076 0.064 0.009 0.0164 0.0233 0.0306 0.0422 0.0430 0.0559 0.0728 0.0854 0.1931 6.75 2.95 1.90 1.28 0.80 0.83 0.56
30、0.40 0.30 0.11 4270 4270 4270 3660 3660 3050 3050 3050 3050 3050 Dimensions in inches in in in in in in in in in in in in 2 M14 M22 M26 M32 M40 M45 M48 M58 M70 M100 1.14 1.72 2.17 2.60 3.22 3.70 3.94 4.64 5.38 8.20 1.73 2.61 3.30 3.95 4.90 5.61 5.99 7.05 8.17 12.50 6.500 4.3000 3.4000 2.8400 2.2900
31、2.0000 1.8720 1.5900 1.3720 0.9000 1.625 1.0748 0.8504 0.7087 0.5709 0.6670 0.4685 0.3976 0.3425 0.1969 0.008 0.0043 0.0034 0.0028 0.0023 0.0025 0.0019 0.0016 0.0014 0.0009 0.05 0.05 0.05 0.05 0.05 0.03 0.03 0.03 0.03 0.03 0.080 0.080 0.080 0.080 0.064 0.062 0.064 0.064 0.064 0.050 6.660 4.4600 3.56
32、00 3.0000 2.4180 2.124 2.0000 1.7180 1.5000 1.0000 1.785 1.2350 1.0100 0.8690 0.6990 0.791 0.5970 0.5260 0.4710 0.2970 0.010 0.0086 0.0068 0.0057 0.0046 0.006 0.0037 0.0032 0.0027 0.0018 0.04 0.04 0.04 0.04 0.03 0.03 0.03 0.03 0.03 0.025 0.06 0.06 0.06 0.06 0.05 0.05 0.05 0.05 0.05 0.045 0.008 0.006
33、 0.006 0.005 0.005 0.004 0.004 0.004 0.003 0.0025 0.009 0.0164 0.0233 0.0306 0.0422 0.0430 0.0559 0.0728 0.0854 0.1931 6.75 2.95 1.90 1.28 0.80 0.83 0.56 0.40 0.30 0.11 168 168 168 144 144 120 120 120 120 120 a Non-mandatory.BS9220N002:1971 6 BSI 03-2000 Table 2 Surface roughness in micrometres and
34、micro-inches Table 3 Weight data for medium flat rectangular waveguideType M Type designation Material Class1 Class2 Class3 Class4 Brass70/30 Brass 90/10 M14 M22 M26 M32 M40 M45 M48 M58 M70 M100 1.600 1.600 1.600 0.762 0.635 0.635 0.635 0.508 0.508 0.432 63 63 63 30 25 25 25 20 20 17 a a a 1.270 1.0
35、16 1.016 1.016 0.762 0.762 0.635 a a a 50 40 40 40 30 30 25 1.270 1.270 1.270 1.270 1.016 1.016 1.016 0.762 0.762 0.635 50 50 50 50 40 40 40 30 30 25 0.635 0.635 0.635 0.635 0.508 0.508 0.508 0.457 0.457 0.406 25 25 25 25 20 20 20 18 18 16 a a a a a a a a a a a a a a a a a a a a a For future conside
36、ration. Waveguide BS9220 N002 Weight akg/m Weight alb/ft Class1 Class2 Class3 Class4 Class1 Class2 Class3 Class4 Brass 70/30 Brass 90/10 Brass 70/30 Brass 90/10 M14 M22 M26 M32 M40 M45 M48 M58 M70 M100 2.55 1.59 1.26 1.06 0.68 0.617 0.565 0.485 0.420 0.212 7.48 4.87 3.88 3.26 2.08 1.89 1.73 1.48 1.2
37、9 0.66 7.75 5.04 4.00 3.36 2.18 1.96 1.80 1.48 1.34 0.68 7.93 5.14 4.07 3.42 2.20 1.99 1.83 1.56 1.36 0.69 9.11 5.90 4.70 3.97 2.54 2.30 2.09 1.80 1.56 0.80 1.71 1.07 0.847 0.713 0.458 0.415 0.38 0.326 0.283 0.143 5.02 3.28 2.60 2.19 1.40 1.27 1.16 0.998 0.870 0.444 5.20 3.39 2.69 2.26 1.46 1.32 1.2
38、1 1.03 0.900 0.456 5.32 3.45 2.79 2.30 1.48 1.34 1.23 1.05 0.915 0.463 6.12 3.97 3.16 2.67 1.71 1.55 1.41 1.21 1.05 0.537 a For information only.blankBS9220 N002:1971 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparin
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