射频同轴连接器射频电缆组件工程设计资料.doc
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1、同轴传输线、同轴连接器、射频电缆组件工程设计参考资料中国电子科技集团公司第四十研究所 马乃祉D:外导体内径d:内导体外径r:介质相对介电常数r:介质相对导磁系数图1表1 常用介质材料的电性能参数25、标准大气压介质材料常用标记介电强度(伏/密耳)相对介电常数r(103Hz)正切损耗角tg(100MHZ)空气air8010聚乙烯PE4802.3510-3交联聚乙烯IMP7002.3510-3聚四氟乙烯TFE4802.05110-4氟化乙烯丙烯FEP5002.05210-4聚酰亚胺(改性)PI5603.42210-3聚丙烯(共聚)5006602.252.30510-4聚苯乙烯POLY5002.55
2、510-4苯乙烯聚苯撑氧MPPO5002.7310-3聚苯撑硫/聚苯撑氧PPS/PPO6003.3310-3改性聚苯醚5002.64310-31、特性阻抗,Z0殴姆准确计算:2、单位长度电容C、电感LpF/英呎H/英呎 1英呎=0.3048米3、理论截止频率 fcGHZc:截止波长C0:真空中的光速,准确值为2997924581.2米/秒准确计算:表2 同轴传输线截止频率与相近连接器对照表(50)公称尺寸同轴传输线外导体内径Dmm截止频率GHZ相近的通用连接器连接器使用上限频率 (GHZ)r=1r=1.5r=2r=2.05168.487.306.586.527/1661211.319.748.
3、788.69UHF41112.3410.759.579.49HN61013.5711.6810.5310.44SC11816.9714.61213.1613.04BNC4719.3916.6915.0414.9NAPC-7186.520.8918.2016.2016.06TNC11622.6219.4817.5517.40ATNC18527.1523.3721.0620.88433.9429.2226.3226.10SMABMA26.53.538.7833.3930.0829.82APC-3.533345.2538.9635.134.79SSMA352.9246.4940.0336.0635.
4、752.9、SMKK402.456.5648.7043.8843.492.450267.8858.4452.6552.161.8573.3863.1856.9256.421.85V651135.76116.89105.31104.381.0M110D/d2.3012.7753.24953.294、传播速率 VP5、延时 Tnsns/英吋6、驻波参数反射系数 Reflection Coefficient 反射损耗 Return Loss (dB) 电压驻波比 VSWRROS 表3 VSWR、Loss换算表VSWRLossdBVSWRLossdB17.39100.891311.08500.0282
5、318.72420.794321.05150.0251325.84800.707931.04580.0224334.41940.631041.04070.0200343.56980.562351.03620.0178353.00950.501261.03220.0158362.61460.446771.02870.0141372.32290.398181.02550.0126382.09990.354891.02270.0112391.92500.3162101.02020.0100401.78490.2818111.01800.0089411.67090.2512121.01600.0079
6、421.57690.2239131.01430.0071431.49850.1995141.01270.0063441.43260.1778151.01130.0056451.37670.1585161.01010.0050461.32900.1413171.00900.0045471.28800.1259181.00800.0040481.25280.1122191.00710.0035491.22220.1000201.00630.0032501.19570.0891211.00570.0028511.17260.0794221.00500.0025521.15240.0708231.00
7、450.0022531.13470.0631241.00400.0020541.11920.0562251.00360.0018551.10550.0501261.00320.0016561.09350.0447271.00280.0014571.08290.0398281.00250.0013581.07360.0355291.00220.0011591.06530.0316301.00200.0010607、电流的趋肤深度 m电阻率: cm-1电导率: cm波 长: cm表4 局部金属的电导率金属电导率渗透深度(100MHZ)银6.2710563铜5.810566金4.110572铝3.4
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