【英文标准名称】:Measuringmethodforthelevelofintermodulationproductsgeneratedinagyromagneticdevice
【原文标准名称】:旋磁器件产生的调制分量电平测量方法
【标准号】:IEC61843-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-05
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC51
【标准类型】:()
【标准水平】:()
【中文主题词】:组件;测量技术;电气工程;性能;电气器具;频率;信号;频带;射频;互相调制;调频器;无线电发射机;信号电平;水准仪;铁酸盐;电磁元件;调频;频率级;卫星通信;频率测量;移动无线电通信系统;元部件;发射机;信号干扰比;水平发送器;回转磁的;频率范围;信号频率;通信系统
【英文主题词】:Bandoffrequencies;Communicationsystems;Components;Electricappliances;Electricalengineering;Ferrites;Frequencies;Frequencylevel;Frequencymeasurement;Frequencymodulation;Frequencymodulators;Frequencyranges;Gyromagnetic;Intermodulation;Levelsender;Levels;Magneticcomponents;Measuringtechniques;Mobileradiosystems;Performance;Radiotransmitters;Radiofrequencies;Satellitecommunications;Signalfrequency;Signallevel;Signals;Signal-to-interferenceratio;Transmitters
【摘要】:ThisInternationalStandarddescribesthemeasuringmethodforthelevelofintermodulationproductsgeneratedinagyromagneticdevice.Whentwoormoresignalsofdifferentfrequenciesenterintoadeviceand/orequipmenthavingnon-linearcharacteristics(contactpoint,flexiblewaveguide,ferritedevice,etc.),harmonicsaregeneratedinthatdeviceand/orequipment.Moreover,differentialoraddedfrequenciesoccurinthedeviceduetomixingofharmonicsoraharmonicandthefundamentalfrequency.Theseresultantfrequenciescreatenoisecausinginterference.Intransmitter/receiverduplexingsystemsandradiorelaysystems,manyfrequenciesareallocatedtoaspecifiedbandsothatcombinationsoftransmittingfrequenciesandharmonicsmayfallonthereceivingband.Thiscausesdeteriorationofcommunicationqualityduetointermodulation.Sincetheintermodulationinterferencescannotbepreventedbyfiltering,itisimportanttoevaluatetheintermodulationproductslevelofthedevicetobeemployedinsuchasystem.
【中国标准分类号】:L19
【国际标准分类号】:29_100_10
【页数】:13P.;A4
【正文语种】:英语