Transcription of Microwave and RF Cable Assemblies: The Neglected System ...
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Microwave and RF Cable Assemblies: The Neglected System ...
Cable PerformanceMicrowave and RF CableAssemblies: The NeglectedSystem ComponentPart 2: Operational Considerations of the Coaxial AssemblyBy David SlackTimes MicrowaveWe ve discussed some of the typi-cal electrical characteristics of acable assembly, and some of theenvironments typically aspects affecting the optimumdesign of a coaxial Cable assembly arecovered handlingPower handling of an RF ormicrowave assembly can be separatedinto two distinct classifications: averagepower and peak power. Many RF andmicrowave Cable assemblies can handlepower levels of several kilowatts whenthe duty cycle is very low. This wouldtypically be encountered in RADAR applications where a pulsed transmitteris used. It can be assumed, if the duty cycle islow enough, that the average power effects canbe effectively ignored. When this is true thenthe failure modes are arcover due to voltagebreakdown and corona formation is caused when the electricfields present within the Cable assembly ionizeoxygen that is trapped in microvoids within theassembly.
Cable Performance 64 Applied Microwave & Wireless components, the assembly will undergo a temperature increase. The point where the centerconductor tempera-
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