AN216: Limitations of AM Leveling Loops

AN216: Limitations of AM Leveling Loops

GENEVA, OH, October 10, 2015

Characterizing RF power sensors is commonly done using a direct comparison system which employs a resistive RF power splitter with a power standard connected to a power meter. The microwave source is often maintained at a stable level with an external AM input. This application note discusses the limitations to this technique and some alternatives.

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