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#158: Directional Coupler Basics & how to sweep SWR of an antenna | Return Loss | VSWR

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Published on Jul 5, 2014

This video describes the basic properties and specifications for directional couplers, and shows their basic operation on an oscilloscope. Typical applications are discussed, along with a practical example showing how to sweep the VSWR, or Return Loss, of an antenna using a directional coupler and a spectrum analyzer with a tracking generator. The resulting return loss measurement is compared to the SWR measured on an MFJ-259B antenna analyzer.

Datasheet for the directional coupler used in this video:
http://www.minicircuits.com/pdfs/ZFDC...

My video on the basics of Tracking Generators:
https://www.youtube.com/watch?v=bbnll...

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