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Prototype SWR meter for 2.45Ghz

Testing antenna's is a lot easier if you have a good SWR meter. This is a prototype of a design by G7EYT.

Written by: G4RFR ( FRARS ) Thursday, 17 January 2002

Click for full size image
The SWR meter is a useful tool when building and testing antenna systems. Without one, the antenna may be a very bad match to 50 ohms, and little signal may be being radiated. This design is optimised for the 2.4Ghz band used by wireless lans.

This SWR meter is a prototype of a design I will fully publish here on the FRARS website, once I have ironed out any problems.

As can be seen in the picture, The central strip line is used to carry RF between RF input and output connectors. Either side of this line are the forward and reverse coupling lines, along with their detector diodes and 47 ohm loads.

The debugged version of this will appear on this site shortly.


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