Copper Clad Stub Calculation for Helix Antenna Output

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SUMMARY

The discussion focuses on the calculation of a copper clad stub, specifically an impedance adapter shaped as a rectangular triangle, for use at the output of a helix antenna. Participants clarify that while the stub is typically copper-coated for enhanced conductivity, it is not a strict requirement for effective performance. The conversation emphasizes the well-documented nature of stub matching techniques in antenna design.

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Hello. I'm looking for literature or explicit formula about calculation of copper clad stub (impedance adapter) with a shape of rectangular triangle for use at output of an helix antenna.
 
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Ravaner said:
Hello. I'm looking for literature or explicit formula about calculation of copper clad stub (impedance adapter) with a shape of rectangular triangle for use at output of an helix antenna.

What's a "rectangular triangle"? :smile:

And the stub match section doesn't need to be copper coated for some reason, does it? It only needs to be conductive, I would think.

Can you post pictures or diagrams of what you are asking about? Stub matching is a pretty well-documented technique, IMO...
 
Sorry for my poor english ... It's a triangle with a 90° angle ! Iguess copper is for having a good conductivity.
Stub.JPG
 

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