Eventually - the Tuning Procedure for a DIY loop antenna (EP86c)

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Today it will be about the actual tuning procedure. I'm glad that so many of you are interested in this loop antenna. The principle actually has advantages for many applications, because it realizes an antenna and a high-quality filter at the same time.
First, try to make a mechanically exact ring loop. The diameter, respectively the resonance frequency, is important, but not very critical. This means that you can allow certain mechanical tolerances.
Second, adjust the length of the quarter wavelength transformer. This is really critical, little change can have a big effect!
Third, optimize the connection point of the coaxial cable by variation of the angle alpha in order to achieve the best possible reflection loss, meaning the best possible VSWR.

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0:00 Teaser - Antenna Tuning
0:17 Principle, Examples & Motivation
1:41 Accuracy in Dimensioning and Building
3:13 Planar Structure
5:00 Tuning Procedure
7:16 Insights


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