Thread: Yagi efficiency
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Old December 3rd 06, 03:30 AM posted to rec.radio.amateur.antenna
art art is offline
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First recorded activity by RadioBanter: Sep 2006
Posts: 1,188
Default Yagi efficiency

Well I obviously misunderstood the question
What I have done is to make elements resonant with possesion of
different lengths
This is not that unusual with antennas. Now 'how' you make a shorter
element resonant at the same frequency is where we part. I would make
the element resonant by the addition of nearby elements not by adding a
constant like an inductance ,so obviously I have not plotted anything
according to what you are pointing to



John Smith wrote:
art wrote:
Well now I am not sure what you want plotting if you are making the
reflector resonant
other than the design frequency of the array.
JS



Art:

No, the reflector would remain the same ~5% longer (electrically and
physically) than the de. And, the director remains physically shorter
than the de, but made resonate with the proper addition of a coil,
somewhere in its length, so as to be made resonate at the same freqs as
the de (or approx. so, since the coil will undoubtedly change some
characteristics from that of the resonate de.

Art, you are rapid losing me here. Either I am not able to see what you
are getting at, or else I suspect you of having some facts or formulas
twisted about here...

Regards,
JS