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clanon
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but it would be really nice to see how it performs on the simulations... 24dbi for 64 dipoles is NOT that good...(lots of losses apparently)
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more like 3.5dbi...
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...blockage , 180 degrees at -6db illumination...efficiency...
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Adjusted at 2.437ghz center CH 6 can't run the parabolic dish, too big...i dunno how the dish would change this results...(yet)
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What's most important to me are the 180 degrees of illumination at about -6 db of gain... helix length – 13cm, 1.5mm wire ,5 doble turns instead of 4 on original site -6dB beamwidth of around 180 deg (good for f/D ratios 0.25 (focal plane dishes) to 0.3) -6dB in beamwidth corresponds to a -10dB edge illumination (max gain) since there is an additional -4dB spreading loss to the edge at these low f/D ratios.
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Starting point this site by Graham Sharples 13 cm bifilar helix I'd never found a good feed for DEEP DISHES ( i have a 1,26 m , 0.31 m deep dish F/d 0.25 )
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always TWO PEAKS of resonance (1ghz- 2,5ghz ) NO S11 though... tubing should be better than flat plate... (i guess)
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What it SHOULD look like WITHOUT the parasitic squares patches...
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it looks like 5 ...but maybe 1 more really small close to the boom...
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yep , is called optimization...but you could do it by hand if you know your stuff (right now i'm short on RAM and cores) so the closer y draw and scale the sooner i get to optimal...(but JOMY is the most experienced) if you could use 2d or 3d drawing ...it would be easier to share
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CST is GUI intuitive...fast and efficient... (no need for code or commands)
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try to work with this... is the closest i got...didn't like it...TWO peaks of resonance very close LPDA lte.cst