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clanon
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Everything posted by clanon
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planning on REBUILD muy FA20 WITHOUT screws to reflector...this patches work better (lower VSWR) floating and NOT grounded! "Years later I had the chance to buy an Agilent Fieldfox Network/Spectrum Analyzer for my job, I quickly measured the VSWR and the result is stunning 1.2 VSRW from channel 1 to 11, it kind of confirm the simulation results https://vswr1.wordpress.com/2011/12/03/fooling-around-with-design-of-the-antenna-fa20/
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Doing the fine tunning , now... very happy with the results , stability and Gain...! W7 showing 10 db more than linux on every Ap...(damn drivers for sure)
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15 cms long @ 30 degrees w"wings"...
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IF these are ok...is poor ISP service...also try http://Fast.com with all settings on...to compare...
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using 3mm Polystyrene foam (1.2) , and a capacitive disc to neutralize the antenna being too INDUCTIVE... Not bad for a 180 by 240 cms...
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It's "extending" the 50 ohms over the feed line...it's on the gnd ring... ?
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5.8 ghz and 2.4...?
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It looks like 4 Folded Dipoles around...?
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These guys https://www.researchgate.net/publication/283553994_High_gain_245_GHz_22_patch_array_stacked_antenna " say " ...they got 19 dbis from a 2 by 2 array...WHAT GIVES...? HighGain2.45GHz2x2PatchArrayStacked.pdf
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BULLSHIT!
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yup , never see more than 15 or 16 dbis on 4 patchs on AIR and BOX ...Thiss is on a dielectric and flat , maybe i'm missing something...it's even PUBLISHED on IEEE...https://ieeexplore.ieee.org/document/7219647/
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19 ORIGINAL.cst
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19 ORIGINAL.cst
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my "GUESS"...: BUT MAYBE I GOT WRONG THE Z ADAPTATIONS
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it looks like BULLSHIT...to me...not getting more than 10 dbis right now
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Also known as BOW TIE antenna... yesterday i saw an array of high gain...i'll try to post it....(but it was for FR and 19ghz...)
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"A radome is a structural, weatherproof enclosure that protects a microwave antenna"
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http://www.lan23.ru/wifi/ANT24_1200/ant24_1200.html JOMY... what could be wrong...? REFLECTOR DISTANCE...FR4 thickness... using 1.5 mm for FR and 7mm to reflector...
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my mistake , i call "radome" to ANY dielectric enclosure ...
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i'm pretty sure that if i ADD a plastic RADOME to it....it would go to 2.4ghz (people forget that radome lowers frequency a lot!)
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Don't know what they say ...but if you replace a CHEAP PE coax (50ohms) with a GOOD PPolyurethane or teflon coax (75ohms)...the benefits i assume would surpass z missmatch VSWR (by accident) "In electrical engineering, an impedance mismatch occurs when the input impedance of an electrical load does not match the output impedance of the signal source, resulting in signal reflection or an inefficient power transfer"
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WELL...never forget that PLASTIC ENCLOSURES are important in lowering the Fr...must be that...
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Хочу такую прошу начерти другое 75 ом,у нас в деревне не валяется пенапластироль ",,, I want this please draw another 75 ohm, in our village there is no foam plastic" 75ohms cable on a 50ohms card would give 1.5 VSWR...NOT GOOD!