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clanon
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Everything posted by clanon
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Two identical antennas , separated ...would ALWAYS be better than one with small ISOLATION between ports... Polarization (Lineal , Horizontal or Vertical ; Circular LH or RH) should be the SAME in Receiver and Emitter
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does it have to be MIMO...? hardware...on the Receiver side...? 500mts , anything over 10 dbi (directional) would do...
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Don't forget the pass through pins (4 of them)
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1mm FR4 22 mm to REFLECTOR (to get 50 ohms) front.dxf
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Same shit...on metal (more efficient , less losses, BETTER)
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each unit 9 db 2 of those 12 dbi max 4 of those 15 dbi max 8 of those 18 dbi max Under IDEAL conditions...(feed network. dielectric losses , mismatch etc) up to 20 ...22...24 dbi is achievable on 2.4ghz (over a 1 meter area at 24dbi)...more than that is BALONEY...Bullshit...never seen...never happen
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Well...they are UNDER -20db...so...not that bad... Z for wideband a different story I'll fiddle with x1 and x2...
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i'll try...
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Sidelobes...? Z seems RIGHT ON point...(for me)
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Slot feed could give some more Mhz...maybe...Designed for GAIN mostly...imho
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so far... best results
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i
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VSWR still a little high...2:1 in 802.11 band... 19 plus dbi , some horizontal sidelobes... reactivity close to zero...
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Those aren't Pyramids ...those are BOW TIEs FOLDED! imho
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https://save.com.ua/catalog/3g-i-4g-oborudovanie/antenny/magnita-1
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I KNEW IT! ...i was expecting you could fiddle with the distances ...there...(working on a 18dbi 24 dipoles right now)
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Jomy should try to OPTIMIZE it...
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I 've come to LEARN! (the hard way) it would NEVER have a Symmetrical lobe of Radiation... Because it's feed from an A-Symmetrical SIDE... But it does get to 16dbi and closer to 85% Efficiency using NELTEC or Teflon of good quality...(0.7 mm or less thickness).
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4by4.cst
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do you want the .CST...? (easier to do )
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Forget to say SLOT FEED PATCHES 1mm Fr4 5 mm to reflector Pinned quarter stub to gnd (reflector)...? PS: NEEDs some fine tunning...yet... Gain could be smaller and VSWR wider under 2:1...
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75ohms/50ohms= 1.5 VSWR + 200ohms/50ohms= 4 VSWR...