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clanon

4 by 4 FR4

Originally designed for 5.8 (with HIGH LOSSES and low gain)

Inverse engineered to 2,4 ghz wjith High GAIN and Better Efficiency s on FR4

 

wifi-1024x768 (2).jpg

...modelling right now...almost there...Close to 20dbi 

Edited by clanon

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,,, okay, success at work...!!!!

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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...

 

4by4_01.gif

s11.JPG

vswr.JPG

Edited by clanon

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Clanon, you can give some dimensions to this antenna...???

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1 hour ago, clanon said:

do you want the .CST...? (easier to do )

,,okay...!!!

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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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,,, such a thing is not correct .. !!!

screenshot_1883.jpg

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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...

z.JPG

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,,, to get rid of the lateral sidelobes, you need to reduce the distance x2...!!!

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Sidelobes and narrow band...!!!

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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...

 

lobes.JPG

Edited by clanon

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JOMY...! HOW do i LOWER the VSWR...

antenna is GREAT but too INDUCTIVE REACTIVE...

 

too NARROW BAND...

distance to reflector change NO GOOD

distance to feed network NO GOOD

 

 

z.JPG

vswr.JPG

s11.JPG

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