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clanon

Triple frequency+dual frequency LPDA SDR 0.3 to 6ghz

Started by clanon,

Posted (edited)

Still testing , Imepdance needs some work still...But looks good so far)

Copper tape under 40 cm long and wide...PES foam or PU foam dielectric

 

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Edited by clanon

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Posted

Make some modifications, distance parallelism has been CURVED to allow for a soft Impidance curve...

6-7 dbi gain from 300 Mhz to 6000 mhz

best response is between 1 ghz and 4 ghz...

looks good to me

SDR is the intended use...

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Posted

Clanon, how do you make this practical antenna, isn't it a bit complicated...???

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Posted

YES it is complicated...but the results are REALLY GOOD

The Vivaldis have NO GAIN...(THIS have 7dbi or more over the WHOLE BAND)

Thinking in cutting copper tape by hand ... after printing the dwg dxf 1:1 blueprints...

CAN NOT be made in PCB board (distance between HALFs are changing gradually from back to balun)

making it on pcb board would get you HUGE variations on Impedance over the whole band...

 

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Posted

52 minutes ago, jbckdsav said:

Vivaldi have no gain? Please.

Who told you this? xD

under 1000 mhz that is...3 4 dbi

They get gain over 1ghz 

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Posted (edited)

https://antennatestlab.com/antenna-examples/example-3-vivaldi-antennas-rfspace

this is the MOST EXPENSIVE vivaldi out there...and it SUCKS under 1000MHZ...

I was tryin to change that...did my research...Build some antennas after MONTHS of simulations...still do...

LPDA is the BEST for uwb with a DIRECTIVITY (7 dbi without reflector 12-15 with reflector) CAN't beat that

BUT it's hard to build...

Edited by clanon
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Posted (edited)

over 100 us$ FOR NOTHING...fucktards buy stuff for their LOOKS! lmaoCaptura.PNG

Edited by clanon
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Posted (edited)

Captura.PNG

Captura.PNG

Edited by clanon
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Posted

20 hours ago, clanon said:

over 100 us$ FOR NOTHING...fucktards buy stuff for their LOOKS! lmaoCaptura.PNG

Where did you get this from?

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Posted (edited)

almost NO GAIN

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Edited by clanon
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