Raytron 16dbi patch

[clanon 246]

some little thing is OFF...causing that small side lobe on the right...but the earth ground shape is TOO IMPORTANT to vswr and gain...apparently

Edited March 17, 2019 by clanon

[Admin 2545]

[clanon 246]

I wonder if there is a simillar FOOTPRINT SIZE patch with 16dbi or more... Plannar no space for big reflector wings (Haven't found it yet)

[Admin 2545]

[clanon 246]

What do you think...? Jomy...

i'm close...?

vswr and s11 ...still off (a little)

PD: Check what i did to your SMA to make it work...

Edited April 23, 2019 by clanon

[Admin 2545]

"Yes, I think it's good, but the total efficiency must be <-0.06 dBi

and how impedance is it?

and there is also a secondary lobe of radiation..!!!

[clanon 246]

Z shows arround 49ohms going up with frecuency...(the secondary lobe  and misalignment of MAIN lobe ...i'll say is the feeding line to LONG...or the distance between patches too big...don't know (patches size seems RIGHT now...i think)

" total efficiency must be <-0.06 dBi" yup ... is taking about 70% of power ...NOT ENOUGH for a 100mw card...(should be close to 90%)

 

PS: I'm using Frecuency solver (it takes a while to solve) and WAVEGUIDE PORT inside the SMA and close to patchs plane...

QUESTION...Can i SCALE parts of the whole thing , separately...? without dissasembling all pieces...(going back to boolean add)

 

Edited April 23, 2019 by clanon

[Admin 2545]

I think it's ok, but try to shorten(or increase) the length of the adjustment lines...!!!

for scaling it uses a factor k and compiles another file cst ...!!!

[clanon 246]

Jomy , could it be that i'm right with all sizes...BUT the SMA is not on 50ohms (after taking a bite of it) is a tricky shape close to the FEED Line...

i'm gonna take some more copper out of it and see what happens with the IMPEDANCE (so close to 50ohms) 49.13...

[Admin 2545]

[Admin31 0]

On 12/3/2019 at 1:58 PM, Admin said:

... something like that ... !!!

 

 

Anyway, something is wrong ...

 

 

What is the name of the software ??

[Admin 2545]

,,,cst...!!!

[clanon 246]

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).