Minkowski Biquad TV UHF antenna

[aurel 22]

Hi

Today ..as i said before , i build this simple TV UHF antenna.

It is build with thin aluminum electric wire 1.5mm dia and connected with ordinary "luster clamp".

[Admin 2561]

,,,good, and what are the results ... ??

[aurel 22]

It is late here ..so i will trying tomorrow ...

I already build one similar and give to my friend ..he says that work fine as indoor antenna.

[Admin 2561]

On what UHF channels does this antenna work?

 

[aurel 22]

standard UHF chanels 21-69  freq 470 -860 Mhz

well 15mm x 20 sides is 300mm

 

[Admin 2561]

,,,not true...!!!

[aurel 22]

he he ...

what is NOT TRUE... 15x20 ?

yes it is 300....but maybe some other aspects are not true

i don't know?

[Admin 2561]

,,,,good ,for the beginners, the diamond side must be (0,27....0,55)* lambda,for the antenna to work in desired parameters  ...!!!!!

,,,or less ...lambda/4,lambda /8,lambda/16,lambda/32....!!!

[aurel 22]

And yes it is lambda / 4

 

[Admin 2561]

,,,good, that kind of thing seems normal to you .... ???

[aurel 22]

Quote

,,,good, that kind of thing seems normal to you .... ???

I don't know ..i just follow the logic ..and most of fractal antennas are created like this.

Are you sure that CST know calculate fractals ?

[Admin 2561]

Of course...!!!
...but this antenna is not good...!!!

 

[aurel 22]

This one is little bit different type of minkowski fractal i saw it before .

anyway antenna is tested ..from 14 DVB TV chanels in my area i can pick them all.

Two of them are not stable hence weak signal or just different direction.

I must say that i pick up those TV channels without reflector...but when i add reflector then i get more stability  

as it supposed to be ...

also antenna for testing is on TV set with just 1 m of coax 75ohm cable..

so i will mount it on my roof to test antenna outdoor.

all best..

[Admin 2561]

,,,good, it's not a big deal to be stuck....!!!

[Admin 2561]

But anyway, I think antenna feeding should be done differently, as well as antenna Minkowski...!!!

[Admin 2561]

[aurel 22]

OK i have original - fabric made - asimetric element  .hence baloon

and i add it to antenna and now seems that work better.

This small mink fractal i already build for 2,4ghz and work well 

but maybe minkowski shape is not the best for biquad type

[Geraldhet 0]

I have a K40 antenna That i have used for more than 20 years. It also has a removable load and a weather cap. I ran the coax out one of my side windows kingcab.