How to make a fractal antenna for HDTV / DTV plus more on the cheap

 by williamruckman
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Step 7: Mount dipoles and mount transformer

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Place and screw down each of your fractals to the corner screws.

Attach the impedance matching transformer across the two center screws and tighten them down.

BUILD COMPLETE! Test and enjoy!
 
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econtrerasd says: May 9, 2010. 11:10 AM
Would it work if you etched the design on a cooper board?, That way you could create a complex fractal easily.
RustBelt in reply to econtrerasdDec 26, 2010. 9:39 PM
WHAT IS A "cooper board"? Do you mean a Printed Circuit board? Yeah, that should werk.
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There is probably a way to print it with conductive ink... then you could glue it onto about any (insulating) material you have handy, connect the terminals to a tranformer or a cable connector and plug it in! ,
If it gets damaged or worn print out a replacement!  Even print several copies and build an array.
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Tin foil or a matel screen (strainer, etc.) makes an excellent reflector. Suggest you experiment with tin foil, scissors and scotch tape.
jsilverman1 in reply to RustBeltSep 18, 2011. 11:32 AM
I'm sure "cooper" is a typo for "copper"
George3573 says: Nov 29, 2010. 3:19 AM
I am truly pleased with the design. Would you think that there would be much of a modification needed so as to be able to build one for a Wifi for computer Use?
Do you think that you might consider this Idea for the future?
Thank You. Nice project.
jimvandamme in reply to George3573Jun 7, 2011. 10:57 AM
WiFi is narrow band (2.45 GHz), unlike TV. The fractal elements make an antenna wideband. You're better off making a narrowband, directional antenna to reject unwanted signals and get the gain you need towards the modem. Plenty of soup can antenna designs around.
jschwab says: Mar 13, 2011. 11:17 AM
This antenna works great. Also, you can mount this to a circuit board, or just some cardboard and place it inside of the project box for a cleaner concealed look.

This works as good or better than the $50 clearstream micron i purchased from best buy.

I am also interested in more iterations on the fractal design, but i cant imagine id be able to tell the difference as i already get 50+ channels with this. if only 40 of them werent in foreign languages. :)
laborracha says: Mar 18, 2010. 10:35 PM
 not criticizing the design, just the use of the word fractal.
laborracha says: Mar 18, 2010. 10:34 PM
http://www.sciencprog.com/wp-content/uploads/2007i/fractal/koch_figure.png
Koch_figure.PNG
laborracha says: Nov 6, 2009. 6:55 PM
Not to nitpick, but I'm not sure those are technically fractals without one more level of self similar repeating scale. Without that next level you may not get the benefit of fractal antennas, which is the ability to pick up different frequencies. 
williamruckman (author) in reply to laborrachaFeb 23, 2010. 10:27 AM
Yes, it would be best to go one more iteration. This is the first and initial build. I found that it worked great, so I shared it for everyone else to experiment with as well. But anymore iterations than one more, then you don't see too much more gain.
jsmithblue in reply to williamruckmanMar 18, 2010. 7:59 PM
 I am new to this, but what would more iteration look like? Is there a pic anywhere online i could reference?

KC0GRN says: Jan 3, 2009. 4:54 PM
Interesting Antenna design, I'm going to have to experiment with it to see if I can create one that will maximise my tv reception. Thanks for the idea!!!
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