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#1 Fallengod Jan 27, 2011 09:03 PM

Wifi Boosted AR.Drone
 
7 Attachment(s)
I posted a while about finding a RF test point on the AR drone and since then i been waiting for all my stuff to arrive.

Put a good evening of work into my AR drone and here are my results:D

http://www.rcgroups.com/forums/showa...5&d=1296183544
http://www.rcgroups.com/forums/showa...6&d=1296183622
http://www.rcgroups.com/forums/showa...8&d=1296183622
http://www.rcgroups.com/forums/showa...9&d=1296183622
http://www.rcgroups.com/forums/showa...0&d=1296183622



The before and after:


http://www.rcgroups.com/forums/showa...0&d=1296183622

http://www.rcgroups.com/forums/showa...9&d=1296183622

10dbi received Gain!

#2 HoverGracefully Feb 04, 2011 11:04 PM

How is your mod going! What is the brand name of the WiFi extender/booster! Do you have any pictures of the ardrone in flight?

#3 spudandretti Feb 05, 2011 08:10 AM

Quote:

Originally Posted by HoverGracefully (Post 17315366)
How is your mod going! What is the brand name of the WiFi extender/booster! Do you have any pictures of the ardrone in flight?

I would say this one from the pic. http://compare.ebay.com/like/3803068...=263602_304662

#4 skizziks Feb 08, 2011 12:01 AM

Fallengod Check your solder connections.....Any pointed peaks will act like an antenna............keep the wires as short as possible because a long antenna wire will also act like a delay line..........

#5 fastuning Feb 10, 2011 06:09 AM

Post a Tutorial PLEASE!

#6 GGoodrum Feb 10, 2011 10:24 AM

+1 for a tutorial/more details. :)

-- Gary

#7 Kevo500 Feb 10, 2011 09:33 PM

Quote:

Originally Posted by skizziks (Post 17344394)
Fallengod Check your solder connections.....Any pointed peaks will act like an antenna............keep the wires as short as possible because a long antenna wire will also act like a delay line..........

I agree with pointed peaks being bad and can all interference into the line . Also , unless there is a wire under that peak , it means your iron was not hot enough to allow the solder to flow properly.

But this would be the first time that I have ever heard of a "delay line".

Are you implying that a longer wire somehow changes the speed of light ??

I can see it causing a higher swr. But 'delay' .. its just not clicking for me.

Can you elaborate ??

#8 skizziks Feb 12, 2011 10:52 AM

Kev500 RF has certain characteristics when it travels through wires....RF aslo travels at one speed when it travels through wires which means there will be latency if the signal travels through a longer wire....Delay lines are used in high tech RF designs like 3G amplifiers, multi loop linear amplifiers, Feed Forward amplifiers, and multi carrier rack mount amplifiers....Simple delay lines are just a coiled RF line used to keep a multi block RF design in phaze because the signal is split and processed and when you re-group or combine the signal all of the re-grouped signals must be in phaze so that is where a delay line is used....There are also other Things to remember like RF deflection where is a group of signals off multiple antennas will need to have the same length signal wires going to a combiner or RX....If the signals do not meet at the combiner at the same time the slower signal or signals will be deflected.....RF deflection also happens when a signal wire is bent at too much of an angle....The signal will not pass through the angle ...It will just deflect .....Think of the signal wire as a water hose with a kink that stops the water.....It took me over 15 years to learn about RF and I was the assistant of many RF design engineers over the years and helped them with their design of many RF devices.....I have installed many high end WI-FI networks where the signal would have to span over 10 miles with the aid of amplifiers and fancy antennas....


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