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Tetrahedron Antenna Answered

Hello

I have a question about an idea I have for an antenna that always points to the sky antenna no matter how it lands; this is for a high altitude balloon. My idea was to make an antenna the shape of a tetrahedron, so that one antenna always points up.

Does  having 4 antennas diminish the signal from the transmitter at all?

Thank you

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caitlinsdad (author)2010-12-30

Not sure but you would think as a transmitting antenna, having the signals radiating from different near sources might cause interference. The same signal pointed in different directions could cancel some of the signal strength. Maybe have a single antenna inside of a rotating mount that is weighted upright.

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sdtacoma (author)caitlinsdad2010-12-30

If it is going to interfere then I might have to do something like you suggested and go with something weighted.

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Kiteman (author)sdtacoma2010-12-30

Yes - think along the lines of a hamster's exercise ball.

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sdtacoma (author)Kiteman2011-01-04

You guys seem to know what you're talking about. What do you think of the Instructable? It is what I need the antenna pointing up for.

https://www.instructables.com/id/433-MHz-UHF-lost-model-radio-beacon/

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Goodhart (author)sdtacoma2010-12-31

This link here may help with what will work and not work along this line

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lemonie (author)2010-12-31
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sdtacoma (author)lemonie2010-12-31

Yes, the weebl design (haha)! That reminds me of a punching bag I used to have as a kid... ohh, the memories.

That is along the lines of what I was thinking based on Caitlin's Dad. Should be pretty easy to accomplish.

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lemonie (author)sdtacoma2010-12-31
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looking4ideas (author)2010-12-30

Are you trying to make it so that the payload will have contact with the GPS satellites even if the payload lands sideways ? if so that will be a problem because the GPS satellite systems work in a different way than normal antennas they are usually flat antennas.

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sdtacoma (author)looking4ideas2010-12-30

The signal that it will be transmitting will be from a short range radio beacon not a GPS.

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