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System block diagram 0.1

A project log for Cheap satellite transponder

A low cost homebrew transponder styled after the Es'hailSat ham payload. S-band to X-Band

2ftg2FTG 05/27/2014 at 06:490 Comments

So I drew up a basic block diagram of the system in Scheme-It. It does not feature the much needed AGC to prevent strong signals overdriving it, but that will be added on later versions. I should be able to do AGC on 2.4GHz and not the IF with a NXP BGA2031 variable gain amplifier for 700-2500MHz The chatch is the SOT363 case, which is not the most fun to work with, at least it has visible pins. I added a picture of the block diagram to the project pictures. 

This is the current system design:

Links:

Large block diagram: https://i.imgur.com/QLv9HPd.png

 The VGA http://www.nxp.com/products/rf/amplifiers/variable_gain_amplifiers/BGA2031.html

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