Bandpass Filter

SatNOGS Hardware
1

Hi! I’m just going to share two pictures and short info about the bandpass filter that one of our members at eLab Hackerspace developed:

Here’s the info that I have currently:

  • The plot shows the spectrum from 0.1MHz to 1GHz
  • The filter is tuned for 433MHz
  • Bandwidth of 10MHz
  • No ripple
  • Insertion losses of 2dB
  • “Last minimum attenuation” of 40dB (I don’t know if this term is correct, it was translated from portuguese)

How does it work? At the moment I have no idea… this RF stuff is like black magic to me. As soon as I get more info from the author I’ll update this topic (or maybe I’ll try to get the author to come here and provide more info himself)

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2

Awesome work! Let us know when designs are available so we can replicate this and test it too!

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