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DBell

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Everything posted by DBell

  1. Ah, there's the rub! I want to reduce the image bandwidth by the same divide factor, not heterodyne it down. When I get the bandwidth reduced to where I want it, then I would mix it doown to IF (or baseband.) Dave
  2. Edit: Saw a dumb typo: I meant to write "I should get a down-sampled signal at 100 MHz with a 1 MHz bandwidth." Dave
  3. I have what may be an odd question for the SDR gurus out there. What would be the physical implementation (in software) of a broadband frequency divider? For example, say I want to capture a signal at, 1 GHz, with a 10 MHz bandwidth, then divide it by a factor of 10, I should get a down-sampled signal at 10 MHz with a 1 MHz bandwidth. Yes, I know I would lose information, but assume this would be presented as a spectrum analysis, not full audio, video, etc. Conceptually, could this be accomplished by sampling the RF at 2+times the highest frequency components, say at 2.5 GHz, then discarding 9 out of 10 samples - decimating the input stream? Thanks, Dave
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