Varactor IMD specs

Discussion in 'Wireless & RF Design' started by KL7AJ, Feb 7, 2018.

  1. KL7AJ

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    Nov 4, 2008
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    Greetings RF gurus:

    I am going to be developing some tuned antennas for ELF/VLF operation, hopefully using Varactor diodes for tuning. These applications require EXTREMELY good linearity. I have not been able to find, however, any IMD specs for any available varactors. I know they use them in some low IMD applications (which is actually amazing, since you are basically sticking a DIODE across an antenna, which is usually very non-linear). However, I've never been able to find a spec sheet on this....and before I dive too far into this, I'd like to verify the performance from "official" sources.
    Thanks immensely,
    Eric
     
  2. nsaspook

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  3. KL7AJ

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