The brand-new PN400 Phase Noise Test System is available for purchase! →

Which Directional Coupler do you use?

Forums › General Discussions › Which Directional Coupler do you use?

Viewing 3 posts - 1 through 3 (of 3 total)
  • Author
    Posts
  • December 4, 2014 at 6:20 pm #10457
    Phil
    Participant

    Not a burning question, but it’s a rainy day and I am curious. I started out with the Mini-Circuits ZFDC-10-5-S+, but was not totally happy with the performance re: directivity and reflections and of course frequency limited. Moved to a scavenged KMW KCDSR30-31 bidirectional coupler and was quite pleased with the improvement. So what do you use and are you happy with it?

    February 13, 2015 at 5:31 am #22902
    phil42650
    Participant

    I have been using the ZFDC-20-5+ by MiniCircuits for several years. It is good from 100kHz to 2 GHz. Attached are some VNA plots I took. Works great with the tracking GEN. Above this freq I use Narda transmission line couplers. They are a little bit more expensive.

    Attachments:
    You must be logged in to view attached files.
    March 26, 2015 at 12:44 am #30650
    hendorog
    Participant

    Hi Phil,
    If you have time, could you advise the spec of your KCDSR30-31?
    I can’t find any info about it on the net unfortunately.

    Thanks,
    Roger

  • Author
    Posts
Viewing 3 posts - 1 through 3 (of 3 total)
  • You must be logged in to reply to this topic.