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When we can say that a waveguide is perfectly matched?

  1. Feb 21, 2015 #1
    please explain somebody what it means I am totally confused.
     
  2. jcsd
  3. Feb 23, 2015 #2

    davenn

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    Gold Member

    Hi there
    welcome to PF :smile:

    its perfectly matched where there is no reflected power from the interface of whatever the waveguide is terminating into
    this goes for any transmission line
    of course a perfect match would be near impossible to obtain and we would always have to put up with some reflected signal
    which is why in RF transmission lines, coax or waveguides, we use circulators to terminate reflected power into a dummy load, rather than letting it go back into the transmitter where it will produce all sorts of nasty intermodulation products

    if you need a better explanation than that, then maybe ask a more specific question :wink:

    cheers
    Dave
     
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