Does this RF switch Bi-Directonal?

Discussion in 'Electronics Resources' started by EngIntoHW, Apr 15, 2012.

  1. EngIntoHW

    Thread Starter Member

    Apr 24, 2010
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    0
    I'm trying to figure out whether this RF switch is Bi-Directonal, i.e. whether it transfers RF signal from selected input to output AND from output to selected input.

    P/N: CCRT-33S3O
    Description: Commercial DC-18GHz SMA Failsafe Terminated SPDT
    Datasheet: http://www.teledynerelays.com/pdf/co.../CCRT-33FS.pdf

    Can you tell whether it's bi-directional or not?

    Thank you very much.
     
    Last edited: Apr 15, 2012
  2. Papabravo

    Expert

    Feb 24, 2006
    10,148
    1,791
    Your link is broken. I'll bet it is bi-directional. I don't know how you would make one that wasn't.
     
  3. EngIntoHW

    Thread Starter Member

    Apr 24, 2010
    128
    0
    Hi
    Here is the fixed link of - CCRT-33S3O - please notice that the N.O. and N.C. ports are terminated with 50Ω resistors.
    (Datasheet: http://www.teledynerelays.com/pdf/co.../CCRT-33FS.pdf )

    [​IMG]


    I have one additional question please, which I did not quite understand from datasheet.


    For some reason, they gave the Power handling of the Not-Terminated RF Switch:
    [​IMG]


    Does it mean that in the DC-3GHz range, each of the IN, N.C. and N.O. ports can handle 80W?



    Thank you again!

     
  4. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    I'm not an RF engineer, but I AM an old engineer.
    My interpretation is that only the unselected port is terminated. This would mean that, in the mode it was designed for, the termination would not have to dissipate any power. However, ifyou are using it as a multiplexer, then you will be applying power to the termination of the port that is unselected. Those terminations are spec'ed to handle 2W max. If I am right, the 80W@3GHz is only good in the forward direction.
     
    EngIntoHW likes this.
  5. EngIntoHW

    Thread Starter Member

    Apr 24, 2010
    128
    0
    Hi Ron,

    Thank you so much :)
     
  6. Ron H

    AAC Fanatic!

    Apr 14, 2005
    7,050
    657
    You're welcome.:)
     
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