+ Post New Thread
Results 1 to 5 of 5
  1. #1
    Newbie level 5
    Points: 268, Level: 3

    Join Date
    Jan 2016
    Posts
    10
    Helped
    0 / 0
    Points
    268
    Level
    3

    Load Pull for Differential PA?

    Dear all,

    I am a beginner.
    How to perform a load/source pull for differential PA? Do I need to use balun/transformer?

    Or a single ended configuration is sufficient to extract the optimum impedance then connect it in differential manner to get 3dB extra power?

    Please share.

    Thanks

    •   Alt9th January 2017, 14:50

      advertising

        
       

  2. #2
    Advanced Member level 5
    Points: 22,724, Level: 36

    Join Date
    Nov 2001
    Location
    Earth
    Posts
    3,117
    Helped
    946 / 946
    Points
    22,724
    Level
    36

    Re: Load Pull for Differential PA?

    No, you should use Balun.Differential Optimum Load will absolutely different than single ended.
    But later on, de-embedding of the Balun from Optimum Load Impedance will be quite hard because of phase relationships.



    •   Alt9th January 2017, 15:12

      advertising

        
       

  3. #3
    Newbie level 5
    Points: 268, Level: 3

    Join Date
    Jan 2016
    Posts
    10
    Helped
    0 / 0
    Points
    268
    Level
    3

    Re: Load Pull for Differential PA?

    I am using Cadence spectre. Do you think I can use ideal balun?

    Thanks



    •   Alt9th January 2017, 15:18

      advertising

        
       

  4. #4
    FvM
    FvM is offline
    Super Moderator
    Points: 225,007, Level: 100
    Awards:
    1st Helpful Member

    Join Date
    Jan 2008
    Location
    Bochum, Germany
    Posts
    38,709
    Helped
    11841 / 11841
    Points
    225,007
    Level
    100

    Re: Load Pull for Differential PA?

    In simulation, you won't need a balun, just a differentially connected load.



  5. #5
    Newbie level 5
    Points: 268, Level: 3

    Join Date
    Jan 2016
    Posts
    10
    Helped
    0 / 0
    Points
    268
    Level
    3

    Re: Load Pull for Differential PA?

    If you dont mind, can you show some visual of that.



+ Post New Thread
Please login
--[[ ]]--