+ Post New Thread
Results 1 to 3 of 3
  1. #1
    Full Member level 6
    Points: 4,227, Level: 15

    Join Date
    Jul 2006
    Location
    USA
    Posts
    395
    Helped
    7 / 7
    Points
    4,227
    Level
    15

    transformer S11 simulation

    I am building the transformer by using two inductors coupled with each other. Each inductor is a squred shape matal, and the two indcutors interweaving with each other.


    In ADS simulation, the input port is 50 ohms. From SP simulation, I get S11. But I dont know which factor influences the input impedance of the transformer. Does anyone know? Thank you.

    •   AltAdvertisement

        
       

  2. #2
    Super Moderator
    Points: 51,966, Level: 55

    Join Date
    Apr 2011
    Location
    Minneapolis, Minnesota, USA
    Posts
    12,746
    Helped
    2539 / 2539
    Points
    51,966
    Level
    55

    Re: transformer S11 simulation

    There are:
    a) ohmic (or DC) resistance of the wire
    b) reactive impedance resulting from Henry value and frequency
    c) load on the secondary winding influences flux building and collapsing, which influences Ampere level, which is related to impedance.

    The above list is not complete, of course. Transformers are complicated animals.


    1 members found this post helpful.

    •   AltAdvertisement

        
       

  3. #3
    Advanced Member level 5
    Points: 29,511, Level: 41
    BigBoss's Avatar
    Join Date
    Nov 2001
    Location
    Turkey
    Posts
    4,289
    Helped
    1298 / 1298
    Points
    29,511
    Level
    41

    Re: transformer S11 simulation

    Quote Originally Posted by shanmei View Post
    I am building the transformer by using two inductors coupled with each other. Each inductor is a squred shape matal, and the two indcutors interweaving with each other.
    In ADS simulation, the input port is 50 ohms. From SP simulation, I get S11. But I dont know which factor influences the input impedance of the transformer. Does anyone know? Thank you.
    Imagine an equivalent circuit of a standard transformer .. Not necessarily RF one, just a standard transformer.
    Which intrinsic and extrinsic elements define the Input Impedance ??
    -Primary Inductance
    -Secondary Inductance
    -Coupling factor ( evidently Mutual Inductance )
    -Lossy Elements ( internal resistances,core losses,substrate losses etc.)
    -And Load..


    1 members found this post helpful.

--[[ ]]--