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Model ideal frequency-independent dividers (combiners) with S-parameters

  • Library:
  • RF Blockset / Circuit Envelope / Junctions


The Divider block models power dividers (combiners) in a circuit envelope environment as an ideal s-parameter model.


expand all

Divider type, specified as:

  • T power divider

    The s-parameter matrix for T-power divider is :



    • s11 = (z23 –z1) / (z23 + z1)

    • s22 = (z13 –z2) / (z13 + z2)

    • s33 = (z12 –z3) / (z12 + z3)

    • s21 = (1+ s11) * sqrt(z1 / z2)

    • s31 = (1+ s11) * sqrt(z1 / z3)

    • s32 = (1+ s22) * sqrt(z2 / z3)

    • z12 = z1 * z2 / (z1 + z2)

    • z13 = z1 * z3 / (z1 + z3)

    • z23 = z2 * z3 / (z2 + z3)

    • z1 = Z0(1), z2 = Z0(2), z3 = Z0(3)

    • Reference Impedances: Z0 = [z1, z2, z3 ]

  • Resistive power divider

    The s-parameter matrix for Resistive power divider is :


    When you select this option, the following parameter is available:

  • Wilkinson power divider

    The s-parameter matrix for Wilkinson power divider is:



    For DC carrier (0 Hz) frequency, Wilkinson power divider is a zero matrix.

Reference impedance of divider, specified as a positive scalar or three-tuple vector.

Select this parameter to ground and hide the negative terminals. To expose the negative terminals, clear the parameter. By exposing these terminals, you can connect them to other parts of your model.

By default, this option is selected.

Introduced in R2014a

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