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Divider

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

Library

Junctions

Description

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

Dialog Box and Parameters

Main Tab

Select component
  • T power divider

    The default option is T power divider. The s-parameter matrix for T-power divider is :

    where:

    • 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 ]

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

    • Reference impedance (Ohm)

      Specify the reference impedances of T power divider as scalar or three-tuple. The default values are 50.

  • Resistive power divider

    The s-parameter matrix for Resistive power divider is :

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

    • Reference impedance (Ohm)

      Specify the reference impedances of Resistive power divider as scalar or three-tuple. The default values are 50.

  • Wilkinson power divider

    The s-parameter matrix for Wilkinson power divider is:

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

    • Reference impedance (Ohm)

      Specify the reference impedances of Wilkinson power divideras scalar or three-tuple. The default values are 50.

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

Ground and hide negative terminals

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

By default, this option is selected.

Examples

The example, Wireless Digital Video Broadcasting with RF Beamforming, uses ideal dividers as combiners in the Receive Antenna Array. This removes the need for Phase/Frequency offset compensation in the Baseband Processing Receive

See Also

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