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Transformer (Ideal 4-Port Transformer)

Symbol

Available in ADS

Parameters

Name

Description

Units

Default

N

Turns ratio

 

 

ZRef

Reference impedance for all ports

 

 

Range of Usage

N ≠ 0

Notes/Equations

Note

This component is obsolete for new designs. It is available only for compatibility with designs created with 2002C or earlier releases.

For new designs, use the TF transformer (Lumped-Components library).

  1. Input pins are 1 and 3; output pins are 2 and 4.
  2. The S-parameters of the component are determined as follows:
    S11 = S24 = S33 = S42 = N2 / (1 + N2)
    S14 = S23 = S32 = S41 = −N / (1 + N2)
    S12 = S21 = S34 = S43 = N / (1 + N2)
    S13 = S22 = S31 = S44 = 1 / (1 + N2)
  3. The input resistance RIN output resistance ROUT are related to N by:
  4. This is a noiseless component.
  5. Because it is an ideal transformer, the impedance transformation is the same at DC as it is at nonzero frequencies.
  6. This component passes DC.
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