Equivalent Circuit Representations of Impedance and Admitance

Equivalent Circuit Representations of Impedance and Admitance

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This book chapter presents the following: the concept of waveguide input impedance (and admittance); impedance-admittance relationships of a waveguide to those of simple series and parallel circuits which present equivalent impedance (or admittance) at a given frequency; series-circuit representations of impedance and equivalent parallel-circuit representations of admittance on conventional Smith chart coordinates; parallel-circuit representations of impedance and series circuit representations of admittance on an alternate form of the Smith chart; Smith chart overlay for converting a series-circuit impedance to an equivalent parallel-circuit impedance, and a parallel circuit admittance to an equivalent series-circuit admittance; impedance or admittance magnitude and angle overlay for the Smith chart; and graphical combination of normalized polar impedance vectors.

Chapter Contents:

  • 6.1 Impedance Concepts
  • 6.2 Impedance-admittance Vectors
  • 6.3 Series-circuit Representations of Impedance and Equivalent Parallel-circuit Representations of Admittance on Conventional Smith Chart Coordinates
  • 6.4 Parallel-circuit Representations of Impedance and Series Circuit Representations of Admittance on an Alternate Form of the Smith Chart
  • 6.5 Smith Chart Overlay for Converting a Series-circuit Impedance to an Equivalent Parallel-circuit Impedance, and a Parallel Circuit Admittance to an Equivalent Series-circuit Admittance
  • 6.6 Impedance or Admittance Magnitude and Angle Overlay for the Smith Chart
  • 6.7 Graphical Combination of Normalized Polar Impedance Vectors

Inspec keywords: electric admittance measurement; electric admittance; equivalent circuits

Other keywords: equivalent series-circuit admittance; equivalent parallel-circuit representation; series-circuit representations; impedance-admittance relationship; parallel circuit admittance; equivalent circuit representation; equivalent impedance; waveguide input admittance; waveguide input impedance; series circuit representation; normalized polar impedance vector; Smith chart; equivalent admittance

Subjects: Semiconductor integrated circuit design, layout, modelling and testing; General circuit analysis and synthesis methods; Impedance and admittance measurement; Semiconductor device modelling, equivalent circuits, design and testing

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