Differential port matching function allows simulating to embedding a matching circuit in a balanced port. This balanced port must be formed by the balance-unbalance conversion function. Modeling occurs due to the mathematical change in the matrix of S-parameters of the mixed mode (Single ended – Balanced devices).
Differential Port Matching function
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The differential balance matching function applies only to balanced ports. |
The embedded simulated matching circuit may be:
•A predefined circuit for parallel connection of inductance and capacitance (See figure below). Parameters of elements must be specified in the software.
Predefined matching circuit
•User matching circuit (See figure below) with parameters defined by a file in Touchstone format (* .S2P).
User matching circuit
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To enable/disable differential port matching function, use the following softkeys: Analysis > Fixture Simulator > Diff Matching > Diff Matching [ON | OFF] |
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Set the values of the elements of the matching circuit when using a predefined circuit for parallel connection of inductance and capacitance: Analysis > Fixture Simulator > Diff Matching > [L | R | C | G] Where: •L — inductance, H. •R — resistance, Ω. •C — capacitance, F. •G — conductance, S. |
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To enable user matching circuit - download it S-parameters in *.S2P format, use the following softkeys: Analysis > Fixture Simulator > Diff Matching > User File Specify the Touchstone file with the embedded circuit parameters. |
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To select a matching circuit, use the following softkeys: Analysis > Fixture Simulator > Diff Matching > Bal Port n > [ None | Shunt L – Shunt C | User ] Where: •None — matching not used. •Shunt L – Shunt C — the matching circuit is a parallel connection of inductance and capacitance (See figure Predefined matching circuit). •User — the matching circuit with parameters defined by a file in Touchstone format (*.S2P). (See figure User matching circuit). |
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If the S-parameters file is not specified, the selection of the user matching circuit is not available. The selected topology determines the correspondence of the Analyzer ports to balanced ports (See Balance-Unbalance Conversion). |
