pancho_hideboo
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Calculation method of S-parameters is different between Cadence Spectre and Keysight ADSsim.
Cadence Spectre evaluates Y-parameters first internally.
Then it converts Y-parameters to S-parameters using reference impedance values.
Some simulator has option to choose Y or Z parameters.
On the other hand, Keysigh ADSsim does not use Y or Z parameters to calculate S-parameters.
Keysigh ADSsim calculate S-parameters directly by power wave formulation.
Power wave is defined by voltage, current an reference impedance.
Assume 2-port DUT where Y-parameters don't exist.
For example, shunt element.
Cadence Spectre can not give S-parameters.
Keysigh ADSsim can give S-parameters.
Cadence Spectre evaluates Y-parameters first internally.
Then it converts Y-parameters to S-parameters using reference impedance values.
Some simulator has option to choose Y or Z parameters.
On the other hand, Keysigh ADSsim does not use Y or Z parameters to calculate S-parameters.
Keysigh ADSsim calculate S-parameters directly by power wave formulation.
Power wave is defined by voltage, current an reference impedance.
Assume 2-port DUT where Y-parameters don't exist.
For example, shunt element.
Cadence Spectre can not give S-parameters.
Keysigh ADSsim can give S-parameters.
Last edited: