Tuner Fixtures Files

Tuner fixture files allows to control tuner in the DUT reference plane, taking into account different passive components which was not include in the tuner characterization file (To learn more on tuner characterizaztion see : Mtune Characterization Wizard).
Note: Tuner Auto De-embedding Calibrationallows to correct the tuner characterization file from tuner's coaxial reference plane to the DUT reference plane, generating automatically Front and Term fixtures files. Using Auto de-embedding feature, the tuners do not need to be re-calibrated when a probe or cable is changed between the DUT and the tuner.

Front fixture

Front fixture file represents all passive components located between the tuner characterization plane and the DUT reference plane.


When clicking on the “Front” the following menu appears on the right side of the schematic editor:

  • S-Parameters File: select the *.S2P file corresponding to the coupler/probe/cables. Click on the icon or select a file included in the Files manager of IQSTAR through the icon.
Note: *.S2P file can be plotted using the icon
  • Swap: select to change the orientation of the *.S2P file.

Back fixture

Back fixture file represents all passive components located behind the tuner characterization plane.


When clicking on the “Back” the following menu appears on the right side of the schematic editor:



  • S-Parameters File: select the *.S2P file corresponding to the coupler/attenuator/cables. Click on the icon or select a file included in the Files manager of IQSTAR through the icon.
    Note: *.S2P file can be plotted using the icon
  • Swap: select to change the orientation of the *.S2P file.

Termination

Termination file represents the load seen by the tuner.


When clicking on the “Term” the following menu appears on the right side of the schematic editor:



  • S-Parameters File: select the *.S1P file corresponding to the termination load. Click on the icon or select a file included in the Files manager of IQSTAR through the icon.
    Note: *.S1P file can be plotted using the icon