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Where To Find This Example

Select Help > Open Examples... from the menus and type either the example name listed above or one of the keywords below.

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Design Notes

RFB C_S11 and C_S22 Measurement

This example shows RFB being used to measure S11 and S22 of a filter. The graph "BPF Response" shows the response of the filter taken directly from the Touchstone data file "BPF."

LIN_S in the system diagram "Filter" is used to read in  theTouchstone data.

The PORT_SRC source has its center frequency set to 1000MHz.  Under Options (from the main tool bar) --> Default System Options --> in the Frequency Analysis tab offset frequencies from 1000MHz are defined. In effect, the frequency analysis information  is being used to sweep the the PORT_SRC source's center frequency from 600MHz to 1400MHz in increments of 4Mz.  The RFB measurement setting will display 600MHz to 1400MHz on the x-axis.

Please read the VSS Modeling Guide under Help --> Getting Started for more information on RFB.

System Diagram - Filter

Graph - BPF Response

Graph - RFB S22 and S11