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Where To Find This Example

AWR Version 15

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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AWR Version 14

This example is not available for AWR Version 14 or earlier.

Design Notes

Cascaded Damage Indicator Measurement

This project shows how to use the cascaded damage indicator measurement, C_DAMAGE, in VSS.

C_DAMAGE computes cascaded operating point headroom relative to a power level at which damage is considered to occur at block input ports using the VSS RF Budget Analysis simulator. C_DAMAGE is similar to C_HDRM except that instead of comparing the input power to the 1 dB compression point, it is compared against a threshold above which damage is considered to occur, referred to as PIN_MAX. Such values are specified for individual blocks by adding a user attribute named "PIN_MAX."

A UATTR annotation can be added to the system diagram (found under the Attribute folder in Annotations) to highlight the block(s) operating at input levels exceeding their respective PIN_MAX settings.

This example project consists of a cascade of two PAs driven with a PORT_SRC at 0 dBm. The PIN_MAX attribute is set to 8 dBm for both PAs in the cascade. The second PA is highlighted to show that it is operating above its defined PIN_MAX setting and the simulation results show that it is driven approximately 1.2 dB beyond that level.

Further information can be found in the measurement help.

System Diagram - Cascade

Graph - Cascaded Power Measurements