R&S®SMW-K540 Envelope Tracking

Detroughing shaping function

The detroughing function ensures that a minimum supply voltage is present at the transistor and improves PA linearity. Detroughing is used to prevent that the supply voltage Vcc drops to zero. The detroughing factor controls envelope shaping and the minimum clipping level.

Automatic envelope voltage adaptation

With automatic envelope voltage adaptation, envelope waveform generation is based on the physical characteristics of the PA (Pin and VCC). This enables power sweeps with automatic recalculation of the envelope waveform and avoids time-consuming parameter adjustments for different power levels.

Graphical user interface for automatic envelope voltage adaptation.
Graphical representation of amplifier input power versus effective DC modulator voltage.
Automatic envelope voltage adaptation for different RF power levels saves time for PA dynamic range tests.
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