AM to PM conversion

 

If the amplifier is operated towards its peak power capability, non-linearity, usually compression, will cause the long vectors in the diagram (above) to end up shorter than they should be, the shorter vectors less affected. The corners will move inwards. If the degree of compression is –1 dB compared with a fully linear amplifier, our vector length will be down around 10%.

 

1db_graph.png

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