This paper describes a novel, low cost active bias control configuration for a multi-carrier UMTS power amplifier. It consists simply of a detector and a gain-controlled op-amp, which tracks the envelope of an RF input signal to modulate the bias supply current to a standard monolithic amplifier. Simulation results indicate that power efficiency is improved and IMD level is reduced.
|Number of pages||3|
|Publication status||Published - 1 Dec 2000|
|Event||5th IEEE High Frequency Postgraduate Colloquium - Dublin, Ireland|
Duration: 7 Sep 2000 → 8 Sep 2000
|Conference||5th IEEE High Frequency Postgraduate Colloquium|
|Period||7/09/00 → 8/09/00|