This contribution presents the application of Envelope Tracking technique on a LDMOS 2nd harmonic tuned PA, designed to operate at 2.14 GHz. Accounting for the input dynamic signal, optimum drain and gate bias voltages are derived starting from a simplified model of the active device. Experimental results give an increase up to 40% in average efficiency, when bias tracking is applied. The application of Envelope Tracking does not impact on output power and gain performance, in the selected back-off region, implying also a reduction in the spectral regrowth when complex signals are involved.
Cipriani, E., Colantonio, P., Giannini, F., Giofre', R., Piazzon, L. (2010). Effects of envelope tracking technique on an L-band power amplifier. In Proceedings of 15th IEEE mediterranean electrotechnical conference, Melecon 2010 (pp.348-352) [10.1109/MELCON.2010.5476263].
Effects of envelope tracking technique on an L-band power amplifier
COLANTONIO, PAOLO;GIANNINI, FRANCO;GIOFRE', ROCCO;PIAZZON, LUCA
2010-04-01
Abstract
This contribution presents the application of Envelope Tracking technique on a LDMOS 2nd harmonic tuned PA, designed to operate at 2.14 GHz. Accounting for the input dynamic signal, optimum drain and gate bias voltages are derived starting from a simplified model of the active device. Experimental results give an increase up to 40% in average efficiency, when bias tracking is applied. The application of Envelope Tracking does not impact on output power and gain performance, in the selected back-off region, implying also a reduction in the spectral regrowth when complex signals are involved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
