An efficiency optimized controlling scheme for dynamic load modulation of power amplifiers
Paper in proceedings, 2008

An efficiency optimized controlling scheme for dynamic load modulation (DLM) of power amplifiers (PAs) is proposed. In this scheme, both the input signal and load impedance are controlled to allow high efficiency operation of PAs for a desired output signal modulation. The proposed technique is demonstrated by two 1 GHz, LDMOS, switched mode power amplifiers (SMPAs) which are characterized by varying the input power during load-pull measurements. It is shown that the power-added efficiency (PAE) of the PAs in back-off operation can significantly be improved by the optimum controlling scheme.

LDMOS

power amplifier

efficiency

dynamic load modulation

Author

Hossein Mashad Nemati

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Christian Fager

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Ulf Gustavsson

Herbert Zirath

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

European Microwave Conf., Proc., Oct. 2008

583-586

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

More information

Created

10/7/2017