Analysis of high power LDMOS amplifiers for industrial applications under mismatch conditions

This paper discusses the effects of combining structures on the RF and thermal performance of LDMOS high power amplifiers under mismatch conditions. Using a high gamma tuner, a typical power amplifier module is measured in terms of power and temperature in mismatch. Based on these measurements, the advantages and disadvantages of in-phase and balanced combining topologies are shown in the context of industrial applications.