1-Package 500W High Efficiency LDMOS Doherty Power Amplifier

Abstract

This paper presents a LDMOS high power high gain peaking device with an optimized pre-matching network implemented in a half 10×32mm air cavity plastic package. This peaking device allows the one package Doherty solution achieved 57.5dBm peak power in the 1.805-1.88 GHz band, and >53% efficiency, >17.5dB gain with 9.9PAR WCDMA signal at 8dB OBO with a classical asymmetrical 2 ways Doherty circuit. This Doherty could be linearized at −57dBc level with 60MHz 2-carrier LTE signal.