High-efficiency cellular phone transmitters with reduced power consumption

摘要

In this paper, new circuit design approaches for wireless handset power amplifiers with reduced power consumption for 3G cellular systems are presented. Basic circuit configuration for power amplifiers represents the switched-mode parallel-circuit Class E mode increasing the overall power-added efficiency. Broadband properties to overlap simultaneously several operating bandwidths like WCDMA, CDMA2000 andDCSlSOO with high efficiency and without output matching circuit tuning are discussed. The novel monolithic InGaP/GaAs HBT power amplifier configurations with switched segments and switched load with experimental and simulation results are also given.