Digital baseband pre-distortion of class-D outphasing amplifiers

摘要: This paper presents a structure and method formodeling digitally pre-distorting outphasing amplifiers. Themodels pre-distortion are evaluated on CMOS low-power class-D amplifier using uplink WCDMA signals.Using the proposed pre-distorter improves ACLR by no lessthan 12 dB making fulfill 3GPP requirementson ACLR.