关键词：电子信息；电子；功率放大器；线性化技术
摘 要：In this chapter, RF modulation schemes effects on RF power amplifier nonlinearities are presented. A review of various power amplifier RF linearization techniques are discussed. 2.2 RF Modulation Scheme in Bandpass Radio Communication Channel In radio communications, modulation can be described as the process of conveying a message signal by superimposing an information bearing signal onto a carrier signal by varying the signal characteristic [31-33]. Modulation is the process of changing a higher frequency signal in proportion to a lower frequency one or vise versa.