摘要
分析功率放大器非线性失真的原因及其对广播信号质量的影响,指出非线性失真不仅降低信号质量,还可能干扰其他无线电设备并加速设备老化。综述前馈法、反馈法和预失真法等主流线性化技术的原理及应用,并讨论它们在中波广播发射机中的适用性。提出线性化技术的优化策略,以期提高功率放大器的线性化效果,进而提升广播信号的质量和传输效率。
This paper analyzes the causes of nonlinear distortion in power amplifiers and its impact on the quality of broadcast signals,pointing out that nonlinear distortion not only degrades signal quality but may also interfere with other radio equipment and accelerate equipment aging.It summarizes the principles and applications of mainstream linearization techniques such as feedforward,feedback,and predistortion methods,and discusses their applicability in medium wave broadcast transmiters.Optimization strategies for linearization technology are proposed.The goal is to improve the linearization effect of the power amplifier,thereby enhancing the quality and transmission efficiency of the broadcast signal.
作者
单婷婷
SHAN Tingting(Anhui Radio and Television Station Suzhou Broadcasting Station,Suzhou 234000,China)
出处
《电视技术》
2024年第11期20-22,33,共4页
Video Engineering
关键词
中波广播发射机
功率放大器
线性化技术
medium wave broadcast transmitter
power amplifier
linearization technology
