精品文档---下载后可任意编辑一种带有可控的预失真自适应线性化偏置电路的功率放大器的开题报告摘要：随着无线通信技术的不断进展，高性能功率放大器是无线通信领域中不可或缺的组成部分。然而，功率放大器存在线性度差、功率效率差等缺陷，严重影响了系统的性能。预失真自适应线性化偏置电路是实现高性能功率放大器的有效方法之一。本文提出了一种带有可控的预失真自适应线性化偏置电路的功率放大器，通过利用差分信号将输入信号分为直流重量和高频重量，分别进行偏置和放大处理，然后在输出端采纳可控的预失真电路进行线性度补偿。仿真结果表明，所提出的功率放大器具有优异的线性度和功率效率，适用于一系列无线通信应用。关键词：功率放大器，预失真，自适应线性化，偏置电路，可控Abstract：With the continuous development of wireless communication technology, high-performance power amplifiers are indispensable components in the field of wireless communication. However, power amplifiers have defects such as poor linearity and poor power efficiency, which seriously affect the performance of the system. Pre-distortion adaptive linearization bias circuit is one of the effective methods to achieve high-performance power amplifiers. In this paper, a power amplifier with controllable pre-distortion adaptive linearization bias circuit is proposed. The input signal is divided into DC component and high-frequency component by using differential signal, and then biased and amplified, and then linearization compensation is performed by using controllable pre-distortion circuit at the output end. Simulation results show that the proposed power amplifier has excellent linearity and power efficiency, and is suitable for a series of wireless communication applications.Keywords: Power Amplifier, Pre-distortion, Adaptive Linearization, Bias Circuit, Controllable
