宽带直流放大器范文

陕西理工学院2013年电子设计竞赛

题 目: 姓 名: 完成地点: 完成日期:

宽 带 直 流 放 大 器 赵佳辰 李伟波 王康

陕西理工学院北区501高频实验室 年6月21日 2013宽 带 直 流 放 大 器

赵甲辰、李伟波、王康

摘 要:针对小信号的幅度小、干扰大、线性放大难和提取难度大等问题, 设计一种宽带直流放大器,是以可变增益放大器AD603为核心的放大电路。前级信号调理电路、后级功率放大电路和滤波电路组成。该放大器具有高增益连续可调、输出波形无明显失真、有效控制零点漂移和噪声、可输出大功率等特性,且在0-10MHZ的频带内信号可放大。

关键词:可控增益;带宽;零点漂移;功率放大器

Wideband DC amplifier

Zhao Jiachen, Li Weibo, Wang Kang

Abstract: Based on the size of small signal and large disturbance, ifficult

to make the linear amplification and extraction is difficult, to design a broadband dc amplifier, based on the variable gain amplifier AD603 amplification circuit as the core. Levels before after signal regulate circuit, power amplifying circuit and filter circuit. The amplifier has high gain continuous adjustable, no obvious distortion of output waveform, effective control of zero drift and noise, can output high power, such as characteristics, and in the 0 to 10 MHZ frequency band signal can be amplified.

Key words: Controllable gain; Bandwidth; Zero drift; Power amplifier

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