宽带低频放大器的设计  

Design of Broad Band Low Frequency Amplifier

作　　者：范思安[1] 陈克难[1] 王林庆[1] 

机构地区：[1]中国工程物理研究院电子工程研究所,四川省绵阳市621900

出　　处：《信息化研究》2010年第7期54-56,59,共4页INFORMATIZATION RESEARCH

摘　　要：文中讨论了宽带低频放大器的设计。宽带网络采用有源低通滤波器和有源高通滤波器组合而成。在电路设计中，有源滤波电路和放大电路采用同一放大模块，这样简化了电路，缩小了体积，提高了产品的可靠性。通过分析低通滤波器和高通滤波器的设计过程，给出了试验数据、滤波器波形和宽带低频放大器电路图，再经过调整得到较好的通频带波形。该放大器在10～85kHz这个范围内，有较好的增益平坦度和稳定的性能，电压增益为60dB，满足设计要求。This paper discusses the design of broad band low frequency amplifer. The broad band consists of active filter and active highpass filter. In this circuit, the active filter and amplifer use the same module. The result is that circuit simplified, volume reduced and product reliability improved. The better passband wave is obtained by adjusting circuit. The broad band low frequency amplifer circuit diagram, output wave are presented. The amplifer has plain gain characteristic, steady performance in 10 working frequency bound. Its voltage gain is 60 dB. It meets the design requirements. test data and kHz ~ 85kHz

关 键 词：宽带低频放大器 低通 高通 

分 类 号：TN782[电子电信—电路与系统]