模拟平坦带通滤波器设计与实现  

Design and Implementation of Analog FlatBandpass Filter

作　　者：沈小青[1] 余清华[1] 邱斌[1] 王志虎[1] 夏伟[1] SHEN Xiaoqing;YU Qinghua;QIU Bin;WANG Zhihu;XIA Wei(China Satellite maritime measurement and control department,Wuxi,Jiangsu 214431,China)

机构地区：[1]中国卫星海上测控部,江苏无锡214431

出　　处：《自动化与仪器仪表》2022年第2期130-132,137,共4页Automation & Instrumentation

摘　　要：数字通信基带设备需要通过中频噪声发生器实现通带内误码率、门限等性能测试,中频噪声发生器的信号通带内平坦度及截止频率指标将影响到被测量的测量准确度,设计思路是采取模拟滤波加数字滤波的方法。论述模拟平坦带通滤波器设计、实现。通过对LC滤波器进行研究,得到LC元件设计值,b并使用参数值临近的实际元器件来替代理想元器件,通过ADS软件对模拟滤波器进行仿真,仿真结果满意,通过矢量网络分析仪对设计的模拟滤波器进行了实测,并分析了不确定度分量来源,合成不确定度得到测量结果扩展不确定度度,实测结果满意,综合得到满足设计指标的适宜方案。The baseband equipment of digital communication needs to test the BER and threshold in the pass band through the if noise generator. The flatness and cutoff frequency index of the signal pass band of the if noise generator will affect the measurement accuracy. The design idea is to adopt the method of analog filter and digital filter. The design and implementation of analog flat band-pass filter are discussed. Through the study of LC filter, the design value of LC element is obtained. B. the actual components near the parameter value are used to replace the ideal components. The simulation results are satisfied by ADS software. The simulation results are satisfied. The designed analog filter is measured by vector network analyzer, and the source of uncertainty component is analyzed, The results of the measurement are obtained by the synthetic uncertainty, and the measured results are satisfied. The suitable scheme satisfying the design index is obtained.

关 键 词：滤波器 LC LPF BPF 不确定度 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置] TN98[自动化与计算机技术—控制科学与工程]