基于时间模式信号处理的三阶FIR滤波器实现  

Realization of third⁃order FIR filter based on time modal signal processing

作　　者：赵倩[1] 陈杨军 ZHAO Qian;CHEN Yangjun(Xi’an Traffic Enginering Institute,Xi’an 710300,China)

机构地区：[1]西安交通工程学院,陕西西安710300

出　　处：《电子设计工程》2023年第20期91-95,共5页Electronic Design Engineering

摘　　要：文中提出了一种基于时间模式信号处理电路的三阶低通有限脉冲响应(FIR)滤波器的实现。滤波器拓扑由一组新颖的构建块组成,这些构建块在时间模式下执行必要的功能,包括z-1运算、时间加法和时间乘法。设计的时域三阶FIR滤波器的输出与采样频率同步,且该滤波器的拓扑结构是模块化的,因此只需增加延迟和乘法器的数量就可以创建高阶滤波器。滤波器是在28 nm三星全耗尽绝缘体上硅FD-SOI工艺中设计的,电源电压为1 V,采样频率为5 MHz,仿真结果验证了理论分析的正确性,FIR滤波器在50 kHz的输入频率下实现了38.6 dB的信噪加失真比(SNDR),功耗约为200μW。An implementation of a third⁃order low⁃pass Finite Impulse Response(FIR)filter based on a time⁃modal signal processing circuit is proposed.The filter topology consists of a novel set of building blocks that perform necessary functions in temporal mode,including z-1 operations,temporal addition,and temporal multiplication.The output of the designed time⁃domain third⁃order FIR filter is synchronized with the sampling frequency,and the topology of the filter is modular,so that higher⁃order filters can be created by simply increasing the delay and the number of multipliers.The filter is designed in a 28 nm Samsung fully depleted silicon⁃on⁃insulator FD-SOI process with a supply voltage of 1 V and a sampling frequency of 5 MHz.The simulation results verify the correctness of the theoretical analysis.The FIR filter achieves a Signal⁃to⁃Noise⁃plus⁃Distortion Ratio(SNDR)of 38.6 dB at an input frequency of 50 kHz and consumes about 200μW.

关 键 词：有限脉冲响应 脉宽调制 时间模式信号处理电路 FIR滤波器 

分 类 号：TN713[电子电信—电路与系统]