基于System View的FIR数字滤波器设计

探讨了运用SystemView软件,从图形化的工具和数字化的指标入手,抛开传统滤波器设计中繁琐的计算与变换,直接快速实现在数字存储示波器中,为了消除前端系统本身的噪声而设计的FIR数字滤波器。并且运用SystemView软件的分析工具,对所设计的FIR数字滤波器的幅频特性、相频特性、阻带衰减、通带纹波等性能进行了分析。通过分析报表和特性图形显示所设计的FIR数字滤波器技术指标完全满足数字存储示波器系统的技术要求。

Design of FIR Digital Filter Based on System View

This text deals with the application of SystemView software,turning from the sketch of tool and numeral turn of the index sign commence,laying aside the tedious calculation,transformation in the traditional filter design,thus adopting design that SystemView software carries out a direct numerical filter with a hign speed,which can eliminate noise coming from front end system in digital storage oscilloscope.And it also applies the analytical tool of SystemView software,while carrying on amplitude-frequency characteristic,to the numerical filter designed,phase-frequency characteristic,bandstop attenuation,as well as the analysis of passband ripple.The technique index of FIR digital filter designed can satisfy technical requirement of digital storage oscilloscope by manifestation of analysing report forms and characteristic sketch.