摘要
分析了几种经典的滤波器原型设计原理及其自身不足,基于勒让德多项式,给出了一种新的低通滤波器设计原型。绘制出新的低通滤波器原型整个频带内不同节数时的衰减特性,计算出不同节数时原型各节参数。同一指标下,设计出巴特沃斯、契比雪夫、勒让德原型滤波器印制板,给出并比较了实现尺寸与滤波特性。
Based on Legendre multinomial,a new kind of low-pass filter prototype is designed out after analyzing the design rule and inefficiency of some classical filter prototypes. The attenuation function curve of the new prototype with different number of resonance components is drawn in the whole frequency band,all the components＇ parameters are calculated out. In a same stadard,PCB based on Butterworth, Chebyshev,Legendre are dsigned out,the dimension and filter function are compared.
出处
《火力与指挥控制》
CSCD
北大核心
2006年第3期65-67,共3页
Fire Control & Command Control
关键词
勒让德多项式
滤波器原型
带内衰减
Legendre multinomial
filter prototype
in-band attenuation
