摘要
基于DDS技术的基本原理,以设计低通滤波器为目的,采用EDA软件Multisim2001进行仿真,研究了低通滤波器的设计方法,确定了低通滤波器的结构、阶数,并设计相关参数,得出了截至频率为120MHz的7阶的低通滤波器,其幅频特性好,具有快速的衰减性。
The low-pass elliptic filter is designed on the primary principle of the direct digital synthesis technique using EDA simulation. The method for designing the low-pass elliptic filter is introduced. A 7th order low-pass elliptic filter with the cut-off frequency of Hz is attained. It has good phase frequency characteristic and speedy attenuation.
出处
《电子科技》
2006年第3期17-20,共4页
Electronic Science and Technology
