| 基于FPGA的新型抗混叠CIC抽取滤波器的设计与实现 |
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| 引用本文： | 赵伟,王静,刘宇.基于FPGA的新型抗混叠CIC抽取滤波器的设计与实现[J].大连海事大学学报(自然科学版),2007,33(1):99-101. |
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| 作者姓名： | 赵伟 王静 刘宇 |
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| 作者单位： | 大连海事大学信息工程学院 辽宁大连116026 |
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| 摘 要： | 针对传统的积分梳状滤波器在用作抽取抗混叠滤波器时,通带偏差和混叠镜像衰减难以满足软件无线电系统需要的问题,设计采用内插二阶多项式级联锐化CIC滤波器的改进方法,扩展了其通带带宽的同时提高了阻带衰减,并应用SOPC设计软件dspbuilder在一片FPGA芯片上予以实现,简化了设计流程,降低了成本和开发周期.
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| 关 键 词： | 积分梳状滤波器 内插二阶多项式 数字变频器 现场可编程门阵列 |
| 文章编号： | 1006-7736（2007）01-0099-03 |
| 修稿时间： | 2006-08-18 |
New anti-aliasing CIC filter design and realization on FPGA |
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| ZHAO Wei,WANG Jing,LIU Yu.New anti-aliasing CIC filter design and realization on FPGA[J].Journal of Dalian Maritime University,2007,33(1):99-101. |
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| Authors: | ZHAO Wei WANG Jing LIU Yu |
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| Institution: | Information Eng. College, Dalian Maritime Univ. , Dalian 116026, China |
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| Abstract: | The bias of passband and aliasing-imaging attenuation of the conventional Cascaded Integrator-Comb(CIC) filter,which is used as anti-aliasing filter for decimating and interpolating,always can't satisfy the requirement of software radio system.In this paper,an improved method with Sharpened CIC filter cascading Interpolated Second-Order Polynomials(ISOP) is proposed,it widens the passband and increases the stopband attenuation.Finally it is implemented on a FPGA chip by SOPC tool: dspbuilder.It simplifies the design flow,reduces the cost and development time. |
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| Keywords: | cascaded integrator-comb filter interpolated second-order polynomials digital converter field programable gate array |
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