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本文结合带通滤波器的设计实例,介绍了用MATLAB设计、实现IIR数字滤波器的方法,并分析了硬件实现中的数据处理。 相似文献
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FIR和IIR数字滤波器广泛应用于各种数字信号处理系统。从坐标旋转公式出发,阐述了CORDIC算法的原理.同时在FPGA上实现了该算法的设计,并且基于CORDIC算法建立了FIR和IIR数字滤波器的电路模型,使之能在同一电路上通过开关控制集成实现。 相似文献
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本文论讨了一种IIR型滤波器的MATIAB设计和性能分析,及其在DPS(TS101)和FPGA上的两种硬件实现方法。MATLAB仿真和硬件实验均表明,该滤波器能够较好地滤除固定目标回波和低速杂波,满足某型雷达设计技术指标要求 相似文献
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IIR数字滤波器广泛应用于各种数字信号处理系统,本文从坐标旋转公式出发,说明了CORDIC算法的原理。并且基于CORDIC算法重构了IIR数字滤波器的实现模型,在保证性能的条件下,很大程度上减小了硬件的花费,并且通过ModelSim5.7和Synplify进行仿真综合,验证了设计的正确性和有效性。 相似文献
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介绍了基于VC++.net的IIR数字滤波器的设计与实现。利用LabWindows/CVI所提供的图形界面窗口,实现IIR数字滤波器的功能,程序在VC++.net环境中调试通过。 相似文献
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无限脉冲响应(IIR)数字滤波器在很多领域中有着广阔的应用。本文用Butterworth法、切比雪夫1法法、切比雪夫2法通过MATLAB仿真软件对几种给定性能的IIR数字滤波器进行了仿真设计,并用基于MOTOROLA公司的M68HC11单片机进行了硬件设计实现,表明数字滤波器具有灵活、方便、功能强的特点。 相似文献
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由于IIR数字滤波器设计实质上是一个非线性高维复杂函数优化问题,文中提出基于具有全局搜索能力强,收敛速度快特点的免疫算法实现IIR数字滤波器优化设计的新方法,给出了IIR滤波器优化设计的数学模型,描述了应用免疫算法优化设计IIR数字滤波器的具体实现步骤。通过低通和高通IIR数字滤波器设计的仿真结果表明方法的有效性和高效性。 相似文献
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A design of current-mode continuous-time filters for low voltage and high frequency applications using complementary bipolar current mirror pairs is presented. The proposed current-mode filters consist of simple bipolar current mirrors and capacitors and are quite suitable for monolithic integration. Since the filters are based on the integrator type of realization, the proposed method can be used for a wide range of applications. The frequency of the filters can easily be changed by the DC controlling current. A fifth-order Butterworth and a third-order leapfrog filter with tunable cutoff frequencies from 20 MHz to 100 MHz are designed as examples and simulated by SPICE using standard bipolar parameters. 相似文献
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Celestino A. Corral 《Analog Integrated Circuits and Signal Processing》2005,42(2):147-159
The inverse ultraspherical filter is derived and its properties analyzed. It is shown that the inverse ultraspherical filter has smaller transition band than the inverse Chebyshev filter under certain circumstances while still maintaining the maximally flat passband characteristic. Filter pole and zero calculations are described and typical magnitude and delay responses generated. Nomographs of inverse ultraspherical filters are also provided for determining filter order and for possible magnitude response optimization.Celestino A. Corral was born in Havana, Cuba. He earned his Bachelors, Masters and Ph.D. degrees in electrical engineering from the University of Miami, Florida, in 1985, 1987, and 1993, respectively. He completed his Ph.D. program under a Patricia Roberts Harris fellowship. From 1988 to 1990 Dr. Corral was a Member of the Technical Staff at Sandia National Laboratories, Albuquerque, New Mexico, where he was involved in the analysis, modeling, and design of custom circuits for piezoelectric sensor components. In 1994, he joined Scientific-Atlanta in Atlanta, Georgia, as an Associate Staff RF Engineer and worked on communication systems and specialized microwave software. In 1997 he was Senior Design Engineer at Origin Data Systems in Boca Raton, Florida, where he had multiple roles in system, hardware, and software development for a novel asset management/RFID system. Currently, Dr. Corral is a Distinguished Member of the Technical Staff in Motorola Labs, Plantation, Florida, and is involved in ultra-wideband, wideband, and propagation research. His interests include circuit and filter theory, communication systems, numerical analysis, signal processing, and constrained optimization. He has published over twenty-five journal and conference papers, has six patents filed, and two trade secrets.Dr. Corral was principal recipient of the Myril B. Reed Best Paper Award for the 40th Midwest Symposium on Circuits and Systems in 1997. Dr. Corral is also the principal recipient of the Ambrose Fleming Premium for IEE Proceedings on Circuits, Devices, and Systems, 2000. Dr. Corral is a Senior Member of IEEE and a member of Omicron Delta Kappa, Tau Beta Pi, and Eta Kappa Nu honor societies. 相似文献
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介绍了采用三维微波电磁场仿真软件快速提取直接耦合波导带通滤波器耦合窗口参数的方法,并提出了优化最终模型的快速扫描技术.全波仿真及实验结果表明,该方法能满足波导带通滤波器快速精确设计的要求. 相似文献
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A directional filter has a passband extending fully along a straight line passing through the origin. In its original form the transformation technique, a powerful tool for designing two-dimensional FIR filters, is not useful to design such a filter. In this communication we suggest a few analytical and optimisation-based methods to design directional filters using the transformation technique. The superiority of the proposed methods over existing techniques is demonstrated. 相似文献
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一种基于CIC滤波器的有效锐化方法研究 总被引:2,自引:0,他引:2
介绍了对积分梳状滤波器(CIC滤波器)的有效锐化。所提出的锐化滤波器的结构由两个主要部分组成:一个梳状滤波器的级联部分和一个锐化滤波器部分。所提出的方案使得滤波器中锐化部分的工作速率比输入速率大为降低,其频谱响应特性比传统的也有所改进。通过MATLAB仿真,可看出改进锐化后的滤波器性能更优。 相似文献
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Design techniques for a new class of integrated monolithic high-permittivity ceramic waveguide filters are presented. These filters enable a size reduction of 50% compared to air-filled transverse electromagnetic filters with the same unloaded Q-factor. Designs for Chebyshev and asymmetric generalised Chebyshev filter and a diplexer are presented with experimental results for an 1800 MHz Chebyshev filter and a 1700 MHz generalised Chebyshev filter showing excellent agreement with theory. 相似文献
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本文介绍了在数字下变频(DDC)中的抽取滤波器系统设计方法和具体实现方案。采用CIC滤波器、HB滤波器、FIR滤波器三级级联的方式来降低采样率。通过实际验证,证明了设计的可行性。 相似文献
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Hyun-Lark Do Byung-Woon Choi Bong-Hwan Kwon 《International Journal of Electronics》2013,100(7):385-405
Single-stage line-coupled ac/dc converter with high power factor and ripple-free input current is proposed. The proposed power factor correction circuit can achieve high power factor and ripple-free input current using a coupled inductor. Experimental results for a 400?W converter at a constant switching frequency of 100?kHz are obtained to show the performance of the proposed converter. 相似文献