| CIC滤波器在调制器应用中的性能研究 |
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| 引用本文： | 张健,陈岩,王华,匡镜明. CIC滤波器在调制器应用中的性能研究[J]. 北京理工大学学报, 2006, 26(4): 345-348 |
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| 作者姓名： | 张健 陈岩 王华 匡镜明 |
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| 作者单位： | 北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081 |
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| 摘 要： | 为了补偿级联积分梳状(CIC)滤波器固有的通带衰减,提出在CIC滤波器之前插入脉冲成形滤波器(PSF)进行预补偿的新算法,该算法不增加硬件复杂度.以多速率正交调制器为例分析了补偿后CIC滤波器的性能,给出了滤波器系统的频率响应.仿真结果表明该补偿算法实用,有效.
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| 关 键 词： | CIC滤波器 预补偿 正交调制 |
| 文章编号： | 1001-0645(2006)04-0345-04 |
| 收稿时间： | 2005-07-14 |
| 修稿时间： | 2005-07-14 |
Performance Analysis of Cascaded Integrator-Comb Filter in Modulator |
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| ZHANG Jian,CHEN Yan,WANG Hua and KUANG Jing-ming. Performance Analysis of Cascaded Integrator-Comb Filter in Modulator[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2006, 26(4): 345-348 |
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| Authors: | ZHANG Jian CHEN Yan WANG Hua KUANG Jing-ming |
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| Affiliation: | Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | For pre-compensating the passband droop of cascaded integrator-comb(CIC) filter,a novel method and its implementation algorithm are proposed,which uses the pulse shaping filter(PSF) while brings no additional hardware complexity.Then,an application example is given of a multi-rate quadrature modulator with a compensated CIC filter,and the frequency response of the whole system is analyzed.Moreover,the quality of the modulated signals is evaluated by simulation.The simulation results verify the validity of the proposed compensation method and its practicability of the compensated CIC filter. |
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| Keywords: | cascaded integrator-comb filter pre-compensation quadrature modulator |
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