| 用于RDS信号处理的开关电容滤波器的设计 |
| |
| 引用本文： | 王成,徐巍,朱里嘉.用于RDS信号处理的开关电容滤波器的设计[J].电子与封装,2008,8(5):18-21. |
| |
| 作者姓名： | 王成 徐巍 朱里嘉 |
| |
| 作者单位： | 中国电子科技集团公司第五十八研究所,江苏,无锡,214035;中国电子科技集团公司第五十八研究所,江苏,无锡,214035;中国电子科技集团公司第五十八研究所,江苏,无锡,214035 |
| |
| 摘 要： | RDS是对FM广播系统应用的重大发展，其接收和解码需要性能较高的开关电容滤波器。通常采用计算z域传递函数，并将其分级用开关电容电路实现的设计方法。这种方法计算复杂，且滤波器的各级结构差异较大。文中提出一种基于重复单元的设计思路，将一个高阶开关电容滤波器拆分为几个结构完全一样的低阶滤波器单元。以二阶连续时间滤波器为基础，用开关电容模拟等效电阻，最终完成一个用于RDS信号处理的八阶开关电容滤波器，简化了设计，但同样具有较好的性能。
|
| 关 键 词： | RDS信号 开关电容滤波器 连续时间滤波器 |
| 文章编号： | 1681-1070(2008)05-0018-04 |
| 修稿时间： | 2008年4月5日 |
A Switched Capacitor Filter Designed for RDS Signal Processing |
| |
| WANG Cheng,XU Wei,ZHU Li-jia.A Switched Capacitor Filter Designed for RDS Signal Processing[J].Electronics & Packaging,2008,8(5):18-21. |
| |
| Authors: | WANG Cheng XU Wei ZHU Li-jia |
| |
| Affiliation: | ( China Electronics Technology Group Corporation No.58 Research institute, Wuxi 214035, China ) |
| |
| Abstract: | RDS is a significant improvement for FM broadcasting system. The receiving and decoding of RDS signal requires a switched capacitor filter with good performance. The normal design process calculates the transfer function,then devides the filter into several stages and realizes them with switched capacitor circuit,which is quite complex and every stage of the filter is different from the other. This paper presents a method that designs a high order switched capacitor filter with the low order filter cell of the same structure. This method bases on the design of second order continuous time filter and uses switched capacitor to emulate resistor,accomplishing a eighth order switched capacitor filter which is simple but plenty good for RDS signal processing. |
| |
| Keywords: | RDS signal switched capacitor filter continuous time filter |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
