| 变带宽宽带数字下变频器的设计及其FPGA实现 |
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| 引用本文： | 敬祥,夏威,李朝海.变带宽宽带数字下变频器的设计及其FPGA实现[J].微电子学,2014(3):368-371. |
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| 作者姓名： | 敬祥 夏威 李朝海 |
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| 作者单位： | 电子科技大学电子工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(61101173);中央高校基本科研业务费资助项目(ZYGX2010J020) |
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| 摘 要： | 针对宽带数字接收系统要求处理带宽可变和高度抑制干扰的特点,从传统的基于多相结构的宽带DDC出发,引入窄带DDC中整形滤波的概念,设计了带宽可变、阻带抑制高的变带宽宽带DDC,且在FPGA上实现并验证了其设计的有效性。
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| 关 键 词： | 变带宽 宽带DDC FPGA 整形滤波 多相滤波 |
The Design of Variable-Bandwidth Wideband DDC and its FPGA Implementation |
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| JING Xiang,XIA Wei and LI Chaohai.The Design of Variable-Bandwidth Wideband DDC and its FPGA Implementation[J].Microelectronics,2014(3):368-371. |
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| Authors: | JING Xiang XIA Wei and LI Chaohai |
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| Affiliation: | School of Electronic Engineering, Univ. of Elec. Sci. and Technol. of China, Chengdu 610000, P. R. China;School of Electronic Engineering, Univ. of Elec. Sci. and Technol. of China, Chengdu 610000, P. R. China;School of Electronic Engineering, Univ. of Elec. Sci. and Technol. of China, Chengdu 610000, P. R. China |
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| Abstract: | Wideband digital receivers require variable bandwidth and highly stop-band rejection ratio. The variable-bandwitdh wideband DDC is deduced from the conventional wideband DDC based on polyphase filter structure and shaping filter in narrow-band down converter. Its bandwidth is variable and the stop-band rejection is in large ratio. The correctness and the validity are proved by the FPGA implementation. |
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| Keywords: | Variable-bandwidth Wideband DDC FPGA Shaping filter Polyphase filter |
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