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| 一种用于UWB接收端的带通滤波器分析与设计 | |
| 引用本文： | 王斌,吴伟仁,曲毓萱,陈志发.一种用于UWB接收端的带通滤波器分析与设计[J].中南大学学报(自然科学版),2012,43(2):554-560. |
| 作者姓名： | 王斌 吴伟仁 曲毓萱 陈志发 |
| 作者单位： | 1. 中国科学院电子学研究所,北京,100190 2. 中国兵器工业新技术推广研究所,北京,100089 3. 香港应用科技研究院有限公司,香港,999077 |
| 基金项目： | 国家自然科学基金资助项目(60970137);国家重大专项(2008ZX03006-001,2009ZX03006-006);中国科学院知识创新工程项目(KGCX2-YW-120) |
| 摘 要： | 采用0.18 μm工艺设计1个用于UWB接收端的4阶切比雪夫有源RC带通滤波器.给出1种有损积分器直流增益补偿策略,从而减小滤波器对运算放大器直流增益的要求.同时,采用1种数控电阻的方式实现通带增益的调节.仿真结果表明:所设计的滤波器在通带增益为0dB时,通带纹波增益为0.112 dB,下-3 dB频率为156 kHz,上-3 dB频率为259 MHz,带宽为258.844 MHz；频率为500 MHz处的信号衰减为28.25 dB,频率为792MHz处的信号衰减为45.16dB,完全符合UWB接收端对带通滤波器的性能指标要求. |
| 关 键 词： | 超宽带 带通滤波器 通带纹波 |
Analysis and design of a band-pass filter for UWB receiver |
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| WANG Bin , WU Wei-ren , QU Yu-xuan , CHEN Zhi-fa.Analysis and design of a band-pass filter for UWB receiver[J].Journal of Central South University:Science and Technology,2012,43(2):554-560. | |
| Authors: | WANG Bin WU Wei-ren QU Yu-xuan CHEN Zhi-fa |
| Institution: | 1.Institute of Electronics,Chinese Academy of Sciences,Beijing 100190,China; 2.Advanced Technology Generalization Institute of CNGC,Beijing 100089,China; 3.Hong Kong Applied Science and Technology Research Institute Co.Ltd.,Hong Kong 999077,China) |
| Abstract: | A forth-order Chebyshev active RC band-pass filter was designed in 0.18 μm process for ultra-wide band(UWB) receiver.A DC-Gain compensation scheme for lossy integrator was presented to relax the requirement for the DC gain of the op-amp.Meanwhile,a pass-band gain tuning structure was implemented by adopting digital controlled resistor tank.The results show that when the pass-band gain of the filter is tuned to 0 dB,ripples of filter is 0.112 dB,lower ?3 dB frequency is 156 kHz,upper ?3 dB frequency is 259 MHz,bandwidth is 258.844 MHz,attenuation is 28.25 dB at 500 MHz and is 45.16 dB at 792 MHz.All these results meet the specifications of the band-pass filter for UWB receiver completely. |
| Keywords: | ultra-wide band(UWB) band-pass filter pass-band ripple |
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