推荐星级:
  • 1
  • 2
  • 3
  • 4
  • 5

三阶级联复数有源RC带通滤波器

更新时间:2020-07-28 01:01:33 大小:2M 上传用户:zhiyao6查看TA发布的资源 标签:带通滤波器 下载积分:5分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

资料介绍

采用0.18μmCMOS工艺设计了一款应用在无线传网中的三阶级联有源Rc复数带通滤波器,同时设计了自动频率调谐电路(AFT)。该滤波器采用的是切比雪夫逼近函数予以实现。在5比特数字控制码开关电容阵列的控制下,AFT电路即可完成对主体滤波器电路频率变化的校正。仿真结果显示,滤波器的中心频率稳定在2MHz,通带带宽为2MHz,镜像抑制比大于34dB,相邻信道阻带衰减大于34dB,通带纹波小于1dB,消耗电流为2.3mA,工作电源电压为1.8V。

A third order cascaded active RC complex band pass filter (BPF) with automatic frequency tuning ( AFT ) for WSN applications is designed using 0.18 μm RF CMOS process. The filter is implemented in Chebyshev biquad structure. The AFT circuit is introduced to calibrate the frequency variation by a 5-bit switched-capacitor array. Simulation results indicate that the filter bandwidth is 2MHz and is centered at 2MHz. The image rejection ratio ( IRR ) is greater than 34dB around -2MHz and the adjacent channel rejection ( ACR ) around 6MHz is also higher than 34dB while the ripple in the passband is less than ldB. The filter consumes 2.3mA under 1.8V power supply.

部分文件列表

文件名 大小
三阶级联复数有源RC带通滤波器.pdf 2M

全部评论(0)

暂无评论

上传资源 上传优质资源有赏金

  • 打赏
  • 30日榜单

推荐下载