摘要
基于IBM0.18μm标准CMOS工艺,设计了一种适用于UHF RFID(Radio Frequency Identification)阅读器的信道选择滤波器。这种滤波器和其他结构滤波器相比,可以获得更高的线性度和更好的噪声特性。设计中,低通滤波器截止频率0.3~1.3 MHz范围内可调。当截止频率设置为900 kHz时,带内增益稳定在0 dB,在1.8 MHz频率处具有大于49 dB的幅度衰减。
CSF(Channel-Select Filter)for single chip UHF RFID Reader,which is designed in IBM 0.18 μm CMOS technology,is presented.Compared to the other structure filter,this CSF have better line and noise characteristic.The cut-off frequency of CSF can vary in the range of 300 kHz to 1.3 MHz.When the cut-off frequency is 900 MHz,the gain in the-3 dB frequency keeps 0 dB and the attenuation is more than 49 dB at 1.8 MHz.
出处
《电子器件》
CAS
2010年第2期182-185,共4页
Chinese Journal of Electron Devices
基金
上海市科委项目锗硅BiCMOS射频前端关键电路设计技术研究(09700713800)资助