带有DCOC的超低功耗可调谐低通滤波器

发布时间：2018-07-07 17:18

本文选题：有源RC低通滤波器 + 超低功耗　；参考：《微电子学》2017年02期

【摘要】：应用于零中频接收机,设计了一种具有4阶跳蛙结构且能有效消除直流失调的有源RC低通滤波器。该滤波器的4个可调带宽分别是180,360,720,1 400kHz,通带增益范围为0~72dB,能够实现多模移动通信的信道选择以及抵抗邻频干扰;在带宽为180kHz时,功耗仅为350μW;当增益为0dB时,该电路的直流失调抑制值为-128dB,IIP3可达30dBm,实现了信号的线性传输。该电路采用TSMC 0.18μm CMOS工艺实现。
[Abstract]:An active RC low-pass filter with 4-order frog structure which can effectively eliminate DC offset is designed for zero-intermediate frequency receiver. The four tunable bandwidths of the filter are 180 / 360,72020 / 1 400kHz, respectively, and the passband gain range is 0 / 72dB, which can realize channel selection and resist adjacent interference in multimode mobile communication, and the power consumption is only 350 渭 W when the bandwidth is 180kHz, and when the gain is 0 dB, the bandwidth is only 350 渭 W when the bandwidth is 180 kHz, and the gain is 0 dB. The DC offset suppression value of the circuit is -128dBnIIP3 up to 30dBm. the linear transmission of the signal is realized. The circuit is implemented in TSMC 0.18 渭 m CMOS process.
【作者单位】：中国科学院微电子研究所;新一代通信射频芯片技术北京市重点实验室;
【分类号】：TN713.4

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