Design of a fourth-order continuous-time filter for UWB receivers

X. Zhu, J. Moritz, Y. Sun

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)
    63 Downloads (Pure)


    The design and implementation of a CMOS current- mode fourth-order Butterworth continuous-time leap-frog (LF) multiple loop feedback (MLF) lowpass filter is described. The filter is implemented using a fully-differential linear, low voltage and low power operational transconductance amplifier (OTA). PSpice simulations using a standard TSMC 0.18 mum CMOS process with 1.5 V power supply have shown that the cut-off frequency of the filter ranges from 240 MHz to 300 MHz and dynamic range is about 58 dB at 240 MHz of cut-off frequency. The power consumption of the filter is only from 22.3 to 55 mW. The total output noise density is about 390 nA/VHz.
    Original languageEnglish
    Pages (from-to)1-4
    Publication statusPublished - 2007


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