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

Xi Zhu*, James Moritz, Yichuang Sun

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

4 Citations (Scopus)


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 0.18μm CMOS process with 1.5V power supply have shown that the cut-off frequency of the filter ranges from 240MHz to 300MHz and dynamic range is about 58dB at 240MHz of cut-off frequency. The power consumption of the filter is only from 22.3 to 55mW. The total output noise density is about 390nA/√HZ.

Original languageEnglish
Title of host publication25th Norchip Conference, NORCHIP
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (Print)1424415179, 9781424415175
Publication statusPublished - 2007
Externally publishedYes
Event25th Norchip Conference, NORCHIP - Aalborg, Denmark
Duration: 19 Nov 200720 Nov 2007


Other25th Norchip Conference, NORCHIP


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