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

Zhu, X., Moritz, J. and Sun, Y. (2007) Design of a fourth-order continuous-time filter for UWB receivers. Norchip, 2007. pp. 1-4.

Copy

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.

Item Type	Article
Identification Number	10.1109/NORCHP.2007.4481072
Additional information	“This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder." “Copyright IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.”
Date Deposited	15 May 2025 11:41
Last Modified	08 Apr 2026 19:51