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A low-power sub-threshold CMOS continuous-time active-filter with reduced in-band noise for WiMAX applications

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3 Author(s)
Milad Ataei ; Electrical and Computer Engineering Department, Tarbiat Modares University, Tehran, Iran ; Mohsen Tamaddon ; Abumoslem Jannesari

This paper presents an integrated low-power, low-noise, continuous-time, active-filter for WiMAX applications. It is based on a noise shaping topology with using all core transistors in sub-threshold region. Using sub-threshold MOS transistors in the filter core gives possibility to stack up four transistors in low supply voltage. The proposed filter has significant reduction of in-band noise power with low power consumption. The designed low-pass (5MHz bandwidth) filter is simulated with Cadence in 0.18um 1P6M CMOS technology. It has out-of-band IIP3 above 13dBm with input referred noise of 14.3uV and the power dissipation of 1.25mW.

Published in:

Circuits and Systems (APCCAS), 2010 IEEE Asia Pacific Conference on

Date of Conference:

6-9 Dec. 2010