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

Author

Ataei, Milad ; Tamaddon, Mohsen ; Jannesari, Abumoslem

Author_Institution

Electr. & Comput. Eng. Dept., Tarbiat Modares Univ., Tehran, Iran

fYear

2010

fDate

6-9 Dec. 2010

Firstpage

851

Lastpage

854

Abstract

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.

Keywords

CMOS integrated circuits; WiMax; active filters; integrated circuit noise; low-power electronics; 1P6M CMOS technology; WiMAX applications; active-filter applications; continuous-time applications; core transistors; filter core; in-band noise; in-band noise power; input referred noise; integrated low-power applications; low-noise applications; noise shaping topology; power dissipation; size 0.18 mum; CMOS integrated circuits; CMOS technology; Low pass filters; Noise; Noise shaping; Transistors; IF filter; Noise shaping; Sub-threshold transistors; WiMAX;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Conference_Location

Kuala Lumpur

Print_ISBN

978-1-4244-7454-7

Type

conf

DOI

10.1109/APCCAS.2010.5774888

Filename

5774888