A 2.4 GHz low power folded down-conversion quadrature mixer in 0.18-μm CMOS

Author

Shen, Dongjun ; Li, Zhiqun

Author_Institution

Inst. of RF- & OE-ICs, Southeast Univ., Nanjing, China

fYear

2011

fDate

9-11 Nov. 2011

Firstpage

1

Lastpage

4

Abstract

This paper describes a 1.8-V I/Q down mixer operating in 2.4GHz band for the Wireless Sensor Network (WSN) application using TSMC 0.18-μm RF CMOS process. The double-balanced mixer is modified based on the conventional Gilbert cell. It is composed of I/Q shared transconductance stage, folded switching stage, nMOS load stage, and common-mode feedback (CMFB) circuits. The mixer achieves a conversion gain of 13.84 dB with an input 1-dB compression point (IP_1dB) of -3.66 dBm. It also achieves a single side band (SSB) noise figure (NF) of 11.55 dB. The mixer acquires the third order input referred intercept point (IIP3) of 2.16 dBm. It consumes 1.96 mA of current from a 1.8-V power supply.

Keywords

CMOS analogue integrated circuits; UHF mixers; low-power electronics; wireless sensor networks; CMFB circuits; I-Q shared transconductance stage; TSMC RF CMOS process; WSN application; common-mode feedback circuits; conventional Gilbert cell; current 1.96 mA; double-balanced mixer; folded switching stage; frequency 2.4 GHz; gain 13.84 dB; low-power folded-down-conversion quadrature mixer; nMOS load stage; noise figure 11.55 dB; size 0.18 mum; voltage 1.8 V; wireless sensor network; Gain; Linearity; Mixers; Noise measurement; Transconductance; Transistors; Wireless sensor networks; 0.18-μm CMOS; CMFB; WSN application; folded mixer; low power; nMOS load;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Signal Processing (WCSP), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4577-1009-4

Electronic_ISBN

978-1-4577-1008-7

Type

conf

DOI

10.1109/WCSP.2011.6096730

Filename

6096730