A high linearity up-conversion mixer with IMD3 cancellation and gm3-boosting for 802.11a application

Author

Wu, Chang-Hsi ; Chen, Wei-Chen ; Liu, Kuan-Lin

Author_Institution

Dept. of Electron. Eng., Lunghwa Univ. of Sci. & Technol., Taoyuan, Taiwan

Volume

2

fYear

2012

fDate

5-8 May 2012

Firstpage

1

Lastpage

4

Abstract

A high linearity up-conversion mixer using TSMC 0.18μm CMOS technology for IEEE 802.11a application is proposed in this paper. The g_m-boosting and derivative superposition(DS) techniques are employed to improve conversion gain and linearity of the designed mixer, respectively. The DS method adds the auxiliary transistors to cancel the third-order derivatives ((g_m)₃) of drain currents from the main transistors. Measurement results of the proposed up-conversion mixer exhibits the conversion gain of 6.5dB and IIP₃ of 0.2dBm while consuming 6.25mW from a 1.5V supply voltage. The chip size including pads is 1.15×1.1mm².

Keywords

CMOS integrated circuits; interference suppression; intermodulation distortion; mixers (circuits); wireless LAN; 802.11a; CMOS technology; IMD3 cancellation; derivative superposition techniques; gain 6.5 dB; gm3-boosting; high linearity up-conversion mixer; power 6.25 mW; size 0.18 mum; third-order derivatives; voltage 1.5 V; CMOS integrated circuits; CMOS technology; Linearity; Mixers; Radio frequency; Transconductance; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on

Conference_Location

Shenzhen

Print_ISBN

978-1-4673-2184-6

Type

conf

DOI

10.1109/ICMMT.2012.6230012

Filename

6230012