CMOS mixer design with micromachined input matching circuits for wireless applications

Author

Wu, Chun-li ; Zaghloul, Mona E. ; Zhang, Shumin

Author_Institution

Dept. of Electr. & Comput. Eng., George Washington Univ., DC

fYear

2006

fDate

21-24 May 2006

Lastpage

4982

Abstract

This paper demonstrates a new high quality and low cost double-balanced Gilbert mixer using CMOS-based MEMS technology. MEMS integrating matching circuits improve the performance of the mixer. The simulation shows 30% improved of inductor series resistance (from 15.828 ohms to 10.224 ohms @ 1GHz) with MEMS technology. An EM inductors model simulation is established. Both square and octagonal inductors with and without micromachined process are simulated and compared. Simulation result shows the mixer with octagonal inductor and micromachined process improved, in dB, a 25.4% in insertion loss, an 11.8% increase in conversion gain, a 42.45% in third intercept point (IIP3) and an 11.96% improvement in noise figure (NF)

Keywords

CMOS integrated circuits; inductors; integrated circuit design; micromechanical devices; mixers (circuits); 1 GHz; 10.224 to 15.828 ohm; CMOS mixer design; CMOS-based MEMS; EM inductors model simulation; MEMS integrating matching circuits; double-balanced Gilbert mixer; inductor series resistance; micromachined input matching circuits; octagonal inductors; square inductors; wireless applications; CMOS process; CMOS technology; Costs; Impedance matching; Inductors; Integrated circuit technology; Micromechanical devices; Microwave technology; Mixers; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Conference_Location

Island of Kos

Print_ISBN

0-7803-9389-9

Type

conf

DOI

10.1109/ISCAS.2006.1693749

Filename

1693749