Title :
CMOS mixer linearization by the low-frequency signal injection method
Author :
Au-Yeung, C.F. ; Cheng, K.K.M.
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, China
Abstract :
This paper presents, for the first time, the application of low-frequency signal injection technique to the linearization of a doubly balanced dual gate mixer. The down-conversion mixer is fabricated using 0.35 /spl mu/m CMOS technology and is designed to operate at 900 MHz RF input frequency with good port-to-port isolation, low LO power and current consumption. Reduction of third-order intermodulation distortion (IMD) level of almost 20 dB is achieved by the proposed scheme.
Keywords :
CMOS integrated circuits; UHF integrated circuits; UHF mixers; intermodulation distortion; linearisation techniques; 0.35 micron; 900 MHz; CMOS RF down-conversion mixer; doubly balanced dual gate mixer; linearization; low-frequency signal injection; third-order intermodulation distortion; CMOS technology; Equations; FETs; Isolation technology; Linearity; Radio frequency; Switches; Transceivers; Transconductance; Voltage;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1210891
