Title :
2.4 GHz offset-cancelling down-conversion mixer
Author :
Chih-Chun Tang ; Kun-Hsien Li ; Shen-Luan Liu
Author_Institution :
Electron. Circuits Lab., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
4/25/2002 12:00:00 AM
Abstract :
A down-conversion mixer utilising the offset-cancelling technique increase the carrier-to-noise ratio (CNR) is presented. The proposed offset-cancelling mixer has been fabricated in a 0.35 /spl mu/m CMOS process and it can convert the 2.4 GHz RF signal to the 280 MHz IF one with 12 mW power consumption including the buffer. Compared with the non-offset-cancelling mixer, the proposed offset-cancelling mixer has the lower noise level. Experimental results show that the offset-cancelling mixer provides 45 dB CNR better than 34 dB CNR of the mixer without the offset-cancelling technique.
Keywords :
CMOS analogue integrated circuits; UHF frequency convertors; UHF integrated circuits; UHF mixers; integrated circuit noise; low-power electronics; transceivers; 0.35 micron; 12 mW; 2.4 GHz; 280 MHz; CMOS process; RF wireless transceivers; carrier-to-noise ratio; noise level; offset-cancelling down-conversion mixer; power consumption;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020286
