Title :
Design and linearity analysis of current bleeding CMOS mixer for GPS application
Author :
Li, Jin ; Cheng, Zhiqu ; Fu, Kaihong ; Zhou, Xiaopeng ; Zhou, Yunfang
Author_Institution :
Key Lab. of RF Circuit & Syst., Hangzhou Dianzi Univ., Hangzhou
Abstract :
This paper describes 3.3 V silicon down conversion mixer with a current bleeding Gilbert multiplier and also compares the conventional current bleeding Gilbert mixer with an improved current bleeding circuit, detail analysis are given about the two circuits, using 0.35 um process. With a 1.675 GHz local oscillator (LO) and a 1.575 GHz RF input. The results show that the gain and IIP2 of the improved mixer is higher than conventional Gilbert-type mixer, while the noise figure is better.
Keywords :
CMOS integrated circuits; Global Positioning System; UHF mixers; UHF oscillators; elemental semiconductors; multiplying circuits; silicon; CMOS mixers; GPS application; Global Positioning System; Si; conventional current bleeding Gilbert mixer; current bleeding CMOS mixer; current bleeding Gilbert multiplier; frequency 1.575 GHz; frequency 1.675 GHz; linearity analysis; local oscillator; noise figure; second-order input intercept point; silicon down conversion mixer; size 0.35 mum; voltage 3.3 V; Circuit noise; Global Positioning System; Hemorrhaging; Linearity; Low voltage; Noise figure; Radio frequency; Switching circuits; Transceivers; Transconductance; CMOS mixers; Gilbert cell; current bleeding; second-order input intercept point (IIP2); third-order input intercept point(IIP3);
Conference_Titel :
Communication Technology, 2008. ICCT 2008. 11th IEEE International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-2250-0
Electronic_ISBN :
978-1-4244-2251-7
DOI :
10.1109/ICCT.2008.4716261
