Title :
An Improved Current Bleeding Mixer Based on CMOS Technology
Author :
Cheng, Zhiqun ; Zhou, Pengfei ; Li, Jin ; Zhang, Sheng
Author_Institution :
Key Lab. of RF Circuit & Syst., Hangzhou Dianzi Univ., Hangzhou, China
Abstract :
An improved current bleeding CMOS mixer is designed in this paper. The conversion gain of the mixer is increased and the flicker noise of the mixer is reduced by inserting the inductor to form resonant circuit with parasitic capacitors of the source ports of the switch transistors in Gilbert mixer. The mixer is designed by using SMIC 0.18 um CMOS process. The simulated results show that the mixer proposed has a 1.76 dB increase of conversion gain, 2.1 dBm improvement of IIP3, 0.5 dB decrease of noise figure with local power of -3 dBm as compared with the mixer before inserting the inductor.
Keywords :
CMOS integrated circuits; capacitors; circuit simulation; flicker noise; inductors; integrated circuit design; integrated circuit modelling; integrated circuit noise; mixers (circuits); semiconductor process modelling; transistors; CMOS technology; Gilbert mixer; complementary metal-oxide-semiconductor; conversion gain; current bleeding CMOS mixer; flicker noise; inductor; local power; noise figure; parasitic capacitors; resonant circuit; source ports; switch transistors; 1f noise; CMOS process; CMOS technology; Circuit simulation; Hemorrhaging; Inductors; RLC circuits; Switched capacitor circuits; Switches; Switching circuits; CMOS; Gilbert mixer; current bleeding; flicker noise;
Conference_Titel :
Communications and Mobile Computing (CMC), 2010 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4244-6327-5
Electronic_ISBN :
978-1-4244-6328-2
DOI :
10.1109/CMC.2010.207
