A 3.1∼4.8 GHz wideband mixer for MB-OFDM UWB receivers with improved noise performance

Author

Gao, Yang ; Huang, Fengyi ; Cheng, Jia ; Wu, Lianhong

Author_Institution

RF&OEIC Res. Inst., Southeast Univ., Nanjing, China

fYear

2009

fDate

20-21 Sept. 2009

Firstpage

58

Lastpage

61

Abstract

A CMOS down-conversion mixer for MB-OFDM (Multi-Band Orthogonal Frequency Division Multiplexing) UWB (Ultra-Wide Band) application is presented. The mixer is implemented with a double-balanced Gilbert-cell architecture and adopts dynamic current source to improve noise performance. Two inductors are also introduced to reduce the flicker noise. Designed in SMIC 0.18 Â¿m CMOS process, simulation results show a conversion gain of 9 to 11.5 dB, a noise figure of 10.8 to 13.2 dB, and an input-referred third-order intercept point of -10.5 to -8.2 dBm. The power consumption of the mixer core is 11.3 mW.

Keywords

CMOS integrated circuits; MMIC mixers; OFDM modulation; field effect MMIC; flicker noise; integrated circuit noise; radio receivers; ultra wideband communication; MB-OFDM UWB receivers; SMIC CMOS process; double-balanced Gilbert-cell architecture; dynamic current source; flicker noise; frequency 3.1 GHz to 4.8 GHz; gain 9 dB to 11.5 dB; improved noise performance; inductors; multiband orthogonal frequency division multiplexing; noise figure 10.8 dB to 13.2 dB; power 11.3 mW; power consumption; size 0.18 mum; third-order intercept point; wideband mixer; Energy consumption; Linearity; Mixers; Noise figure; OFDM; Parasitic capacitance; Radio frequency; Switches; Transconductance; Ultra wideband technology; CMOS; Gilbert Mixer; UWB; low noise; wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Computing and Telecommunication, 2009. YC-ICT '09. IEEE Youth Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-5074-9

Electronic_ISBN

978-1-4244-5076-3

Type

conf

DOI

10.1109/YCICT.2009.5382433

Filename

5382433