A 0.18 μm mixer merged with LNA exploiting noise cancellation

Author

Sun, Jingye ; Huang, Lu ; Liu, Honghong ; Chen, Da-Peng ; Lin, Fujiang

Author_Institution

Dept. 23, Univ. of Sci. & Technol. of China (USTC), Hefei, China

fYear

2011

fDate

Nov. 30 2011-Dec. 2 2011

Firstpage

25

Lastpage

28

Abstract

This paper presents a 0.18 μm mixer merged with LNA exploiting noise cancellation technique. It operates between 100MHz and 1GHz. The Gilbert mixer is known for its perfect port isolation and bad noise performance. The transconductor stage of the mixer can be implemented by an LNA exploiting noise cancellation to have a better NF. The chip is implemented in SMIC 0.18μm CMOS technology. Measurement shows that the proposed mixer merged with LNA has a 13.7~19.5dB voltage gain from 100MHz to 1GHz, noise figure has an average of 5dB and has a minimum value of 3.8dB. The core area is 0.6×0.45mm².

Keywords

CMOS integrated circuits; UHF amplifiers; UHF mixers; VHF amplifiers; interference suppression; low noise amplifiers; Gilbert mixer; LNA; SMIC CMOS technology; bad noise; frequency 100 MHz to 1 GHz; gain 13.7 dB to 19.5 dB; noise cancellation; perfect port isolation; size 0.18 mum; transconductor stage; Impedance matching; Mixers; Noise cancellation; Noise figure; Switches; LNA; low noise figure; merge; mixer; noise cancellation;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio-Frequency Integration Technology (RFIT), 2011 IEEE International Symposium on

Conference_Location

Beijing

Print_ISBN

978-1-4577-0517-5

Type

conf

DOI

10.1109/RFIT.2011.6141765

Filename

6141765