Title :
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
fDate :
Nov. 30 2011-Dec. 2 2011
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;
Conference_Titel :
Radio-Frequency Integration Technology (RFIT), 2011 IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-0517-5
DOI :
10.1109/RFIT.2011.6141765
