A low-power and high-gain mixer design for UWB receiver

This letter presents a low power, low noise CMOS double-balanced direct conversion mixer for ultra-wideband systems. The mixer is a critical block to perform the frequency translation in ultra-wideband systems. The proposed mixer employs three techniques: the sub threshold operation of transistors f...

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Bibliographic Details
Published inProceedings of 2011 International Conference on Electronic & Mechanical Engineering and Information Technology Vol. 6; pp. 2857 - 2860
Main Authors Malekmohammadi, Abolfazl, Zadeh, Hossein Ghayoumi, Nilsaz-Nejad, Ali Shirzad
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2011
Subjects
CMOS integrated circuits
CMOS technology
Gain
High gain
Low-noise amplifiers
Mixers
Noise figure
Radio frequency
Transistors
Ultra low power
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Summary:This letter presents a low power, low noise CMOS double-balanced direct conversion mixer for ultra-wideband systems. The mixer is a critical block to perform the frequency translation in ultra-wideband systems. The proposed mixer employs three techniques: the sub threshold operation of transistors for the radio frequency stage reduces current dissipation in the overall mixer, a local oscillation (LO) stage using an inverter lowers the required LO amplitude, and an active load improves conversion gain. The mixer was implemented using a 0.18 μm CMOS process and was operated from 3.1 to 5.7 GHz. The measured results show a high conversion gain up to 22.0 dB and a maximum noise figure of 8.0 dB. In addition and a power dissipation of 5.535 mW from a 1.8 V supply.
ISBN:9781612840871
1612840876
DOI:10.1109/EMEIT.2011.6023698