Title :
A low-power and high-gain mixer design for UWB receiver
Author :
Malekmohammadi, Amin ; Zadeh, H.G. ; Nilsaz-Nejad, Ali Shirzad
Author_Institution :
Sci. Assoc. of Electr. & Electron. Eng., Azad Univ. Central Tehran Branch, Tehran, Iran
Abstract :
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.
Keywords :
CMOS integrated circuits; integrated circuit design; low-power electronics; mixers (circuits); radio receivers; ultra wideband communication; UWB receiver; double balanced direct conversion mixer; frequency 3.1 GHz to 5.7 GHz; frequency translation; high gain mixer design; local oscillation stage; low noise CMOS; low power CMOS; low power mixer design; power 5.535 mW; power dissipation; voltage 1.8 V; CMOS integrated circuits; CMOS technology; Gain; Mixers; Noise figure; Radio frequency; Transistors; CMOS integrated circuits; High gain; Low-noise amplifiers; Mixers; Ultra low power;
Conference_Titel :
Electronic and Mechanical Engineering and Information Technology (EMEIT), 2011 International Conference on
Conference_Location :
Harbin, Heilongjiang, China
Print_ISBN :
978-1-61284-087-1
DOI :
10.1109/EMEIT.2011.6023698
