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A Low-Power and High-Gain Mixer for UWB Systems

Author:
Seo, Jeong-Bae  Kim, Jong-Ha  Sun, Hyuk  Yun, Tae-Yeoul  


Journal:
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS


Issue Date:
2008


Abstract(summary):

This letter presents a CMOS double-balanced direct-conversion mixer for ultra-wideband systems. The proposed mixer employs three techniques: the subthreshold 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 0.13 mu m 1P8M CMOS process and was operated from 3.1 to 10.6 GHz. The measured results show a high conversion gain of 14.0 dB and a noise figure of 14.5 dB. In addition, the mixer performs with an input IP(3) of -11 dBm and a power dissipation of 1.85 mW from a 1.2 V supply.


Page:
803---805


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