Title :
A Low-Power and High-Gain Mixer for UWB Systems
Author :
Seo, Jeong-Bae ; Kim, Jong-Ha ; Sun, Hyuk ; Yun, Tae-Yeoul
Author_Institution :
Div. of Electr. & Comput. Eng., Hanyang Univ., Seoul
Abstract :
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 mum 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.
Keywords :
CMOS integrated circuits; low-power electronics; microwave integrated circuits; microwave mixers; ultra wideband technology; 1P8M CMOS process; CMOS double-balanced direct-conversion mixer; UWB system; current dissipation; frequency 3.1 GHz to 10.6 GHz; gain 14 dB; high-gain mixer; local oscillation stage; low-power system; noise figure 14.5 dB; size 0.13 mum; ultra-wideband system; voltage 1.2 V; CMOS technology; Energy consumption; Information technology; Inverters; Mixers; Narrowband; Radio frequency; Switches; Ultra wideband technology; Voltage; CMOS; high gain; low power; mixer; subthreshold; ultra-wideband (UWB);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2008.2007707
