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

作者：Seo Jeong Bae^*; Kim Jong Ha; Sun Hyuk; Yun Tae Yeoul

来源：IEEE Microwave and Wireless Components Letters, 2008, 18(12): 803-805.

DOI：10.1109/LMWC.2008.2007707

• CMOS
• high gain
• low power
• mixer
• subthreshold
• ultra-wideband (UWB)

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.

• 出版日期2008-12