Title :
A Highly Linear Wideband Up-Conversion Differential CMOS Micromixer Using IMD3 Cancellation for a Digital TV Tuner IC
Author :
Lim, Young-Wook ; Nam, Ilku ; Kim, Hong-Teuk ; Lee, Kwyro
Author_Institution :
Syst. IC Bus. Team, LG Electron., Seoul
Abstract :
In this letter, a highly linear wideband up-conversion differential CMOS micromixer with a linearized transconductor employing a third order intermodulation (IMD3) cancellation technique for a digital TV tuner IC is proposed and designed. It is fabricated in a 0.18 mum CMOS process and draws 22 mA from a 1.8 V supply voltage. It shows a voltage gain of more than 6 dB, a noise figure lower than 11.9 dB, an IIP2 of more than 57 dBm, and an IIP3 of more than 18 dBm for the entire input band from 48 to 860 MHz.
Keywords :
CMOS digital integrated circuits; MMIC mixers; digital integrated circuits; intermodulation; bandwidth 48 MHz to 860 MHz; current 22 mA; digital TV tuner IC; highly linear wideband up-conversion differential CMOS micromixer; linearized transconductor; noise figure; third order intermodulation; voltage 1.8 V; voltage gain; CMOS; DTV; IMD3 cancellation; RF; front-end; linear; micromixer; tuner; up-conversion; wideband;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2008.2011320