Title :
High-performance current bleeding CMOS mixer
Author :
Xuan, K. ; Tsang, K.F. ; Lee, S.C. ; Lee, W.C.
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China
Abstract :
A high-performance mixer, known as the amplifier-driven double-balanced Gilbert-cell mixer, is proposed and implemented in 0.18 mum RFCMOS technology. A class-A amplifier-based current bleeding source is used to amplify the local oscillator signal and improve transconductance of the transconductor stage. The conversion gain is measured to be 17.5 dB when the LO power is 14 dBm only. The measured noise figure is better than 12.5 dB. The chip area is 1.2 1.3 mm and the power consumption is 12 mA at 1.5 V supply voltage.
Keywords :
CMOS integrated circuits; mixers (circuits); radiofrequency amplifiers; radiofrequency integrated circuits; RFCMOS technology; amplifier-driven double-balanced Gilbert-cell mixer; class-A amplifier-based current bleeding source; current 12 mA; gain 17.5 dB; high-performance mixer; local oscillator signal; noise figure 12.5 dB; power consumption; size 0.18 mum; voltage 1.5 mV;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.1724
