Title :
A current bleeding mixer based on Gilbert-cell featuring LO amplification
Author :
Xuan, Kai ; Tsang, Kim Fung ; Lee, Shu Chuen ; Lee, Wah Ching
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong, China
Abstract :
A high gain and low noise mixer based on current bleeding topology is implemented. The high performance is attributed to the effect of current injection and local oscillator (LO) amplification. The conversion gain of the mixer is 17.5 dB at -14 dBm LO power and the noise figure is 10.5 dB. The proposed topology dramatically relieves the typically high power requirement of LO. The mixer is implemented by a 0.18-¿m CMOS process. The operating frequency is 2.4 GHz with 10 MHz intermediate frequency. The circuit drains 12 mA current from a 1.5 V supply voltage.
Keywords :
CMOS integrated circuits; mixers (circuits); oscillators; CMOS; Gilbert-cell; current 12 mA; current bleeding mixer; current injection; frequency 10 MHz; frequency 2.4 GHz; gain 17.5 dB; local oscillator amplification; noise figure; noise figure 10.5 dB; size 0.18 mum; voltage 1.5 V; Hemorrhaging;
Conference_Titel :
SOC Conference, 2009. SOCC 2009. IEEE International
Conference_Location :
Belfast
Print_ISBN :
978-1-4244-4940-8
Electronic_ISBN :
978-1-4244-4941-5
DOI :
10.1109/SOCCON.2009.5398076
