Title :
A CMOS reconfigurable passive mixer with digitally-controllable gain
Author :
Kuan Bao ; Xiangning Fan ; Li Tang ; Zaijun Hua ; Zhigong Wang
Author_Institution :
Inst. of RF-&OE-ICs, Southeast Univ., Nanjing, China
Abstract :
This paper presents a reconfigurable current-commutating passive mixer for multi-standard applications. By having controllable transconductance and transimpedance stages, the gain, noise figure and linearity of the mixer can be reconfigured. Fabricated in 0.18 μm CMOS process, the mixer achieves a voltage-conversion-gain from 4 to 22 dB. The measured maximum IIP3 is 8.5 dBm and the minimum noise figure is 8.0 dB. The current consumption for a single branch (I or Q) ranges from 3.1 to 5.6 mA from a 1.8 V supply voltage. The chip occupies an area of 0.705 mm2 including pads.
Keywords :
CMOS integrated circuits; UHF mixers; field effect MMIC; operational amplifiers; CMOS reconfigurable passive mixer; controllable transconductance stage; controllable transimpedance stage; current 3.1 mA to 5.6 mA; digitally controllable gain; gain 4 dB to 22 dB; multistandard application; noise figure 8.0 dB; reconfigurable current commutating passive mixer; reconfigurable gain; reconfigurable linearity; reconfigurable noise figure; size 0.18 mum; voltage 1.8 V; CMOS integrated circuits; Gain; Mixers; Noise figure; Radio frequency; Transconductance; CMOS; Reconfigurable; current-commutating; mixer; multi-standard; passive; receivers;
Conference_Titel :
Radio-Frequency Integration Technology (RFIT), 2014 IEEE International Symposium on
Conference_Location :
Hefei
DOI :
10.1109/RFIT.2014.6933250
