Title :
Low noise linear and wideband transconductance amplifier design for current-mode frontend
Author :
Quoc-Tai Duong ; Alvandpour, A.
Author_Institution :
Dept. of Electr. Eng., Linkoping Univ., Linkoping, Sweden
Abstract :
A low-noise transconductance amplifier (LNTA) aimed at current-mode (Saw-less, Software-define radio) wideband receiver frontend is presented. In this application, the LNTA operates with a capacitive load to provide high linearity and sufficient G<;sub>m<;/sub> gain over a wide frequency band. By combination of various circuit techniques the LNTA, which is designed in 65 nm CMOS, achieves in simulation the noise figure in range [1-1.34] dB and linearity of maximum IIP3 = 16.5 dBm over 0.5-6 GHz band. The maximum transconductance G<;sub>m<;/sub> = 12.9 mS, the return loss S11 <; -10 dB while the total power consumption is 4 mW for 1.2 V supply.
Keywords :
CMOS analogue integrated circuits; MMIC amplifiers; UHF integrated circuits; current-mode circuits; integrated circuit design; operational amplifiers; radio receivers; software radio; wideband amplifiers; CMOS design; LNTA; current-mode wideband receiver frontend; frequency 0.5 GHz to 6 GHz; low noise linear wideband transconductance amplifier design; noise figure 1 dB to 1.34 dB; power 4 mW; sawless software-define radio; size 65 nm; voltage 1.2 V; CMOS integrated circuits; Linearity; Noise figure; Receivers; Solid state circuits; Wideband; Low-noise transconductance amplifier (LNTA); Saw-less RF receiver frontend; highly linear LNA; wideband LNA;
Conference_Titel :
Integrated Circuits (ISIC), 2014 14th International Symposium on
Conference_Location :
Singapore
DOI :
10.1109/ISICIR.2014.7029440
