Title :
A highly-linear ultra-wideband balun-LNA for cognitive radios
Author :
Cheng, Weng-Fai ; Un, Ka-Fai ; Mak, Pui-In ; Martins, R.P.
Author_Institution :
State-Key Lab. of Analog & Mixed-Signal VLSI, Univ. of Macau, Macao, China
Abstract :
This paper presents an highly-linear ultrawideband balun low-noise amplifier (LNA) for cognitive radios covering the 50MHz to 10GHz band. It exploits a three-stage dc-coupled common-source amplifier, with RC degeneration at the last stage to optimize the gain, linearity and output gain-phase balancing. Designed in 65nm CMOS, throughout the covered band the simulated voltage gain is ~24dB whereas the noise figure is <;3.6dB. Due to the RC degeneration IIP2 and IIP3 reach 32.4dBm and -2dBm, respectively. The power consumption is 21.7mW at 1.2V.
Keywords :
CMOS analogue integrated circuits; baluns; cognitive radio; low noise amplifiers; ultra wideband communication; CMOS; LNA; RC degeneration; cognitive radio; dc-coupled common-source amplifier; frequency 50 MHz to 10 GHz; gain-phase balancing; highly-linear ultra-wideband balun; low-noise amplifier; noise figure; power 21.7 mW; size 65 nm; voltage 1.2 V; voltage gain; CMOS integrated circuits; Gain; Impedance matching; Linearity; Noise; Noise measurement; Radio frequency;
Conference_Titel :
EUROCON - International Conference on Computer as a Tool (EUROCON), 2011 IEEE
Conference_Location :
Lisbon
Print_ISBN :
978-1-4244-7486-8
DOI :
10.1109/EUROCON.2011.5929406
