Title :
A 750 MHz to 3 GHz tunable narrowband low-noise amplifier
Author :
Andersson, Stefan ; Svensson, Christer
Author_Institution :
Dept. of E.E., Linkoping Univ., Sweden
Abstract :
An active recursive filter approach is proposed for the implementation of an inductorless, tunable LNA in CMOS. A test circuit was designed and manufactured in a 0.18 μm CMOS technology. The feasibility of this type of LNA was demonstrated in both simulations and measurements and reasonably good performance was obtained. The measurements show a center frequency tuning range from 0.75-3 GHz and a minimum noise figure of 4.8 dB. Gain and Q value are also tunable in a wide range. Measured IIP-3 and 1-dB compression point is -24 dBm and -29.5 dBm respectively, measured at the center frequency 1.7 GHz and with 21 dB gain.
Keywords :
CMOS integrated circuits; UHF amplifiers; active filters; circuit tuning; integrated circuit design; low noise amplifiers; recursive filters; 0.18 micron; 0.75 to 3 GHz; 21 dB; 4.8 dB; CMOS technology; active recursive filter; inductorless low-noise amplifier; tunable narrowband low-noise amplifier; Active filters; CMOS technology; Circuit simulation; Circuit testing; Frequency measurement; Gain measurement; Low-noise amplifiers; Manufacturing; Narrowband; Tunable circuits and devices;
Conference_Titel :
NORCHIP Conference, 2005. 23rd
Print_ISBN :
1-4244-0064-3
DOI :
10.1109/NORCHP.2005.1596976
