Title :
A DC-to-22 GHz 8.4mW compact dual-feedback wideband LNA in 90 nm digital CMOS
Author :
Okushima, M. ; Borremans, J. ; Linten, D. ; Groeseneken, G.
Author_Institution :
IMEC, Leuven, Belgium
Abstract :
A dual-feedback topology to extend bandwidth of resistive feedback LNAs is proposed in this paper. Active source follower shunt-shunt feedback using a shunt peaking inductor to extend the 3-dB and input matching bandwidth is employed, combined with series-shunt feedback for extended impedance matching using a source inductor. A prototype in 90 nm digital CMOS achieves a high 3-dB bandwidth of 29 GHz while preserving adequate input matching up to 22 GHz. The miniature area (0.017 mm2) and low power consumption (8.4 mW) make the solution very attractive for low-cost very wideband LNA implementation.
Keywords :
CMOS digital integrated circuits; MMIC amplifiers; feedback amplifiers; field effect MMIC; impedance matching; low noise amplifiers; low-power electronics; nanoelectronics; wideband amplifiers; active source follower; bandwidth 29 GHz; compact resistive dual-feedback wideband LNA; digital CMOS; dual-feedback topology; impedance matching; power 8.4 mW; power consumption; series-shunt feedback; shunt peaking inductor; shunt-shunt feedback; size 90 nm; source inductor; Active inductors; Bandwidth; Circuit topology; Impedance matching; Output feedback; Parasitic capacitance; Prototypes; Radio frequency; Shunt (electrical); Wideband; CMOS; low-noise-amplifier (LNA); multiband receiver; resistive feedback; ultra-wideband (UWB);
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2009. RFIC 2009. IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-3377-3
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2009.5135543
