Paper Info
Title
A variable gain RF front-end, based on a Voltage-Voltage feedback LNA, for multistandard applications
Abstract
Employing feedback circuits in RF front-ends can be a key aspect for easy reconfiguration of multistandard receivers. A narrow-band filter can shape the frequency transfer function and, by reflection due to the feedback network, the input impedance. Switching one single filter component thus allows selecting a different standard. We introduce a voltage-voltage feedback low noise amplifier that, besides being easily reconfigurable, shows roughly the same noise and better linearity, for same power consumption, as the conventional inductively degenerated topology. A direct conversion front-end, including the LNA and I and Q mixers, tailored to WLAN applications in the 5-6 GHz range, has been realized in a 0.25-μm SiGe BiCMOS process. Prototypes show the following performances: 2.5 dB NF, 31.5 dB gain, -9.5dBm IIP3, and +23dBm minimum IIP2 while consuming 16 mA from a 2.5 V supply.
Year
DOI
Venue
2005
10.1109/JSSC.2005.843631
Solid-State Circuits, IEEE Journal of
Keywords
DocType
Volume
BiCMOS integrated circuits,Ge-Si alloys,IEEE standards,feedback amplifiers,radio receivers,wireless LAN,0.25 micron,2.5 V,2.5 dB,31.5 dB,5 to 6 GHz,BiCMOS process,HiSWANa,HiperLAN2,IEEE 802.11a,Q mixers,RF front-ends,RF receiver,SiGe,WLAN applications,direct conversion,feedback amplifier,feedback circuits,frequency transfer function,low noise amplifier,multistandard receivers,narrow-band filter,power consumption,voltage-voltage feedback,wireless local area network,BiCMOS,HiSWANa,HiperLAN2,IEEE 802.11a,RF receiver,direct conversion,feedback amplifier,low noise amplifier (LNA),mixer,multiband,multistandard,wireless local area network (WLAN)
Journal
40
Issue
ISSN
Citations 
3
0018-9200
26
PageRank 
References 
Authors
3.29
13
4
Name
Order
Citations
PageRank
Rossi, P.1263.29
Liscidini, A.2394.49
Brandolini, M.3263.29
Svelto, F.4263.29