Title
Bipolar LNA design at different operating frequencies
Abstract
The bipolar LNA design has been investigated at different operating frequencies. An innovative input matching network, which keeps the noise figure to a minimum, is presented and tested in a 900-MHz LNA. Compared to the state-of-the-art solution, the proposed approach does not impose any constraints on the bias current and/or the emitter area. Indeed, the current can be set to meet gain, linearity or power consumption requirements. In addition, the noise and the input impedance self-matching trend of a bipolar cascode topology at higher operating frequencies has been analytically studied and demonstrated by means of a 12-GHz LNA. The 900-MHz LNA exhibits a power gain of 16 dB and a noise figure of 0.8 dB by adding only one external inductor. The 12-GHz fully integrated input and output matched LNA shows a power gain of 9 dB and a noise figure of 4.7 dB. Bias currents are 2 mA and 4 mA, respectively, for the 900-MHz and the 12-GHz LNAs.
Year
DOI
Venue
2003
10.1109/ISCAS.2003.1205538
ISCAS (1)
Keywords
Field
DocType
2 ma,4.7 db,power consumption,cascode topology,linearity,bipolar analogue integrated circuits,noise figure,impedance matching network,radiofrequency integrated circuits,12 ghz,bipolar lna design,4 ma,integrated circuit noise,power gain,input impedance self-matching,0.8 db,radiofrequency amplifiers,9 db,16 db,900 mhz,impedance matching,inductors,topology,frequency,testing,gain
Power gain,Low-noise amplifier,Control theory,Computer science,Noise figure,Impedance matching,Inductor,Noise temperature,Electronic engineering,Effective input noise temperature,Input impedance,Electrical engineering
Conference
Volume
ISBN
Citations 
1
0-7803-7761-3
0
PageRank 
References 
Authors
0.34
1
4
Name
Order
Citations
PageRank
G. Girlando171.86
Egidio Ragonese24712.65
Alessandro Italiano300.34
Giovanni Palmisano43311.73